./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/gj2007.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/loop-lit/gj2007.i -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 e210f4af0021f1e0c887bbfa24b18aad98424108efaad4cfc57802fd9fd5ce53 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 10:09:22,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 10:09:22,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 10:09:22,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 10:09:22,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 10:09:22,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 10:09:22,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 10:09:22,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 10:09:22,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 10:09:22,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 10:09:22,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 10:09:22,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 10:09:22,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 10:09:22,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 10:09:22,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 10:09:22,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 10:09:22,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 10:09:22,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 10:09:22,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 10:09:22,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 10:09:22,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 10:09:22,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 10:09:22,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 10:09:22,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 10:09:22,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 10:09:22,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 10:09:22,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 10:09:22,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 10:09:22,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 10:09:22,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 10:09:22,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 10:09:22,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 10:09:22,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 10:09:22,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 10:09:22,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 10:09:22,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 10:09:22,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 10:09:22,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 10:09:22,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 10:09:22,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 10:09:22,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 10:09:22,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 10:09:22,978 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 10:09:22,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 10:09:22,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 10:09:22,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 10:09:22,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 10:09:22,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 10:09:22,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 10:09:22,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 10:09:22,981 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 10:09:22,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 10:09:22,982 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 10:09:22,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 10:09:22,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 10:09:22,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 10:09:22,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 10:09:22,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 10:09:22,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 10:09:22,983 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 10:09:22,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 10:09:22,984 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 10:09:22,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 10:09:22,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 10:09:22,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 10:09:22,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 10:09:22,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 10:09:22,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 10:09:22,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 10:09:22,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 10:09:22,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 10:09:22,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 10:09:22,986 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 10:09:22,986 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 10:09:22,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 10:09:22,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 10:09:22,987 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e210f4af0021f1e0c887bbfa24b18aad98424108efaad4cfc57802fd9fd5ce53 [2021-12-17 10:09:23,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 10:09:23,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 10:09:23,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 10:09:23,239 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 10:09:23,239 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 10:09:23,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gj2007.i [2021-12-17 10:09:23,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c87d1f4/2b274bd2733c4c868a672684a06313bf/FLAG39b3ea4a8 [2021-12-17 10:09:23,656 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 10:09:23,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gj2007.i [2021-12-17 10:09:23,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c87d1f4/2b274bd2733c4c868a672684a06313bf/FLAG39b3ea4a8 [2021-12-17 10:09:24,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c87d1f4/2b274bd2733c4c868a672684a06313bf [2021-12-17 10:09:24,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 10:09:24,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 10:09:24,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 10:09:24,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 10:09:24,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 10:09:24,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:09:24" (1/1) ... [2021-12-17 10:09:24,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29385ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:09:24, skipping insertion in model container [2021-12-17 10:09:24,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:09:24" (1/1) ... [2021-12-17 10:09:24,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 10:09:24,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 10:09:24,269 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gj2007.i[895,908] [2021-12-17 10:09:24,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 10:09:24,290 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 10:09:24,302 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gj2007.i[895,908] [2021-12-17 10:09:24,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 10:09:24,317 INFO L208 MainTranslator]: Completed translation [2021-12-17 10:09:24,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:09:24 WrapperNode [2021-12-17 10:09:24,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 10:09:24,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 10:09:24,319 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 10:09:24,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 10:09:24,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:09:24" (1/1) ... [2021-12-17 10:09:24,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:09:24" (1/1) ... [2021-12-17 10:09:24,342 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2021-12-17 10:09:24,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 10:09:24,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 10:09:24,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 10:09:24,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 10:09:24,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:09:24" (1/1) ... [2021-12-17 10:09:24,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:09:24" (1/1) ... [2021-12-17 10:09:24,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:09:24" (1/1) ... [2021-12-17 10:09:24,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:09:24" (1/1) ... [2021-12-17 10:09:24,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:09:24" (1/1) ... [2021-12-17 10:09:24,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:09:24" (1/1) ... [2021-12-17 10:09:24,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:09:24" (1/1) ... [2021-12-17 10:09:24,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 10:09:24,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 10:09:24,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 10:09:24,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 10:09:24,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:09:24" (1/1) ... [2021-12-17 10:09:24,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 10:09:24,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 10:09:24,400 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) [2021-12-17 10:09:24,407 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 [2021-12-17 10:09:24,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 10:09:24,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 10:09:24,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 10:09:24,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 10:09:24,480 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 10:09:24,482 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 10:09:24,582 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 10:09:24,586 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 10:09:24,587 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 10:09:24,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:09:24 