./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/nla-digbench-scaling/cohencu-ll_valuebound50.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0bcbcb4a55258889434b8bf703da9ec6fb29d07a2fbacad968a5ab15e005b314 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 15:46:29,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 15:46:29,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 15:46:29,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 15:46:29,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 15:46:29,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 15:46:29,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 15:46:30,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 15:46:30,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 15:46:30,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 15:46:30,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 15:46:30,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 15:46:30,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 15:46:30,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 15:46:30,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 15:46:30,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 15:46:30,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 15:46:30,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 15:46:30,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 15:46:30,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 15:46:30,024 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 15:46:30,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 15:46:30,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 15:46:30,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 15:46:30,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 15:46:30,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 15:46:30,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 15:46:30,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 15:46:30,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 15:46:30,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 15:46:30,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 15:46:30,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 15:46:30,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 15:46:30,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 15:46:30,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 15:46:30,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 15:46:30,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 15:46:30,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 15:46:30,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 15:46:30,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 15:46:30,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 15:46:30,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 15:46:30,038 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 15:46:30,061 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 15:46:30,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 15:46:30,062 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 15:46:30,062 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 15:46:30,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 15:46:30,062 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 15:46:30,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 15:46:30,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 15:46:30,063 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 15:46:30,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 15:46:30,064 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 15:46:30,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 15:46:30,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 15:46:30,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 15:46:30,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 15:46:30,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 15:46:30,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 15:46:30,065 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 15:46:30,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 15:46:30,065 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 15:46:30,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 15:46:30,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 15:46:30,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 15:46:30,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 15:46:30,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 15:46:30,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 15:46:30,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 15:46:30,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 15:46:30,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 15:46:30,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 15:46:30,067 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 15:46:30,067 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 15:46:30,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 15:46:30,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bcbcb4a55258889434b8bf703da9ec6fb29d07a2fbacad968a5ab15e005b314 [2022-07-22 15:46:30,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 15:46:30,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 15:46:30,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 15:46:30,274 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 15:46:30,274 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 15:46:30,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound50.c [2022-07-22 15:46:30,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/809302d2d/e9a23c03d34549e8857001cd79407de3/FLAG35d5392f9 [2022-07-22 15:46:30,680 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 15:46:30,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound50.c [2022-07-22 15:46:30,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/809302d2d/e9a23c03d34549e8857001cd79407de3/FLAG35d5392f9 [2022-07-22 15:46:30,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/809302d2d/e9a23c03d34549e8857001cd79407de3 [2022-07-22 15:46:30,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 15:46:30,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 15:46:30,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 15:46:30,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 15:46:30,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 15:46:30,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:46:30" (1/1) ... [2022-07-22 15:46:30,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d2f129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:30, skipping insertion in model container [2022-07-22 15:46:30,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:46:30" (1/1) ... [2022-07-22 15:46:30,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 15:46:30,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 15:46:30,876 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/nla-digbench-scaling/cohencu-ll_valuebound50.c[588,601] [2022-07-22 15:46:30,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 15:46:30,903 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 15:46:30,915 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/nla-digbench-scaling/cohencu-ll_valuebound50.c[588,601] [2022-07-22 15:46:30,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 15:46:30,940 INFO L208 MainTranslator]: Completed translation [2022-07-22 15:46:30,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:30 WrapperNode [2022-07-22 15:46:30,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 15:46:30,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 15:46:30,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 15:46:30,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 15:46:30,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:30" (1/1) ... [2022-07-22 15:46:30,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:30" (1/1) ... [2022-07-22 15:46:30,970 INFO L137 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-07-22 15:46:30,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 15:46:30,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 15:46:30,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 15:46:30,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 15:46:30,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:30" (1/1) ... [2022-07-22 15:46:30,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:30" (1/1) ... [2022-07-22 15:46:30,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:30" (1/1) ... [2022-07-22 15:46:30,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:30" (1/1) ... [2022-07-22 15:46:30,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:30" (1/1) ... [2022-07-22 15:46:30,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:30" (1/1) ... [2022-07-22 15:46:30,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:30" (1/1) ... [2022-07-22 15:46:30,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 15:46:30,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 15:46:30,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 15:46:30,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 15:46:30,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:30" (1/1) ... [2022-07-22 15:46:31,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 15:46:31,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:46:31,045 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 15:46:31,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 15:46:31,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 15:46:31,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 15:46:31,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 15:46:31,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 15:46:31,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 15:46:31,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 15:46:31,142 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 15:46:31,144 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 15:46:31,283 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 15:46:31,287 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 15:46:31,287 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 15:46:31,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:46:31 BoogieIcfgContainer [2022-07-22 15:46:31,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 15:46:31,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 15:46:31,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 15:46:31,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 15:46:31,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 03:46:30" (1/3) ... [2022-07-22 