BoogieIcfgContainer [2021-12-17 10:09:24,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 10:09:24,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 10:09:24,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 10:09:24,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 10:09:24,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:09:24" (1/3) ... [2021-12-17 10:09:24,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b1fb58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:09:24, skipping insertion in model container [2021-12-17 10:09:24,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:09:24" (2/3) ... [2021-12-17 10:09:24,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b1fb58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:09:24, skipping insertion in model container [2021-12-17 10:09:24,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:09:24" (3/3) ... [2021-12-17 10:09:24,606 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.i [2021-12-17 10:09:24,610 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 10:09:24,610 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 10:09:24,657 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 10:09:24,664 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 10:09:24,664 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 10:09:24,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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) [2021-12-17 10:09:24,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-17 10:09:24,683 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:09:24,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-17 10:09:24,685 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:09:24,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:09:24,689 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2021-12-17 10:09:24,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 10:09:24,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434083812] [2021-12-17 10:09:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:09:24,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 10:09:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:09:24,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 10:09:24,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 10:09:24,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434083812] [2021-12-17 10:09:24,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434083812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 10:09:24,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 10:09:24,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 10:09:24,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579563968] [2021-12-17 10:09:24,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 10:09:24,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 10:09:24,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 10:09:24,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 10:09:24,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 10:09:24,846 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-12-17 10:09:24,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:09:24,859 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-12-17 10:09:24,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 10:09:24,861 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-12-17 10:09:24,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:09:24,867 INFO L225 Difference]: With dead ends: 20 [2021-12-17 10:09:24,871 INFO L226 Difference]: Without dead ends: 8 [2021-12-17 10:09:24,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 10:09:24,877 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 10:09:24,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 10:09:24,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-12-17 10:09:24,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-12-17 10:09:24,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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) [2021-12-17 10:09:24,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-12-17 10:09:24,906 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2021-12-17 10:09:24,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:09:24,906 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-12-17 10:09:24,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-12-17 10:09:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-12-17 10:09:24,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-17 10:09:24,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:09:24,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-17 10:09:24,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 10:09:24,908 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:09:24,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:09:24,910 INFO L85 PathProgramCache]: Analyzing trace with hash 889639793, now seen corresponding path program 1 times [2021-12-17 10:09:24,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 10:09:24,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999609914] [2021-12-17 10:09:24,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:09:24,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 10:09:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:09:24,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 10:09:24,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 10:09:24,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999609914] [2021-12-17 10:09:24,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999609914] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 10:09:24,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 10:09:24,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 10:09:24,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050500033] [2021-12-17 10:09:24,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 10:09:24,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 10:09:24,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 10:09:24,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 10:09:24,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 10:09:24,979 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-17 10:09:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:09:24,991 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2021-12-17 10:09:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 10:09:24,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-12-17 10:09:24,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:09:24,992 INFO L225 Difference]: With dead ends: 16 [2021-12-17 10:09:24,993 INFO L226 Difference]: Without dead ends: 10 [2021-12-17 10:09:24,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 10:09:24,994 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 10:09:24,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 10:09:24,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-12-17 10:09:24,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-12-17 10:09:24,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2021-12-17 10:09:24,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-12-17 10:09:24,998 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2021-12-17 10:09:24,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:09:24,998 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-12-17 10:09:24,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-17 10:09:24,999 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-12-17 10:09:24,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-17 10:09:24,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:09:25,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 10:09:25,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 10:09:25,000 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:09:25,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:09:25,001 INFO L85 PathProgramCache]: Analyzing trace with hash 295691924, now seen corresponding path program 1 times [2021-12-17 10:09:25,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 10:09:25,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978268909] [2021-12-17 10:09:25,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:09:25,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 10:09:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:09:25,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 10:09:25,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 10:09:25,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978268909] [2021-12-17 10:09:25,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978268909] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 10:09:25,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483854279] [2021-12-17 10:09:25,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:09:25,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 10:09:25,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 10:09:25,037 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) [2021-12-17 10:09:25,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 10:09:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:09:25,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 10:09:25,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 10:09:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 10:09:25,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 10:09:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 10:09:25,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483854279] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 10:09:25,176 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 10:09:25,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-17 10:09:25,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088220774] [2021-12-17 10:09:25,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 10:09:25,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 10:09:25,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 10:09:25,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 10:09:25,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-17 10:09:25,181 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2021-12-17 