15:46:31,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5588e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:46:31, skipping insertion in model container [2022-07-22 15:46:31,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:30" (2/3) ... [2022-07-22 15:46:31,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5588e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:46:31, skipping insertion in model container [2022-07-22 15:46:31,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:46:31" (3/3) ... [2022-07-22 15:46:31,309 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound50.c [2022-07-22 15:46:31,319 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 15:46:31,320 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 15:46:31,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 15:46:31,398 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1d4495de, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4b5cdcd8 [2022-07-22 15:46:31,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 15:46:31,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-22 15:46:31,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 15:46:31,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:46:31,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:46:31,406 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:46:31,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:46:31,413 INFO L85 PathProgramCache]: Analyzing trace with hash -588951690, now seen corresponding path program 1 times [2022-07-22 15:46:31,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:46:31,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793820741] [2022-07-22 15:46:31,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:31,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:46:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:46:31,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:46:31,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:46:31,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793820741] [2022-07-22 15:46:31,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793820741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:46:31,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:46:31,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 15:46:31,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465667585] [2022-07-22 15:46:31,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:46:31,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 15:46:31,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:46:31,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 15:46:31,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 15:46:31,559 INFO L87 Difference]: Start difference. First operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:46:31,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:46:31,578 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2022-07-22 15:46:31,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 15:46:31,581 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-22 15:46:31,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:46:31,590 INFO L225 Difference]: With dead ends: 51 [2022-07-22 15:46:31,590 INFO L226 Difference]: Without dead ends: 23 [2022-07-22 15:46:31,593 INFO L412 NwaCegarLoop]: 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 [2022-07-22 15:46:31,595 INFO L413 NwaCegarLoop]: 37 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, 37 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 [2022-07-22 15:46:31,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:46:31,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-22 15:46:31,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-22 15:46:31,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-22 15:46:31,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2022-07-22 15:46:31,636 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 9 [2022-07-22 15:46:31,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:46:31,636 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2022-07-22 15:46:31,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:46:31,637 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2022-07-22 15:46:31,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 15:46:31,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:46:31,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:46:31,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 15:46:31,639 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:46:31,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:46:31,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1187604804, now seen corresponding path program 1 times [2022-07-22 15:46:31,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:46:31,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828788319] [2022-07-22 15:46:31,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:31,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:46:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:46:31,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:46:31,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:46:31,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828788319] [2022-07-22 15:46:31,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828788319] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:46:31,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:46:31,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 15:46:31,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733585857] [2022-07-22 15:46:31,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:46:31,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 15:46:31,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:46:31,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 15:46:31,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 15:46:31,777 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:46:31,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:46:31,853 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2022-07-22 15:46:31,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 15:46:31,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-22 15:46:31,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:46:31,855 INFO L225 Difference]: With dead ends: 29 [2022-07-22 15:46:31,855 INFO L226 Difference]: Without dead ends: 27 [2022-07-22 15:46:31,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 15:46:31,859 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:46:31,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 63 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:46:31,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-22 15:46:31,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-22 15:46:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-22 15:46:31,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-07-22 15:46:31,871 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 9 [2022-07-22 15:46:31,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:46:31,872 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-07-22 15:46:31,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:46:31,872 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-07-22 15:46:31,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-22 15:46:31,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:46:31,874 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:46:31,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 15:46:31,875 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:46:31,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:46:31,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1137950087, now seen corresponding path program 1 times [2022-07-22 15:46:31,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:46:31,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990257310] [2022-07-22 15:46:31,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:31,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:46:31,889 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:46:31,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1978125630] [2022-07-22 15:46:31,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:31,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:31,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:46:31,899 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:46:31,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 15:46:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:46:31,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 15:46:31,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:46:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:46:31,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 15:46:31,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:46:31,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990257310] [2022-07-22 15:46:31,999 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:46:31,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978125630] [2022-07-22 15:46:31,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978125630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:46:32,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:46:32,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 15:46:32,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226314615] [2022-07-22 15:46:32,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:46:32,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 15:46:32,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:46:32,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 15:46:32,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 15:46:32,001 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 15:46:32,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:46:32,060 INFO L93 Difference]: Finished difference Result 46 states and 65 transitions. [2022-07-22 15:46:32,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 15:46:32,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-07-22 15:46:32,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:46:32,061 INFO L225 Difference]: With dead ends: 46 [2022-07-22 15:46:32,061 INFO L226 Difference]: Without dead ends: 44 [2022-07-22 15:46:32,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 15:46:32,062 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:46:32,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 116 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:46:32,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-22 15:46:32,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2022-07-22 