10:09:25,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:09:25,219 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2021-12-17 10:09:25,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 10:09:25,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 8 [2021-12-17 10:09:25,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:09:25,221 INFO L225 Difference]: With dead ends: 21 [2021-12-17 10:09:25,222 INFO L226 Difference]: Without dead ends: 15 [2021-12-17 10:09:25,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-17 10:09:25,224 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 10:09:25,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 10:09:25,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-12-17 10:09:25,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-12-17 10:09:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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) [2021-12-17 10:09:25,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-12-17 10:09:25,233 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2021-12-17 10:09:25,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:09:25,233 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-12-17 10:09:25,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2021-12-17 10:09:25,234 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-12-17 10:09:25,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-17 10:09:25,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:09:25,235 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-17 10:09:25,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 10:09:25,459 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 [2021-12-17 10:09:25,460 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:09:25,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:09:25,461 INFO L85 PathProgramCache]: Analyzing trace with hash 598153473, now seen corresponding path program 1 times [2021-12-17 10:09:25,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 10:09:25,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624463926] [2021-12-17 10:09:25,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:09:25,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 10:09:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:09:25,524 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 10:09:25,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 10:09:25,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624463926] [2021-12-17 10:09:25,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624463926] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 10:09:25,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972153672] [2021-12-17 10:09:25,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:09:25,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 10:09:25,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 10:09:25,528 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) [2021-12-17 10:09:25,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 10:09:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:09:25,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 10:09:25,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 10:09:25,607 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 10:09:25,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 10:09:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 10:09:25,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972153672] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 10:09:25,653 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 10:09:25,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-17 10:09:25,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409787060] [2021-12-17 10:09:25,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 10:09:25,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 10:09:25,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 10:09:25,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 10:09:25,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-12-17 10:09:25,655 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2021-12-17 10:09:25,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:09:25,683 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2021-12-17 10:09:25,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 10:09:25,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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 14 [2021-12-17 10:09:25,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:09:25,684 INFO L225 Difference]: With dead ends: 32 [2021-12-17 10:09:25,684 INFO L226 Difference]: Without dead ends: 23 [2021-12-17 10:09:25,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-12-17 10:09:25,685 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 10:09:25,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 10:09:25,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-17 10:09:25,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-12-17 10:09:25,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 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) [2021-12-17 10:09:25,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-12-17 10:09:25,690 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2021-12-17 10:09:25,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:09:25,690 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-12-17 10:09:25,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2021-12-17 10:09:25,691 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-12-17 10:09:25,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-17 10:09:25,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:09:25,692 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1] [2021-12-17 10:09:25,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 10:09:25,913 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,SelfDestructingSolverStorable3 [2021-12-17 10:09:25,913 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:09:25,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:09:25,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1175196403, now seen corresponding path program 2 times [2021-12-17 10:09:25,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 10:09:25,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516842216] [2021-12-17 10:09:25,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:09:25,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 10:09:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:09:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 10:09:26,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 10:09:26,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516842216] [2021-12-17 10:09:26,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516842216] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 10:09:26,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946946019] [2021-12-17 10:09:26,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 10:09:26,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 10:09:26,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 10:09:26,007 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) [2021-12-17 10:09:26,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 10:09:26,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 10:09:26,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 10:09:26,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 10:09:26,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 10:09:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 10:09:26,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 10:09:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 10:09:26,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946946019] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 10:09:26,240 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 10:09:26,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2021-12-17 10:09:26,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572157362] [2021-12-17 10:09:26,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 10:09:26,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-17 10:09:26,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 10:09:26,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-17 10:09:26,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-12-17 10:09:26,243 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 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) [2021-12-17 10:09:26,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:09:26,287 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2021-12-17 10:09:26,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 10:09:26,287 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 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 22 [2021-12-17 10:09:26,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:09:26,288 INFO L225 Difference]: With dead ends: 48 [2021-12-17 10:09:26,288 INFO L226 Difference]: Without dead ends: 39 [2021-12-17 10:09:26,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-12-17 10:09:26,290 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 10:09:26,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 10:09:26,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-17 10:09:26,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-12-17 10:09:26,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 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) [2021-12-17 10:09:26,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-12-17 10:09:26,299 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 22 [2021-12-17 10:09:26,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:09:26,299 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-12-17 10:09:26,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 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) [2021-12-17 10:09:26,299 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-12-17 10:09:26,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-17 10:09:26,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:09:26,300 INFO L514 BasicCegarLoop]: trace histogram [16, 14, 2, 1, 1, 1, 1, 1, 1] [2021-12-17 10:09:26,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-17 10:09:26,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 10:09:26,514 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:09:26,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:09:26,515 INFO L85 PathProgramCache]: Analyzing trace with hash -713215707, now seen corresponding path program 3 times [2021-12-17 10:09:26,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 10:09:26,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4232108] [2021-12-17 10:09:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:09:26,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 10:09:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:09:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 45 proven. 