15:46:32,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-22 15:46:32,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2022-07-22 15:46:32,069 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 14 [2022-07-22 15:46:32,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:46:32,069 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2022-07-22 15:46:32,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 15:46:32,070 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2022-07-22 15:46:32,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-22 15:46:32,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:46:32,070 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:46:32,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 15:46:32,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:32,292 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:46:32,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:46:32,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1500531996, now seen corresponding path program 1 times [2022-07-22 15:46:32,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:46:32,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618250322] [2022-07-22 15:46:32,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:32,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:46:32,314 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:46:32,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401872929] [2022-07-22 15:46:32,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:32,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:32,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:46:32,316 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:46:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:46:32,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 15:46:32,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 15:46:32,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:46:32,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 15:46:32,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 15:46:32,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:46:32,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618250322] [2022-07-22 15:46:32,395 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:46:32,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401872929] [2022-07-22 15:46:32,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401872929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:46:32,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:46:32,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 15:46:32,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603522875] [2022-07-22 15:46:32,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:46:32,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 15:46:32,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:46:32,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 15:46:32,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 15:46:32,397 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 15:46:32,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:46:32,471 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2022-07-22 15:46:32,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 15:46:32,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-07-22 15:46:32,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:46:32,473 INFO L225 Difference]: With dead ends: 50 [2022-07-22 15:46:32,473 INFO L226 Difference]: Without dead ends: 48 [2022-07-22 15:46:32,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 15:46:32,475 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:46:32,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 117 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:46:32,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-22 15:46:32,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2022-07-22 15:46:32,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-07-22 15:46:32,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 59 transitions. [2022-07-22 15:46:32,484 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 59 transitions. Word has length 19 [2022-07-22 15:46:32,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:46:32,484 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 59 transitions. [2022-07-22 15:46:32,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 15:46:32,485 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2022-07-22 15:46:32,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-22 15:46:32,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:46:32,485 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:46:32,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-22 15:46:32,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-22 15:46:32,700 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:46:32,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:46:32,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1926539111, now seen corresponding path program 1 times [2022-07-22 15:46:32,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:46:32,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867327733] [2022-07-22 15:46:32,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:32,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:46:32,716 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:46:32,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729354784] [2022-07-22 15:46:32,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:32,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:32,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:46:32,735 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:46:32,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 15:46:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:46:32,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 15:46:32,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:46:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 15:46:32,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 15:46:32,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:46:32,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867327733] [2022-07-22 15:46:32,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:46:32,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729354784] [2022-07-22 15:46:32,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729354784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:46:32,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:46:32,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 15:46:32,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092742563] [2022-07-22 15:46:32,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:46:32,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 15:46:32,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:46:32,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 15:46:32,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 15:46:32,834 INFO L87 Difference]: Start difference. First operand 44 states and 59 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 15:46:32,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:46:32,888 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2022-07-22 15:46:32,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 15:46:32,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-07-22 15:46:32,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:46:32,889 INFO L225 Difference]: With dead ends: 58 [2022-07-22 15:46:32,889 INFO L226 Difference]: Without dead ends: 46 [2022-07-22 15:46:32,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 15:46:32,890 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:46:32,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 103 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:46:32,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-07-22 15:46:32,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-07-22 15:46:32,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-22 15:46:32,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2022-07-22 15:46:32,895 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 24 [2022-07-22 15:46:32,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:46:32,896 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2022-07-22 15:46:32,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 15:46:32,896 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2022-07-22 15:46:32,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 15:46:32,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:46:32,897 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:46:32,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 15:46:33,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:33,127 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:46:33,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:46:33,127 INFO L85 PathProgramCache]: Analyzing trace with hash -492592860, now seen corresponding path program 1 times [2022-07-22 15:46:33,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:46:33,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381535061] [2022-07-22 15:46:33,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:33,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:46:33,135 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:46:33,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006936109] [2022-07-22 15:46:33,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:33,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:33,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:46:33,137 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:46:33,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 15:46:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:46:33,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 15:46:33,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:46:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-22 15:46:33,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:46:33,305 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-22 15:46:33,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:46:33,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381535061] [2022-07-22 15:46:33,305 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:46:33,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006936109] [2022-07-22 15:46:33,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006936109] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:46:33,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 15:46:33,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-07-22 15:46:33,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358802291] [2022-07-22 15:46:33,306 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 15:46:33,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 15:46:33,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:46:33,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 15:46:33,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 15:46:33,307 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 15:46:33,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:46:33,551 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2022-07-22 15:46:33,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 15:46:33,552 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 41 [2022-07-22 15:46:33,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:46:33,552 INFO L225 Difference]: With dead ends: 69 [2022-07-22 15:46:33,552 INFO L226 Difference]: Without dead ends: 67 [2022-07-22 15:46:33,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-22 15:46:33,553 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 15:46:33,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 96 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 15:46:33,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-07-22 15:46:33,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2022-07-22 15:46:33,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-22 15:46:33,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-07-22 15:46:33,560 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 41 [2022-07-22 15:46:33,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:46:33,560 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-07-22 15:46:33,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 15:46:33,561 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-07-22 15:46:33,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-22 15:46:33,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:46:33,561 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:46:33,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 15:46:33,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:33,776 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:46:33,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:46:33,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1495173479, now seen corresponding path program 2 times [2022-07-22 15:46:33,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:46:33,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430963911] [2022-07-22 15:46:33,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:33,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:46:33,784 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:46:33,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764289608] [2022-07-22 15:46:33,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 15:46:33,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:33,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:46:33,790 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:46:33,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 15:46:33,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 15:46:33,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 15:46:33,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 15:46:33,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:46:33,956 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 15:46:33,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:46:34,009 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 15:46:34,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:46:34,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430963911] [2022-07-22 15:46:34,009 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:46:34,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764289608] [2022-07-22 15:46:34,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764289608] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:46:34,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 15:46:34,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-07-22 15:46:34,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380357357] [2022-07-22 15:46:34,010 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 15:46:34,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 15:46:34,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:46:34,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 15:46:34,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 15:46:34,028 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-22 15:46:34,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:46:34,137 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2022-07-22 15:46:34,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 15:46:34,138 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 46 [2022-07-22 15:46:34,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:46:34,140 INFO L225 Difference]: With dead ends: 73 [2022-07-22 15:46:34,140 INFO L226 Difference]: Without dead ends: 71 [2022-07-22 15:46:34,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-22 15:46:34,141 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 6 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 15:46:34,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 197 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 15:46:34,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-07-22 15:46:34,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2022-07-22 15:46:34,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 36 states have internal predecessors, (36), 19 states have call successors, (19), 8 states have call predecessors, (19), 8 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-22 15:46:34,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2022-07-22 15:46:34,158 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 46 [2022-07-22 15:46:34,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:46:34,158 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2022-07-22 15:46:34,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-22 15:46:34,158 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2022-07-22 15:46:34,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-22 15:46:34,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:46:34,159 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:46:34,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 15:46:34,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:34,376 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:46:34,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:46:34,376 INFO L85 PathProgramCache]: Analyzing trace with hash 900098756, now seen corresponding path program 3 times [2022-07-22 15:46:34,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:46:34,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508458855] [2022-07-22 15:46:34,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:34,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:46:34,384 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:46:34,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592518849] [2022-07-22 15:46:34,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 15:46:34,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:34,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:46:34,388 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:46:34,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 15:46:34,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-22 15:46:34,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 15:46:34,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-22 15:46:34,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:46:34,560 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-22 15:46:34,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:46:34,767 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-22 15:46:34,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:46:34,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508458855] [2022-07-22 15:46:34,768 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:46:34,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592518849] [2022-07-22 15:46:34,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592518849] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:46:34,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 15:46:34,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-07-22 15:46:34,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599978265] [2022-07-22 15:46:34,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 15:46:34,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 15:46:34,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:46:34,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 15:46:34,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 15:46:34,770 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-22 15:46:34,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:46:34,985 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2022-07-22 15:46:34,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 15:46:34,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 51 [2022-07-22 15:46:34,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:46:34,986 INFO L225 Difference]: With dead ends: 85 [2022-07-22 15:46:34,986 INFO L226 Difference]: Without dead ends: 77 [2022-07-22 15:46:34,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-22 15:46:34,987 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 15:46:34,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 95 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 15:46:34,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-07-22 15:46:34,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2022-07-22 15:46:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 45 states have internal predecessors, (45), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-22 15:46:34,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2022-07-22 15:46:34,995 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 51 [2022-07-22 15:46:34,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:46:34,998 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2022-07-22 15:46:34,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-22 15:46:34,998 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2022-07-22 15:46:35,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 15:46:35,000 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:46:35,001 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:46:35,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 15:46:35,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:35,215 