210 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 10:09:26,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 10:09:26,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4232108] [2021-12-17 10:09:26,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4232108] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 10:09:26,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377816021] [2021-12-17 10:09:26,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-17 10:09:26,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 10:09:26,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 10:09:26,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 10:09:26,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 10:09:26,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-17 10:09:26,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 10:09:26,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-17 10:09:26,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 10:09:26,890 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-17 10:09:26,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 10:09:27,001 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-17 10:09:27,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377816021] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 10:09:27,002 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 10:09:27,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 23 [2021-12-17 10:09:27,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346283579] [2021-12-17 10:09:27,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 10:09:27,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-17 10:09:27,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 10:09:27,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-17 10:09:27,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-12-17 10:09:27,005 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 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) [2021-12-17 10:09:27,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:09:27,099 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2021-12-17 10:09:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-17 10:09:27,099 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 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 38 [2021-12-17 10:09:27,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:09:27,101 INFO L225 Difference]: With dead ends: 58 [2021-12-17 10:09:27,101 INFO L226 Difference]: Without dead ends: 49 [2021-12-17 10:09:27,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-12-17 10:09:27,103 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 39 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 10:09:27,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 26 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 10:09:27,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-12-17 10:09:27,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-12-17 10:09:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 48 states have internal predecessors, (55), 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) [2021-12-17 10:09:27,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2021-12-17 10:09:27,109 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 38 [2021-12-17 10:09:27,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:09:27,109 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2021-12-17 10:09:27,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 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) [2021-12-17 10:09:27,110 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2021-12-17 10:09:27,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-17 10:09:27,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:09:27,111 INFO L514 BasicCegarLoop]: trace histogram [21, 15, 6, 1, 1, 1, 1, 1, 1] [2021-12-17 10:09:27,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 10:09:27,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 10:09:27,335 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:09:27,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:09:27,335 INFO L85 PathProgramCache]: Analyzing trace with hash 160479836, now seen corresponding path program 4 times [2021-12-17 10:09:27,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 10:09:27,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551000842] [2021-12-17 10:09:27,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:09:27,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 10:09:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:09:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 176 proven. 240 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-17 10:09:27,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 10:09:27,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551000842] [2021-12-17 10:09:27,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551000842] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 10:09:27,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479331291] [2021-12-17 10:09:27,518 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-17 10:09:27,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 10:09:27,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 10:09:27,519 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 10:09:27,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 10:09:27,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-17 10:09:27,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 10:09:27,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-17 10:09:27,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 10:09:27,672 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 176 proven. 240 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-17 10:09:27,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 10:09:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 176 proven. 240 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-17 10:09:28,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479331291] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 10:09:28,094 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 10:09:28,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2021-12-17 10:09:28,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551175424] [2021-12-17 10:09:28,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 10:09:28,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-17 10:09:28,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 10:09:28,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-17 10:09:28,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-12-17 10:09:28,097 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 35 states, 35 states have (on average 2.1714285714285713) internal successors, (76), 35 states have internal predecessors, (76), 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) [2021-12-17 10:09:28,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:09:28,207 INFO L93 Difference]: Finished difference Result 100 states and 129 transitions. [2021-12-17 10:09:28,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-17 10:09:28,209 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.1714285714285713) internal successors, (76), 35 states have internal predecessors, (76), 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 48 [2021-12-17 10:09:28,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:09:28,212 INFO L225 Difference]: With dead ends: 100 [2021-12-17 10:09:28,212 INFO L226 Difference]: Without dead ends: 83 [2021-12-17 10:09:28,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-12-17 10:09:28,214 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 10:09:28,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 10:09:28,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-12-17 10:09:28,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-12-17 10:09:28,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.0853658536585367) internal successors, (89), 82 states have internal predecessors, (89), 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) [2021-12-17 10:09:28,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2021-12-17 10:09:28,226 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 48 [2021-12-17 10:09:28,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:09:28,226 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2021-12-17 10:09:28,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.1714285714285713) internal successors, (76), 35 states have internal predecessors, (76), 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) [2021-12-17 10:09:28,227 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2021-12-17 10:09:28,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-17 10:09:28,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:09:28,228 INFO L514 BasicCegarLoop]: trace histogram [38, 32, 6, 1, 1, 1, 1, 1, 1] [2021-12-17 10:09:28,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 10:09:28,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 10:09:28,429 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:09:28,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:09:28,430 INFO L85 PathProgramCache]: Analyzing trace with hash 722625007, now seen corresponding path program 5 times [2021-12-17 10:09:28,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 10:09:28,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560264162] [2021-12-17 10:09:28,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:09:28,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 10:09:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:09:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 363 proven. 1056 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-17 10:09:28,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 10:09:28,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560264162] [2021-12-17 10:09:28,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560264162] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 10:09:28,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506606926] [2021-12-17 10:09:28,973 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-17 10:09:28,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 10:09:28,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 10:09:28,976 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 10:09:29,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 10:09:29,040 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) [2021-12-17 10:09:29,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 10:09:29,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-17 10:09:29,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 10:09:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 363 proven. 1056 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-17 10:09:29,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 10:09:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 363 proven. 1056 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-17 10:09:29,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506606926] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 10:09:29,884 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 10:09:29,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 53 [2021-12-17 10:09:29,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401151428] [2021-12-17 10:09:29,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 10:09:29,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-12-17 10:09:29,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 10:09:29,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-12-17 10:09:29,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-12-17 10:09:29,890 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 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) [2021-12-17 10:09:30,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:09:30,018 INFO L93 Difference]: Finished difference Result 136 states and 166 transitions. [2021-12-17 10:09:30,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-17 10:09:30,019 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 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 82 [2021-12-17 10:09:30,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:09:30,023 INFO L225 Difference]: With dead ends: 136 [2021-12-17 10:09:30,023 INFO L226 Difference]: Without dead ends: 119 [2021-12-17 10:09:30,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-12-17 10:09:30,026 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 10:09:30,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 10:09:30,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-17 10:09:30,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-12-17 10:09:30,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0593220338983051) internal successors, (125), 118 states have internal predecessors, (125), 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) [2021-12-17 10:09:30,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 125 transitions. [2021-12-17 10:09:30,050 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 125 transitions. Word has length 82 [2021-12-17 10:09:30,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:09:30,051 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 125 transitions. [2021-12-17 10:09:30,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 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) [2021-12-17 10:09:30,051 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 125 transitions. [2021-12-17 10:09:30,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-17 10:09:30,057 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:09:30,057 INFO L514 BasicCegarLoop]: trace histogram [56, 50, 6, 1, 1, 1, 1, 1, 1] [2021-12-17 10:09:30,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-17 10:09:30,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 10:09:30,279 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:09:30,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:09:30,280 INFO L85 PathProgramCache]: Analyzing trace with hash 186833573, now seen corresponding path program 6 times [2021-12-17 10:09:30,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 10:09:30,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841916993] [2021-12-17 10:09:30,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:09:30,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 10:09:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:09:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 10:09:31,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 10:09:31,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841916993] [2021-12-17 10:09:31,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841916993] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 10:09:31,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551400688] [2021-12-17 10:09:31,621 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-17 10:09:31,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 10:09:31,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 10:09:31,622 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 10:09:31,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-17 10:09:31,666 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2021-12-17 10:09:31,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 10:09:31,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 10:09:31,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 10:09:31,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 650 proven. 36 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2021-12-17 10:09:31,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 10:09:32,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 650 proven. 36 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2021-12-17 10:09:32,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551400688] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 10:09:32,308 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 10:09:32,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 9, 9] total 66 [2021-12-17 10:09:32,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270101259] [2021-12-17 10:09:32,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 10:09:32,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-12-17 10:09:32,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 10:09:32,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-12-17 10:09:32,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-12-17 10:09:32,312 INFO L87 Difference]: Start difference. First operand 119 states and 125 transitions. Second operand has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 66 states have internal predecessors, (136), 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) [2021-12-17 10:09:32,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:09:32,570 INFO L93 Difference]: Finished difference Result 139 states and 160 transitions. [2021-12-17 10:09:32,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-12-17 10:09:32,571 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 66 states have internal predecessors, (136), 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 118 [2021-12-17 10:09:32,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:09:32,572 INFO L225 Difference]: With dead ends: 139 [2021-12-17 10:09:32,572 INFO L226 Difference]: Without dead ends: 135 [2021-12-17 10:09:32,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-12-17 10:09:32,574 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 121 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 10:09:32,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 18 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 10:09:32,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-12-17 10:09:32,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-12-17 10:09:32,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.1119402985074627) internal successors, (149), 134 states have internal predecessors, (149), 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) [2021-12-17 10:09:32,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 149 transitions. [2021-12-17 10:09:32,581 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 149 transitions. Word has length 118 [2021-12-17 10:09:32,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:09:32,581 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 149 transitions. [2021-12-17 10:09:32,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 66 states have internal predecessors, (136), 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) [2021-12-17 10:09:32,581 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 149 transitions. [2021-12-17 10:09:32,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 10:09:32,583 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:09:32,583 INFO L514 BasicCegarLoop]: trace histogram [64, 50, 14, 1, 1, 1, 1, 1, 1] [2021-12-17 10:09:32,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-17 10:09:32,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 10:09:32,799 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:09:32,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:09:32,800 INFO L85 PathProgramCache]: Analyzing trace with hash -10833715, now seen corresponding path program 7 times [2021-12-17 10:09:32,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 