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:46:35,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:46:35,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1061977627, now seen corresponding path program 1 times [2022-07-22 15:46:35,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:46:35,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730711987] [2022-07-22 15:46:35,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:35,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:46:35,222 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:46:35,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84312493] [2022-07-22 15:46:35,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:35,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:35,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:46:35,233 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:46:35,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 15:46:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:46:35,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-22 15:46:35,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:46:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-07-22 15:46:35,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:46:35,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:46:35,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730711987] [2022-07-22 15:46:35,550 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:46:35,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84312493] [2022-07-22 15:46:35,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84312493] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:46:35,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 15:46:35,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-07-22 15:46:35,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914771238] [2022-07-22 15:46:35,550 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 15:46:35,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 15:46:35,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:46:35,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 15:46:35,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-22 15:46:35,552 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 15:46:35,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:46:35,678 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2022-07-22 15:46:35,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 15:46:35,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 67 [2022-07-22 15:46:35,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:46:35,679 INFO L225 Difference]: With dead ends: 87 [2022-07-22 15:46:35,679 INFO L226 Difference]: Without dead ends: 85 [2022-07-22 15:46:35,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-22 15:46:35,680 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 15:46:35,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 116 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 15:46:35,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-22 15:46:35,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2022-07-22 15:46:35,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 50 states have (on average 1.06) internal successors, (53), 52 states have internal predecessors, (53), 20 states have call successors, (20), 13 states have call predecessors, (20), 13 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-22 15:46:35,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2022-07-22 15:46:35,691 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 67 [2022-07-22 15:46:35,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:46:35,691 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2022-07-22 15:46:35,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 15:46:35,691 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2022-07-22 15:46:35,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 15:46:35,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:46:35,692 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:46:35,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 15:46:35,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:35,909 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:46:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:46:35,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1246911088, now seen corresponding path program 1 times [2022-07-22 15:46:35,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:46:35,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786830724] [2022-07-22 15:46:35,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:35,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:46:35,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:46:35,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545971965] [2022-07-22 15:46:35,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:35,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:35,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:46:35,918 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) [2022-07-22 15:46:35,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 15:46:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:46:35,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-22 15:46:35,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:46:36,116 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-22 15:46:36,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:46:36,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:46:36,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786830724] [2022-07-22 15:46:36,309 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:46:36,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545971965] [2022-07-22 15:46:36,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545971965] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:46:36,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 15:46:36,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-07-22 15:46:36,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648137628] [2022-07-22 15:46:36,309 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 15:46:36,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 15:46:36,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:46:36,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 15:46:36,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-22 15:46:36,311 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 15:46:36,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:46:36,449 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2022-07-22 15:46:36,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 15:46:36,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 72 [2022-07-22 15:46:36,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:46:36,450 INFO L225 Difference]: With dead ends: 91 [2022-07-22 15:46:36,450 INFO L226 Difference]: Without dead ends: 78 [2022-07-22 15:46:36,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-07-22 15:46:36,451 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 15:46:36,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 146 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 15:46:36,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-07-22 15:46:36,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-07-22 15:46:36,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 18 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-07-22 15:46:36,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2022-07-22 15:46:36,465 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 72 [2022-07-22 15:46:36,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:46:36,465 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2022-07-22 15:46:36,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 15:46:36,466 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2022-07-22 15:46:36,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-22 15:46:36,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:46:36,468 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-22 15:46:36,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-22 15:46:36,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 15:46:36,688 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:46:36,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:46:36,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1961933060, now seen corresponding path program 4 times [2022-07-22 15:46:36,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:46:36,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754551382] [2022-07-22 15:46:36,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:36,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:46:36,696 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:46:36,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431145342] [2022-07-22 15:46:36,696 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 15:46:36,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:36,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:46:36,697 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) [2022-07-22 15:46:36,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 15:46:36,733 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 15:46:36,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 15:46:36,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-22 15:46:36,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:46:36,894 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 70 proven. 29 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-07-22 15:46:36,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:46:37,216 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 81 proven. 15 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-07-22 15:46:37,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:46:37,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754551382] [2022-07-22 15:46:37,217 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:46:37,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431145342] [2022-07-22 15:46:37,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431145342] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:46:37,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 15:46:37,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-07-22 15:46:37,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287739801] [2022-07-22 15:46:37,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 15:46:37,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 15:46:37,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:46:37,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 15:46:37,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-07-22 15:46:37,219 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 8 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) [2022-07-22 15:46:37,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:46:37,662 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2022-07-22 15:46:37,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 15:46:37,662 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 8 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) Word has length 73 [2022-07-22 15:46:37,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:46:37,664 INFO L225 Difference]: With dead ends: 109 [2022-07-22 15:46:37,664 INFO L226 Difference]: Without dead ends: 107 [2022-07-22 15:46:37,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-07-22 15:46:37,665 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 27 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 15:46:37,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 81 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 15:46:37,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-07-22 15:46:37,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 97. [2022-07-22 15:46:37,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 62 states have internal predecessors, (62), 20 states have call successors, (20), 16 states have call predecessors, (20), 16 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-22 15:46:37,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2022-07-22 15:46:37,674 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 73 [2022-07-22 15:46:37,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:46:37,674 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2022-07-22 15:46:37,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 8 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) [2022-07-22 15:46:37,675 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2022-07-22 15:46:37,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-22 15:46:37,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:46:37,676 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:46:37,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 15:46:37,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:37,892 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:46:37,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:46:37,892 INFO L85 PathProgramCache]: Analyzing trace with hash 671163038, now seen corresponding path program 2 times [2022-07-22 15:46:37,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:46:37,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206429035] [2022-07-22 15:46:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:37,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:46:37,899 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:46:37,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263598402] [2022-07-22 15:46:37,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 15:46:37,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:37,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:46:37,901 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:46:37,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 15:46:37,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 15:46:37,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 15:46:37,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-22 15:46:37,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:46:38,109 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 32 proven. 21 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-07-22 15:46:38,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:46:38,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:46:38,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206429035] [2022-07-22 15:46:38,247 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:46:38,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263598402] [2022-07-22 15:46:38,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263598402] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:46:38,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 15:46:38,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-07-22 15:46:38,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775359530] [2022-07-22 15:46:38,248 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 15:46:38,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 15:46:38,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:46:38,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 15:46:38,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-22 15:46:38,248 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-22 15:46:38,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:46:38,404 INFO L93 Difference]: Finished difference Result 122 states and 128 transitions. [2022-07-22 15:46:38,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 15:46:38,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 94 [2022-07-22 15:46:38,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:46:38,405 INFO L225 Difference]: With dead ends: 122 [2022-07-22 15:46:38,405 INFO L226 Difference]: Without dead ends: 120 [2022-07-22 15:46:38,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-22 15:46:38,406 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 15:46:38,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 135 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 15:46:38,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-07-22 15:46:38,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2022-07-22 15:46:38,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 75 states have internal predecessors, (76), 25 states have call successors, (25), 20 states have call predecessors, (25), 20 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-22 15:46:38,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 125 transitions. [2022-07-22 15:46:38,416 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 125 transitions. Word has length 94 [2022-07-22 15:46:38,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:46:38,417 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 125 transitions. [2022-07-22 15:46:38,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-22 15:46:38,417 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 125 transitions. [2022-07-22 15:46:38,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-22 15:46:38,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:46:38,418 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:46:38,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 15:46:38,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 15:46:38,634 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:46:38,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:46:38,635 INFO L85 PathProgramCache]: Analyzing trace with hash -674604307, now seen corresponding path program 2 times [2022-07-22 15:46:38,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:46:38,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697977899] [2022-07-22 15:46:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:38,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:46:38,642 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:46:38,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446620109] [2022-07-22 15:46:38,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 15:46:38,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:38,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:46:38,652 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:46:38,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 15:46:38,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 15:46:38,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 15:46:38,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-22 15:46:38,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:46:38,826 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 34 proven. 21 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-07-22 15:46:38,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:46:38,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:46:38,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697977899] [2022-07-22 15:46:38,947 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:46:38,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446620109] [2022-07-22 15:46:38,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446620109] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:46:38,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 15:46:38,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-07-22 15:46:38,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675864234] [2022-07-22 15:46:38,948 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 15:46:38,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 15:46:38,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:46:38,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 15:46:38,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-22 15:46:38,949 INFO L87 Difference]: Start difference. First operand 119 states and 125 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 15:46:39,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:46:39,113 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2022-07-22 15:46:39,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 15:46:39,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 99 [2022-07-22 15:46:39,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:46:39,114 INFO L225 Difference]: With dead ends: 130 [2022-07-22 15:46:39,114 INFO L226 Difference]: Without dead ends: 117 [2022-07-22 15:46:39,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-22 15:46:39,115 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 15:46:39,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 144 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 15:46:39,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-22 15:46:39,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-07-22 15:46:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 74 states have internal predecessors, (75), 23 states have call successors, (23), 20 states have call predecessors, (23), 20 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-22 15:46:39,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 120 transitions. [2022-07-22 15:46:39,124 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 120 transitions. Word has length 99 [2022-07-22 15:46:39,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:46:39,125 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 