10:09:32,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374386417] [2021-12-17 10:09:32,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:09:32,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 10:09:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:09:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 10:09:34,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 10:09:34,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374386417] [2021-12-17 10:09:34,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374386417] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 10:09:34,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828398788] [2021-12-17 10:09:34,278 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-17 10:09:34,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 10:09:34,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 10:09:34,279 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 10:09:34,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-17 10:09:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:09:34,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 66 conjunts are in the unsatisfiable core [2021-12-17 10:09:34,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 10:09:34,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 10:09:34,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 10:09:36,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 10:09:36,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828398788] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 10:09:36,647 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 10:09:36,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 103 [2021-12-17 10:09:36,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263902294] [2021-12-17 10:09:36,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 10:09:36,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-12-17 10:09:36,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 10:09:36,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-12-17 10:09:36,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-12-17 10:09:36,653 INFO L87 Difference]: Start difference. First operand 135 states and 149 transitions. Second operand has 103 states, 103 states have (on average 2.1650485436893203) internal successors, (223), 103 states have internal predecessors, (223), 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) [2021-12-17 10:09:37,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:09:37,218 INFO L93 Difference]: Finished difference Result 211 states and 296 transitions. [2021-12-17 10:09:37,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-12-17 10:09:37,218 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.1650485436893203) internal successors, (223), 103 states have internal predecessors, (223), 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 134 [2021-12-17 10:09:37,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:09:37,220 INFO L225 Difference]: With dead ends: 211 [2021-12-17 10:09:37,220 INFO L226 Difference]: Without dead ends: 207 [2021-12-17 10:09:37,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-12-17 10:09:37,223 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 100 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 10:09:37,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 26 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 10:09:37,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-17 10:09:37,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2021-12-17 10:09:37,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.2475728155339805) internal successors, (257), 206 states have internal predecessors, (257), 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) [2021-12-17 10:09:37,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 257 transitions. [2021-12-17 10:09:37,230 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 257 transitions. Word has length 134 [2021-12-17 10:09:37,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:09:37,230 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 257 transitions. [2021-12-17 10:09:37,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.1650485436893203) internal successors, (223), 103 states have internal predecessors, (223), 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) [2021-12-17 10:09:37,231 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 257 transitions. [2021-12-17 10:09:37,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-17 10:09:37,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:09:37,233 INFO L514 BasicCegarLoop]: trace histogram [100, 50, 50, 1, 1, 1, 1, 1, 1] [2021-12-17 10:09:37,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-17 10:09:37,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-17 10:09:37,443 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:09:37,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:09:37,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1394062977, now seen corresponding path program 8 times [2021-12-17 10:09:37,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 10:09:37,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187649505] [2021-12-17 10:09:37,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:09:37,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 10:09:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:09:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2021-12-17 10:09:38,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 10:09:38,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187649505] [2021-12-17 10:09:38,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187649505] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 10:09:38,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993134812] [2021-12-17 10:09:38,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 10:09:38,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 10:09:38,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 10:09:38,772 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 10:09:38,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-17 10:09:38,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 10:09:38,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 10:09:38,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 105 conjunts are in the unsatisfiable core [2021-12-17 10:09:38,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 10:09:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2021-12-17 10:09:39,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 10:09:40,646 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2021-12-17 10:09:40,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993134812] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 10:09:40,647 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 10:09:40,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 55 [2021-12-17 10:09:40,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495785597] [2021-12-17 10:09:40,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 10:09:40,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-12-17 10:09:40,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 10:09:40,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-12-17 10:09:40,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2021-12-17 10:09:40,650 INFO L87 Difference]: Start difference. First operand 207 states and 257 transitions. Second operand has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 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) [2021-12-17 10:09:41,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:09:41,741 INFO L93 Difference]: Finished difference Result 2862 states and 4237 transitions. [2021-12-17 10:09:41,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-17 10:09:41,741 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 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 206 [2021-12-17 10:09:41,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:09:41,753 INFO L225 Difference]: With dead ends: 2862 [2021-12-17 10:09:41,753 INFO L226 Difference]: Without dead ends: 2858 [2021-12-17 10:09:41,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 405 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=113, Invalid=2967, Unknown=0, NotChecked=0, Total=3080 [2021-12-17 10:09:41,756 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 52 mSDsluCounter, 5516 mSDsCounter, 0 mSdLazyCounter, 2810 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 5623 SdHoareTripleChecker+Invalid, 2810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 10:09:41,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 5623 Invalid, 2810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2810 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 10:09:41,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2021-12-17 10:09:41,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 209. [2021-12-17 10:09:41,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.25) internal successors, (260), 208 states have internal predecessors, (260), 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) [2021-12-17 10:09:41,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 260 transitions. [2021-12-17 10:09:41,794 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 260 transitions. Word has length 206 [2021-12-17 10:09:41,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:09:41,795 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 260 transitions. [2021-12-17 10:09:41,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 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) [2021-12-17 10:09:41,796 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 260 transitions. [2021-12-17 10:09:41,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-12-17 10:09:41,798 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 10:09:41,798 INFO L514 BasicCegarLoop]: trace histogram [101, 51, 50, 1, 1, 1, 1, 1, 1] [2021-12-17 10:09:41,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-17 10:09:42,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 10:09:42,011 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 10:09:42,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 10:09:42,012 INFO L85 PathProgramCache]: Analyzing trace with hash -283085658, now seen corresponding path program 9 times [2021-12-17 10:09:42,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 10:09:42,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308653652] [2021-12-17 10:09:42,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 10:09:42,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 10:09:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 10:09:42,991 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 7651 proven. 