120 transitions. [2022-07-22 15:46:39,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 15:46:39,125 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2022-07-22 15:46:39,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-22 15:46:39,126 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:46:39,126 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:46:39,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 15:46:39,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-22 15:46:39,342 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:46:39,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:46:39,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1837317061, now seen corresponding path program 3 times [2022-07-22 15:46:39,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:46:39,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522772318] [2022-07-22 15:46:39,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:39,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:46:39,350 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:46:39,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365246571] [2022-07-22 15:46:39,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 15:46:39,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:39,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:46:39,372 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:46:39,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 15:46:39,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-22 15:46:39,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 15:46:39,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-22 15:46:39,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:46:40,050 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2022-07-22 15:46:40,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:46:40,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:46:40,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522772318] [2022-07-22 15:46:40,499 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:46:40,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365246571] [2022-07-22 15:46:40,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365246571] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:46:40,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 15:46:40,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-07-22 15:46:40,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170586604] [2022-07-22 15:46:40,500 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 15:46:40,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 15:46:40,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:46:40,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 15:46:40,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-22 15:46:40,500 INFO L87 Difference]: Start difference. First operand 117 states and 120 transitions. Second operand has 11 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-22 15:46:41,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-22 15:46:43,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-22 15:46:44,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:46:44,796 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2022-07-22 15:46:44,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 15:46:44,796 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 121 [2022-07-22 15:46:44,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:46:44,797 INFO L225 Difference]: With dead ends: 123 [2022-07-22 15:46:44,797 INFO L226 Difference]: Without dead ends: 119 [2022-07-22 15:46:44,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-22 15:46:44,798 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-22 15:46:44,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 43 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 126 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-07-22 15:46:44,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-07-22 15:46:44,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-07-22 15:46:44,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 75 states have (on average 1.0133333333333334) internal successors, (76), 75 states have internal predecessors, (76), 23 states have call successors, (23), 21 states have call predecessors, (23), 20 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-22 15:46:44,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2022-07-22 15:46:44,810 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 121 [2022-07-22 15:46:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:46:44,810 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2022-07-22 15:46:44,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-22 15:46:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2022-07-22 15:46:44,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-22 15:46:44,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:46:44,811 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:46:44,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 15:46:45,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 15:46:45,012 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:46:45,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:46:45,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1974193296, now seen corresponding path program 3 times [2022-07-22 15:46:45,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:46:45,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887531125] [2022-07-22 15:46:45,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:46:45,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:46:45,019 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:46:45,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1249259175] [2022-07-22 15:46:45,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 15:46:45,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:46:45,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:46:45,024 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:46:45,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 15:46:46,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-22 15:46:46,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 15:46:46,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-22 15:46:46,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:46:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 181 proven. 69 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-07-22 15:46:56,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:46:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 148 proven. 39 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2022-07-22 15:46:58,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:46:58,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887531125] [2022-07-22 15:46:58,036 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:46:58,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249259175] [2022-07-22 15:46:58,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249259175] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:46:58,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 15:46:58,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 17 [2022-07-22 15:46:58,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755293827] [2022-07-22 15:46:58,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 15:46:58,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 15:46:58,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:46:58,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 15:46:58,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-07-22 15:46:58,038 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand has 17 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2022-07-22 15:47:02,481 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-22 15:47:04,483 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-22 15:47:06,512 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-22 15:47:08,020 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-22 15:47:08,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:47:08,020 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions. [2022-07-22 15:47:08,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 15:47:08,021 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) Word has length 126 [2022-07-22 15:47:08,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:47:08,022 INFO L225 Difference]: With dead ends: 119 [2022-07-22 15:47:08,022 INFO L226 Difference]: Without dead ends: 0 [2022-07-22 15:47:08,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 233 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2022-07-22 15:47:08,022 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 27 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 73 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-07-22 15:47:08,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 41 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 163 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-07-22 15:47:08,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-22 15:47:08,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-22 15:47:08,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:47:08,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-22 15:47:08,023 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 126 [2022-07-22 15:47:08,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:47:08,023 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 15:47:08,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2022-07-22 15:47:08,023 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-22 15:47:08,023 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-22 15:47:08,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 15:47:08,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 15:47:08,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-22 15:47:08,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-22 15:47:12,126 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-22 15:47:12,126 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (<= |ULTIMATE.start_main_~a~0#1| 50) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-22 15:47:12,126 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 46) the Hoare annotation is: (let ((.cse3 (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1))) (.cse0 (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1))) (.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24)))) (.cse2 (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) (.cse4 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 .cse1 .cse2 .cse3 (< |ULTIMATE.start_main_~a~0#1| 2) (= |ULTIMATE.start_main_~z~0#1| 18)) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse0 (not (<= (div (+ (* (- 1) |ULTIMATE.start_main_~z~0#1|) 6) (- 6)) |ULTIMATE.start_main_~a~0#1|)) .cse1 (<= |ULTIMATE.start_main_~a~0#1| 50) .cse2 .cse3 .cse4) (and .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| 1) .cse2 (< |ULTIMATE.start_main_~a~0#1| 1) .cse4) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2022-07-22 15:47:12,126 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) [2022-07-22 15:47:12,126 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) [2022-07-22 15:47:12,127 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse3 (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1))) (.cse0 (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1))) (.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24)))) (.cse2 (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) (.cse4 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 .cse1 .cse2 .cse3 (< |ULTIMATE.start_main_~a~0#1| 2) (= |ULTIMATE.start_main_~z~0#1| 18)) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse0 (not (<= (div (+ (* (- 1) |ULTIMATE.start_main_~z~0#1|) 6) (- 6)) |ULTIMATE.start_main_~a~0#1|)) .cse1 (<= |ULTIMATE.start_main_~a~0#1| 50) .cse2 .cse3 .cse4) (and .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| 1) .cse2 (< |ULTIMATE.start_main_~a~0#1| 1) .cse4) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2022-07-22 15:47:12,127 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2022-07-22 15:47:12,127 INFO L899 garLoopResultBuilder]: For program point L38(lines 33 46) no Hoare annotation was computed. [2022-07-22 15:47:12,127 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (<= |ULTIMATE.start_main_~a~0#1| 50) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-22 15:47:12,127 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (<= |ULTIMATE.start_main_~a~0#1| 50) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-22 15:47:12,127 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (<= |ULTIMATE.start_main_~a~0#1| 50) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-22 15:47:12,127 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-22 15:47:12,127 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-22 15:47:12,127 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-22 15:47:12,127 INFO L902 garLoopResultBuilder]: At program point L55(lines 22 56) the Hoare annotation is: true [2022-07-22 15:47:12,127 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2022-07-22 15:47:12,127 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) [2022-07-22 15:47:12,127 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse3 (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1))) (.cse0 (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1))) (.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24)))) (.cse2 (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) (.cse4 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 .cse1 .cse2 .cse3 (not (<= 2 |ULTIMATE.start_main_~a~0#1|)) (= |ULTIMATE.start_main_~z~0#1| 18)) (and .cse2 (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse0 (not (<= (div (+ (* (- 1) |ULTIMATE.start_main_~z~0#1|) 6) (- 6)) |ULTIMATE.start_main_~a~0#1|)) .cse1 (<= |ULTIMATE.start_main_~a~0#1| 50) .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 (< |ULTIMATE.start_main_~a~0#1| 1) .cse4 (<= 12 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 1)))) [2022-07-22 15:47:12,127 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-07-22 15:47:12,127 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (<= |ULTIMATE.start_main_~a~0#1| 50) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-22 15:47:12,127 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (<= |ULTIMATE.start_main_~a~0#1| 50) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-22 15:47:12,127 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-07-22 15:47:12,127 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-07-22 15:47:12,127 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-07-22 15:47:12,127 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-07-22 15:47:12,127 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-07-22 15:47:12,128 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-07-22 15:47:12,130 INFO L356 BasicCegarLoop]: Path program histogram: [4, 3, 3, 1, 1, 1, 1, 1] [2022-07-22 15:47:12,131 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 15:47:12,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 03:47:12 BoogieIcfgContainer [2022-07-22 15:47:12,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 15:47:12,146 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 15:47:12,146 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 15:47:12,146 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 15:47:12,147 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:46:31" (3/4) ... [2022-07-22 15:47:12,149 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 15:47:12,168 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-22 15:47:12,174 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-22 15:47:12,175 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-22 15:47:12,175 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 15:47:12,175 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 15:47:12,226 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 15:47:12,226 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 15:47:12,227 INFO L158 Benchmark]: Toolchain (without parser) took 41528.34ms. Allocated memory was 100.7MB in the beginning and 201.3MB in the end (delta: 100.7MB). Free memory was 39.8MB in the beginning and 122.9MB in the end (delta: -83.1MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2022-07-22 15:47:12,227 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory was 55.9MB in the beginning and 55.8MB in the end (delta: 83.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 15:47:12,227 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.03ms. Allocated memory was 100.7MB in the beginning and 138.4MB in the end (delta: 37.7MB). Free memory was 39.6MB in the beginning and 114.0MB in the end (delta: -74.4MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2022-07-22 15:47:12,227 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.01ms. Allocated memory is still 138.4MB. Free memory was 114.0MB in the beginning and 112.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 15:47:12,227 INFO L158 Benchmark]: Boogie Preprocessor took 24.08ms. Allocated memory is still 138.4MB. Free memory was 112.2MB in the beginning and 111.2MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-22 15:47:12,228 INFO L158 Benchmark]: RCFGBuilder took 305.70ms. Allocated memory is still 138.4MB. Free memory was 111.2MB in the beginning and 100.6MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 15:47:12,228 INFO L158 Benchmark]: TraceAbstraction took 40841.22ms. Allocated memory was 138.4MB in the beginning and 201.3MB in the end (delta: 62.9MB). Free memory was 100.3MB in the beginning and 126.1MB in the end (delta: -25.7MB). Peak memory consumption was 104.6MB. Max. memory is 16.1GB. [2022-07-22 15:47:12,228 INFO L158 Benchmark]: Witness Printer took 80.04ms. Allocated memory is still 201.3MB. Free memory was 126.1MB in the beginning and 122.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 15:47:12,233 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory was 55.9MB in the beginning and 55.8MB in the end (delta: 83.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.03ms. Allocated memory was 100.7MB in the beginning and 138.4MB in the end (delta: 37.7MB). Free memory was 39.6MB in the beginning and 114.0MB in the end (delta: -74.4MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.01ms. Allocated memory is still 138.4MB. Free memory was 114.0MB in the beginning and 112.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.08ms. Allocated memory is still 138.4MB. Free memory was 112.2MB in the beginning and 111.2MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 305.70ms. Allocated memory is still 138.4MB. Free memory was 111.2MB in the beginning and 100.6MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 40841.22ms. Allocated memory was 138.4MB in the beginning and 201.3MB in the end (delta: 62.9MB). Free memory was 100.3MB in the beginning and 126.1MB in the end (delta: -25.7MB). Peak memory consumption was 104.6MB. Max. memory is 16.1GB. * Witness Printer took 80.04ms. Allocated memory is still 201.3MB. Free memory was 126.1MB in the beginning and 122.9MB in the end (delta: 3.1MB). 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: 17]: 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 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.8s, OverallIterations: 15, TraceHistogramMax: 23, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 16.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 202 SdHoareTripleChecker+Valid, 14.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 1530 SdHoareTripleChecker+Invalid, 14.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1013 mSDsCounter, 320 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2088 IncrementalHoareTripleChecker+Invalid, 2410 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 320 mSolverCounterUnsat, 517 mSDtfsCounter, 2088 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1373 GetRequests, 1225 SyntacticMatches, 13 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=12, InterpolantAutomatonStates: 107, 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, 15 MinimizatonAttempts, 54 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 65 PreInvPairs, 111 NumberOfFragments, 944 HoareAnnotationTreeSize, 65 FomulaSimplifications, 12388 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 14 FomulaSimplificationsInter, 16431 FormulaSimplificationTreeSizeReductionInter, 3.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 15.1s InterpolantComputationTime, 865 NumberOfCodeBlocks, 677 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1182 ConstructedInterpolants, 0 QuantifiedInterpolants, 5690 SizeOfPredicates, 31 NumberOfNonLiveVariables, 1687 ConjunctsInSsa, 243 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 5626/5874 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: 33]: Loop Invariant Derived loop invariant: (((((cond == 1 && n * n * n == x) && y == 3 * n + 3 * (n * n) + 1) && a <= 50) && z == 6 + 6 * n) && n <= a + 1) && 0 <= a - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-22 15:47:12,249 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