0 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2021-12-17 10:09:42,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 10:09:42,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308653652] [2021-12-17 10:09:42,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308653652] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 10:09:42,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 10:09:42,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2021-12-17 10:09:42,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903977877] [2021-12-17 10:09:42,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 10:09:42,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-17 10:09:42,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 10:09:42,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-17 10:09:42,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-12-17 10:09:42,994 INFO L87 Difference]: Start difference. First operand 209 states and 260 transitions. Second operand has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 52 states have internal predecessors, (109), 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) [2021-12-17 10:09:43,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 10:09:43,212 INFO L93 Difference]: Finished difference Result 308 states and 408 transitions. [2021-12-17 10:09:43,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-17 10:09:43,212 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 52 states have internal predecessors, (109), 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 208 [2021-12-17 10:09:43,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 10:09:43,213 INFO L225 Difference]: With dead ends: 308 [2021-12-17 10:09:43,213 INFO L226 Difference]: Without dead ends: 0 [2021-12-17 10:09:43,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-12-17 10:09:43,215 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 10:09:43,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 10:09:43,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-17 10:09:43,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-17 10:09:43,216 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) [2021-12-17 10:09:43,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-17 10:09:43,216 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 208 [2021-12-17 10:09:43,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 10:09:43,216 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-17 10:09:43,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 52 states have internal predecessors, (109), 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) [2021-12-17 10:09:43,216 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-17 10:09:43,216 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-17 10:09:43,218 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 10:09:43,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 10:09:43,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-17 10:09:45,541 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-17 10:09:45,541 INFO L858 garLoopResultBuilder]: For program point L27-2(lines 27 34) no Hoare annotation was computed. [2021-12-17 10:09:45,541 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-12-17 10:09:45,541 INFO L861 garLoopResultBuilder]: At program point L36(lines 24 37) the Hoare annotation is: true [2021-12-17 10:09:45,542 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-17 10:09:45,542 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-17 10:09:45,542 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-17 10:09:45,542 INFO L858 garLoopResultBuilder]: For program point L28(lines 28 33) no Hoare annotation was computed. [2021-12-17 10:09:45,542 INFO L854 garLoopResultBuilder]: At program point L28-2(lines 27 34) the Hoare annotation is: (or (and (<= |ULTIMATE.start_main_~y~0#1| 53) (<= |ULTIMATE.start_main_~x~0#1| 53) (<= 53 |ULTIMATE.start_main_~y~0#1|) (<= 53 |ULTIMATE.start_main_~x~0#1|)) (and (< |ULTIMATE.start_main_~x~0#1| 67) (<= 66 |ULTIMATE.start_main_~y~0#1|) (<= 66 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 66)) (and (<= 89 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 89) (<= 89 |ULTIMATE.start_main_~y~0#1|) (< |ULTIMATE.start_main_~x~0#1| 90)) (and (<= |ULTIMATE.start_main_~x~0#1| 63) (<= 63 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 63) (<= 63 |ULTIMATE.start_main_~y~0#1|)) (and (< |ULTIMATE.start_main_~x~0#1| 85) (<= 84 |ULTIMATE.start_main_~y~0#1|) (<= 84 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 84)) (and (<= |ULTIMATE.start_main_~y~0#1| 67) (<= 67 |ULTIMATE.start_main_~y~0#1|) (<= 67 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 68)) (and (< |ULTIMATE.start_main_~x~0#1| 96) (<= |ULTIMATE.start_main_~y~0#1| 95) (<= 95 |ULTIMATE.start_main_~y~0#1|) (<= 95 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~y~0#1| 94) (<= 94 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 95) (<= 94 |ULTIMATE.start_main_~y~0#1|)) (and (< |ULTIMATE.start_main_~x~0#1| 74) (<= |ULTIMATE.start_main_~y~0#1| 73) (<= 73 |ULTIMATE.start_main_~y~0#1|) (<= 73 |ULTIMATE.start_main_~x~0#1|)) (and (<= 97 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 98) (<= 97 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 97)) (and (<= 81 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 82) (<= 81 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 81)) (and (< |ULTIMATE.start_main_~x~0#1| 99) (<= |ULTIMATE.start_main_~y~0#1| 98) (<= 98 |ULTIMATE.start_main_~x~0#1|) (<= 98 |ULTIMATE.start_main_~y~0#1|)) (and (<= 76 |ULTIMATE.start_main_~y~0#1|) (< |ULTIMATE.start_main_~x~0#1| 77) (<= |ULTIMATE.start_main_~y~0#1| 76) (<= 76 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~y~0#1| 55) (<= 55 |ULTIMATE.start_main_~y~0#1|) (<= 55 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 55)) (and (< |ULTIMATE.start_main_~x~0#1| 86) (<= 85 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 85) (<= 85 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 50 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 50)) (and (< |ULTIMATE.start_main_~x~0#1| 76) (<= |ULTIMATE.start_main_~y~0#1| 75) (<= 75 |ULTIMATE.start_main_~y~0#1|) (<= 75 |ULTIMATE.start_main_~x~0#1|)) (and (<= 62 |ULTIMATE.start_main_~y~0#1|) (<= 62 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 62) (<= |ULTIMATE.start_main_~y~0#1| 62)) (and (<= 92 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 93) (<= 92 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 92)) (and (<= |ULTIMATE.start_main_~y~0#1| 54) (<= 54 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 54) (<= 54 |ULTIMATE.start_main_~y~0#1|)) (and (< |ULTIMATE.start_main_~x~0#1| 100) (<= |ULTIMATE.start_main_~y~0#1| 99) (<= 99 |ULTIMATE.start_main_~x~0#1|) (<= 99 |ULTIMATE.start_main_~y~0#1|)) (and (<= |ULTIMATE.start_main_~y~0#1| 88) (<= 88 |ULTIMATE.start_main_~y~0#1|) (< |ULTIMATE.start_main_~x~0#1| 89) (<= 88 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~y~0#1| 71) (< |ULTIMATE.start_main_~x~0#1| 72) (<= 71 |ULTIMATE.start_main_~y~0#1|) (<= 71 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 52) (<= 52 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 52) (<= 52 |ULTIMATE.start_main_~y~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 64) (<= |ULTIMATE.start_main_~y~0#1| 64) (<= 64 |ULTIMATE.start_main_~x~0#1|) (<= 64 |ULTIMATE.start_main_~y~0#1|)) (and (< |ULTIMATE.start_main_~x~0#1| 78) (<= 77 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 77) (<= 77 |ULTIMATE.start_main_~x~0#1|)) (and (< |ULTIMATE.start_main_~x~0#1| 73) (<= 72 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 72) (<= 72 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~y~0#1| 69) (< |ULTIMATE.start_main_~x~0#1| 70) (<= 69 |ULTIMATE.start_main_~x~0#1|) (<= 69 |ULTIMATE.start_main_~y~0#1|)) (and (<= 90 |ULTIMATE.start_main_~y~0#1|) (< |ULTIMATE.start_main_~x~0#1| 91) (<= |ULTIMATE.start_main_~y~0#1| 90) (<= 90 |ULTIMATE.start_main_~x~0#1|)) (and (<= 59 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 59) (<= 59 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 59)) (and (< |ULTIMATE.start_main_~x~0#1| 80) (<= |ULTIMATE.start_main_~y~0#1| 79) (<= 79 |ULTIMATE.start_main_~x~0#1|) (<= 79 |ULTIMATE.start_main_~y~0#1|)) (and (<= 56 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 56) (<= |ULTIMATE.start_main_~y~0#1| 56) (<= 56 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 57) (<= |ULTIMATE.start_main_~y~0#1| 57) (<= 57 |ULTIMATE.start_main_~x~0#1|) (<= 57 |ULTIMATE.start_main_~y~0#1|)) (and (< |ULTIMATE.start_main_~x~0#1| 84) (<= 83 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 83) (<= 83 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~y~0#1| 87) (<= 87 |ULTIMATE.start_main_~y~0#1|) (<= 87 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 88)) (and (<= 91 |ULTIMATE.start_main_~y~0#1|) (<= 91 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 92) (<= |ULTIMATE.start_main_~y~0#1| 91)) (and (<= 93 |ULTIMATE.start_main_~y~0#1|) (<= 93 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 94) (<= |ULTIMATE.start_main_~y~0#1| 93)) (and (<= 51 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 51) (<= 51 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 51)) (and (<= 82 |ULTIMATE.start_main_~x~0#1|) (<= 82 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 82) (< |ULTIMATE.start_main_~x~0#1| 83)) (and (< |ULTIMATE.start_main_~x~0#1| 66) (<= 65 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 65) (<= 65 |ULTIMATE.start_main_~y~0#1|)) (and (<= 60 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 60) (<= |ULTIMATE.start_main_~y~0#1| 60) (<= 60 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~y~0#1| 80) (<= 80 |ULTIMATE.start_main_~y~0#1|) (< |ULTIMATE.start_main_~x~0#1| 81) (<= 80 |ULTIMATE.start_main_~x~0#1|)) (and (<= 86 |ULTIMATE.start_main_~x~0#1|) (<= 86 |ULTIMATE.start_main_~y~0#1|) (< |ULTIMATE.start_main_~x~0#1| 87) (<= |ULTIMATE.start_main_~y~0#1| 86)) (and (< |ULTIMATE.start_main_~x~0#1| 69) (<= |ULTIMATE.start_main_~y~0#1| 68) (<= 68 |ULTIMATE.start_main_~y~0#1|) (<= 68 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~y~0#1| 58) (<= 58 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 58) (<= 58 |ULTIMATE.start_main_~y~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 61) (<= 61 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 61) (<= 61 |ULTIMATE.start_main_~x~0#1|)) (and (<= 74 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 74) (<= 74 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 75)) (and (<= 96 |ULTIMATE.start_main_~x~0#1|) (<= 96 |ULTIMATE.start_main_~y~0#1|) (< |ULTIMATE.start_main_~x~0#1| 97) (<= |ULTIMATE.start_main_~y~0#1| 96)) (and (<= |ULTIMATE.start_main_~y~0#1| 100) (<= 100 |ULTIMATE.start_main_~x~0#1|) (< 99 |ULTIMATE.start_main_~y~0#1|)) (and (<= 78 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 78) (< |ULTIMATE.start_main_~x~0#1| 79) (<= 78 |ULTIMATE.start_main_~y~0#1|)) (and (<= 70 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 71) (<= 70 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 70))) [2021-12-17 10:09:45,543 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-12-17 10:09:45,543 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-12-17 10:09:45,543 INFO L861 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-12-17 10:09:45,545 INFO L732 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1] [2021-12-17 10:09:45,546 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 10:09:45,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 10:09:45 BoogieIcfgContainer [2021-12-17 10:09:45,577 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 10:09:45,578 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 10:09:45,578 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 10:09:45,578 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 10:09:45,579 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:09:24" (3/4) ... [2021-12-17 10:09:45,581 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 10:09:45,587 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-12-17 10:09:45,587 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-17 10:09:45,588 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 10:09:45,588 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 10:09:45,607 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 10:09:45,607 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 10:09:45,608 INFO L158 Benchmark]: Toolchain (without parser) took 21533.05ms. Allocated memory was 96.5MB in the beginning and 172.0MB in the end (delta: 75.5MB). Free memory was 67.1MB in the beginning and 139.9MB in the end (delta: -72.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 10:09:45,608 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory was 52.7MB in the beginning and 52.7MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 10:09:45,608 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.67ms. Allocated memory is still 96.5MB. Free memory was 66.9MB in the beginning and 72.4MB in the end (delta: -5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 10:09:45,609 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.66ms. Allocated memory is still 96.5MB. Free memory was 72.4MB in the beginning and 71.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 10:09:45,609 INFO L158 Benchmark]: Boogie Preprocessor took 20.30ms. Allocated memory is still 96.5MB. Free memory was 71.1MB in the beginning and 70.1MB in the end (delta: 994.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 10:09:45,609 INFO L158 Benchmark]: RCFGBuilder took 224.24ms. Allocated memory is still 96.5MB. Free memory was 70.1MB in the beginning and 61.8MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 10:09:45,610 INFO L158 Benchmark]: TraceAbstraction took 20987.99ms. Allocated memory was 96.5MB in the beginning and 172.0MB in the end (delta: 75.5MB). Free memory was 61.5MB in the beginning and 142.0MB in the end (delta: -80.5MB). Peak memory consumption was 95.8MB. Max. memory is 16.1GB. [2021-12-17 10:09:45,610 INFO L158 Benchmark]: Witness Printer took 29.52ms. Allocated memory is still 172.0MB. Free memory was 142.0MB in the beginning and 139.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 10:09:45,611 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory was 52.7MB in the beginning and 52.7MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.67ms. Allocated memory is still 96.5MB. Free memory was 66.9MB in the beginning and 72.4MB in the end (delta: -5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.66ms. Allocated memory is still 96.5MB. Free memory was 72.4MB in the beginning and 71.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.30ms. Allocated memory is still 96.5MB. Free memory was 71.1MB in the beginning and 70.1MB in the end (delta: 994.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 224.24ms. Allocated memory is still 96.5MB. Free memory was 70.1MB in the beginning and 61.8MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 20987.99ms. Allocated memory was 96.5MB in the beginning and 172.0MB in the end (delta: 75.5MB). Free memory was 61.5MB in the beginning and 142.0MB in the end (delta: -80.5MB). Peak memory consumption was 95.8MB. Max. memory is 16.1GB. * Witness Printer took 29.52ms. Allocated memory is still 172.0MB. Free memory was 142.0MB in the beginning and 139.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: 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, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 20.9s, OverallIterations: 12, TraceHistogramMax: 101, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 317 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 317 mSDsluCounter, 5822 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5638 mSDsCounter, 1018 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3887 IncrementalHoareTripleChecker+Invalid, 4905 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1018 mSolverCounterUnsat, 184 mSDtfsCounter, 3887 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1648 GetRequests, 1237 SyntacticMatches, 9 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209occurred in iteration=11, InterpolantAutomatonStates: 418, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 2649 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 106 NumberOfFragments, 660 HoareAnnotationTreeSize, 3 FomulaSimplifications, 15473 FormulaSimplificationTreeSizeReduction, 1.3s HoareSimplificationTime, 3 FomulaSimplificationsInter, 500 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.7s InterpolantComputationTime, 1560 NumberOfCodeBlocks, 1478 NumberOfCodeBlocksAsserted, 93 NumberOfCheckSat, 2200 ConstructedInterpolants, 0 QuantifiedInterpolants, 7901 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1541 ConjunctsInSsa, 251 ConjunctsInUnsatCore, 30 InterpolantComputations, 3 PerfectInterpolantSequences, 26464/68563 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: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((y <= 53 && x <= 53) && 53 <= y) && 53 <= x) || (((x < 67 && 66 <= y) && 66 <= x) && y <= 66)) || (((89 <= x && y <= 89) && 89 <= y) && x < 90)) || (((x <= 63 && 63 <= x) && y <= 63) && 63 <= y)) || (((x < 85 && 84 <= y) && 84 <= x) && y <= 84)) || (((y <= 67 && 67 <= y) && 67 <= x) && x < 68)) || (((x < 96 && y <= 95) && 95 <= y) && 95 <= x)) || (((y <= 94 && 94 <= x) && x < 95) && 94 <= y)) || (((x < 74 && y <= 73) && 73 <= y) && 73 <= x)) || (((97 <= x && x < 98) && 97 <= y) && y <= 97)) || (((81 <= x && x < 82) && 81 <= y) && y <= 81)) || (((x < 99 && y <= 98) && 98 <= x) && 98 <= y)) || (((76 <= y && x < 77) && y <= 76) && 76 <= x)) || (((y <= 55 && 55 <= y) && 55 <= x) && x <= 55)) || (((x < 86 && 85 <= y) && y <= 85) && 85 <= x)) || ((x <= 50 && 50 <= y) && y <= 50)) || (((x < 76 && y <= 75) && 75 <= y) && 75 <= x)) || (((62 <= y && 62 <= x) && x <= 62) && y <= 62)) || (((92 <= x && x < 93) && 92 <= y) && y <= 92)) || (((y <= 54 && 54 <= x) && x <= 54) && 54 <= y)) || (((x < 100 && y <= 99) && 99 <= x) && 99 <= y)) || (((y <= 88 && 88 <= y) && x < 89) && 88 <= x)) || (((y <= 71 && x < 72) && 71 <= y) && 71 <= x)) || (((x <= 52 && 52 <= x) && y <= 52) && 52 <= y)) || (((x <= 64 && y <= 64) && 64 <= x) && 64 <= y)) || (((x < 78 && 77 <= y) && y <= 77) && 77 <= x)) || (((x < 73 && 72 <= y) && y <= 72) && 72 <= x)) || (((y <= 69 && x < 70) && 69 <= x) && 69 <= y)) || (((90 <= y && x < 91) && y <= 90) && 90 <= x)) || (((59 <= x && x <= 59) && 59 <= y) && y <= 59)) || (((x < 80 && y <= 79) && 79 <= x) && 79 <= y)) || (((56 <= y && x <= 56) && y <= 56) && 56 <= x)) || (((x <= 57 && y <= 57) && 57 <= x) && 57 <= y)) || (((x < 84 && 83 <= y) && y <= 83) && 83 <= x)) || (((y <= 87 && 87 <= y) && 87 <= x) && x < 88)) || (((91 <= y && 91 <= x) && x < 92) && y <= 91)) || (((93 <= y && 93 <= x) && x < 94) && y <= 93)) || (((51 <= x && x <= 51) && 51 <= y) && y <= 51)) || (((82 <= x && 82 <= y) && y <= 82) && x < 83)) || (((x < 66 && 65 <= x) && y <= 65) && 65 <= y)) || (((60 <= y && x <= 60) && y <= 60) && 60 <= x)) || (((y <= 80 && 80 <= y) && x < 81) && 80 <= x)) || (((86 <= x && 86 <= y) && x < 87) && y <= 86)) || (((x < 69 && y <= 68) && 68 <= y) && 68 <= x)) || (((y <= 58 && 58 <= x) && x <= 58) && 58 <= y)) || (((x <= 61 && 61 <= y) && y <= 61) && 61 <= x)) || (((74 <= y && y <= 74) && 74 <= x) && x < 75)) || (((96 <= x && 96 <= y) && x < 97) && y <= 96)) || ((y <= 100 && 100 <= x) && 99 < y)) || (((78 <= x && y <= 78) && x < 79) && 78 <= y)) || (((70 <= x && x < 71) && 70 <= y) && y <= 70) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-17 10:09:45,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE