./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound100.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 a165119083555083db5c980d3f2d1b5574014aa8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 05:52:13,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 05:52:13,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 05:52:13,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 05:52:13,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 05:52:13,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 05:52:13,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 05:52:14,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 05:52:14,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 05:52:14,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 05:52:14,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 05:52:14,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 05:52:14,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 05:52:14,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 05:52:14,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 05:52:14,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 05:52:14,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 05:52:14,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 05:52:14,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 05:52:14,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 05:52:14,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 05:52:14,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 05:52:14,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 05:52:14,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 05:52:14,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 05:52:14,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 05:52:14,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 05:52:14,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 05:52:14,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 05:52:14,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 05:52:14,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 05:52:14,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 05:52:14,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 05:52:14,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 05:52:14,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 05:52:14,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 05:52:14,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 05:52:14,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 05:52:14,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 05:52:14,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 05:52:14,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 05:52:14,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 05:52:14,049 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 05:52:14,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 05:52:14,050 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 05:52:14,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 05:52:14,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 05:52:14,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 05:52:14,052 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 05:52:14,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 05:52:14,052 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 05:52:14,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 05:52:14,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 05:52:14,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 05:52:14,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 05:52:14,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 05:52:14,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 05:52:14,053 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 05:52:14,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 05:52:14,054 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 05:52:14,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 05:52:14,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 05:52:14,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 05:52:14,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 05:52:14,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 05:52:14,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 05:52:14,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 05:52:14,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 05:52:14,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 05:52:14,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 05:52:14,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 05:52:14,055 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 05:52:14,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a165119083555083db5c980d3f2d1b5574014aa8 [2021-08-26 05:52:14,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 05:52:14,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 05:52:14,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 05:52:14,313 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 05:52:14,313 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 05:52:14,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound100.c [2021-08-26 05:52:14,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/724e6644a/5b65daafa641463ba0720d2d8d0beba2/FLAGb2e742b51 [2021-08-26 05:52:14,732 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 05:52:14,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound100.c [2021-08-26 05:52:14,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/724e6644a/5b65daafa641463ba0720d2d8d0beba2/FLAGb2e742b51 [2021-08-26 05:52:14,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/724e6644a/5b65daafa641463ba0720d2d8d0beba2 [2021-08-26 05:52:14,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 05:52:14,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 05:52:14,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 05:52:14,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 05:52:14,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 05:52:14,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:52:14" (1/1) ... [2021-08-26 05:52:14,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b980354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:52:14, skipping insertion in model container [2021-08-26 05:52:14,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:52:14" (1/1) ... [2021-08-26 05:52:14,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 05:52:14,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 05:52:14,857 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound100.c[489,502] [2021-08-26 05:52:14,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 05:52:14,873 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 05:52:14,881 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound100.c[489,502] [2021-08-26 05:52:14,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 05:52:14,895 INFO L208 MainTranslator]: Completed translation [2021-08-26 05:52:14,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:52:14 WrapperNode [2021-08-26 05:52:14,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 05:52:14,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 05:52:14,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 05:52:14,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 05:52:14,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:52:14" (1/1) ... [2021-08-26 05:52:14,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:52:14" (1/1) ... [2021-08-26 05:52:14,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 05:52:14,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 05:52:14,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 05:52:14,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 05:52:14,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:52:14" (1/1) ... [2021-08-26 05:52:14,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:52:14" (1/1) ... [2021-08-26 05:52:14,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:52:14" (1/1) ... [2021-08-26 05:52:14,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:52:14" (1/1) ... [2021-08-26 05:52:14,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:52:14" (1/1) ... [2021-08-26 05:52:14,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:52:14" (1/1) ... [2021-08-26 05:52:14,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:52:14" (1/1) ... [2021-08-26 05:52:14,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 05:52:14,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 05:52:14,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 05:52:14,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 05:52:14,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:52:14" (1/1) ... [2021-08-26 05:52:14,986 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 05:52:14,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:15,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 05:52:15,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 05:52:15,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 05:52:15,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 05:52:15,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 05:52:15,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 05:52:15,336 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 05:52:15,337 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-08-26 05:52:15,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:52:15 BoogieIcfgContainer [2021-08-26 05:52:15,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 05:52:15,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 05:52:15,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 05:52:15,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 05:52:15,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 05:52:14" (1/3) ... [2021-08-26 05:52:15,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4982bb9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:52:15, skipping insertion in model container [2021-08-26 05:52:15,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:52:14" (2/3) ... [2021-08-26 05:52:15,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4982bb9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:52:15, skipping insertion in model container [2021-08-26 05:52:15,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:52:15" (3/3) ... [2021-08-26 05:52:15,348 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound100.c [2021-08-26 05:52:15,352 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 05:52:15,352 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-26 05:52:15,396 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 05:52:15,405 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 05:52:15,406 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-26 05:52:15,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 43 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:15,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 05:52:15,424 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:15,424 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:15,425 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:15,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:15,429 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2021-08-26 05:52:15,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:15,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339607986] [2021-08-26 05:52:15,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:15,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:52:15,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:15,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:15,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339607986] [2021-08-26 05:52:15,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339607986] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:52:15,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:52:15,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 05:52:15,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783023308] [2021-08-26 05:52:15,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 05:52:15,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:15,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 05:52:15,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 05:52:15,603 INFO L87 Difference]: Start difference. First operand has 44 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 43 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:15,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:15,622 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2021-08-26 05:52:15,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 05:52:15,623 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-26 05:52:15,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:15,628 INFO L225 Difference]: With dead ends: 85 [2021-08-26 05:52:15,628 INFO L226 Difference]: Without dead ends: 40 [2021-08-26 05:52:15,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 05:52:15,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-26 05:52:15,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-08-26 05:52:15,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:15,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-08-26 05:52:15,655 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 13 [2021-08-26 05:52:15,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:15,656 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-08-26 05:52:15,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:15,656 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-08-26 05:52:15,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 05:52:15,657 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:15,657 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:15,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 05:52:15,658 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:15,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:15,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2021-08-26 05:52:15,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:15,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204156490] [2021-08-26 05:52:15,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:15,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:15,693 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:15,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372022722] [2021-08-26 05:52:15,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:15,703 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:15,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:15,708 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:15,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 05:52:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:52:15,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 05:52:15,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:15,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:15,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204156490] [2021-08-26 05:52:15,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:15,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372022722] [2021-08-26 05:52:15,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372022722] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:52:15,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:52:15,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:52:15,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965454861] [2021-08-26 05:52:15,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:52:15,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:15,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:52:15,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:52:15,885 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:15,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:15,982 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2021-08-26 05:52:15,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:52:15,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-26 05:52:15,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:15,983 INFO L225 Difference]: With dead ends: 70 [2021-08-26 05:52:15,983 INFO L226 Difference]: Without dead ends: 66 [2021-08-26 05:52:15,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:52:15,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-26 05:52:15,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2021-08-26 05:52:15,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.297872340425532) internal successors, (61), 53 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:15,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2021-08-26 05:52:16,000 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 13 [2021-08-26 05:52:16,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:16,001 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2021-08-26 05:52:16,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:16,006 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2021-08-26 05:52:16,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 05:52:16,006 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:16,006 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:16,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:16,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:16,227 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:16,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:16,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1454243009, now seen corresponding path program 1 times [2021-08-26 05:52:16,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:16,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119596929] [2021-08-26 05:52:16,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:16,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:16,239 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:16,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544209104] [2021-08-26 05:52:16,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:16,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:16,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:16,249 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:16,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 05:52:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:52:16,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-26 05:52:16,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:16,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:16,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119596929] [2021-08-26 05:52:16,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:16,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544209104] [2021-08-26 05:52:16,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544209104] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:52:16,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:52:16,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-26 05:52:16,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150593198] [2021-08-26 05:52:16,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:52:16,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:16,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:52:16,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:16,587 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:16,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:16,770 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2021-08-26 05:52:16,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 05:52:16,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-26 05:52:16,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:16,775 INFO L225 Difference]: With dead ends: 66 [2021-08-26 05:52:16,775 INFO L226 Difference]: Without dead ends: 64 [2021-08-26 05:52:16,776 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 147.4ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-08-26 05:52:16,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-26 05:52:16,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2021-08-26 05:52:16,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 53 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:16,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2021-08-26 05:52:16,791 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 15 [2021-08-26 05:52:16,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:16,792 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2021-08-26 05:52:16,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:16,792 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2021-08-26 05:52:16,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 05:52:16,793 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:16,793 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:16,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:17,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-26 05:52:17,012 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:17,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:17,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1663317220, now seen corresponding path program 1 times [2021-08-26 05:52:17,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:17,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753371023] [2021-08-26 05:52:17,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:17,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:17,023 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:17,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449920445] [2021-08-26 05:52:17,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:17,023 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:17,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:17,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:17,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 05:52:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:52:17,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-26 05:52:17,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:17,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:17,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:17,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753371023] [2021-08-26 05:52:17,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:17,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449920445] [2021-08-26 05:52:17,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449920445] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:52:17,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:52:17,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-26 05:52:17,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104426716] [2021-08-26 05:52:17,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:52:17,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:17,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:52:17,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:17,383 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:17,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:17,521 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2021-08-26 05:52:17,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 05:52:17,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-08-26 05:52:17,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:17,525 INFO L225 Difference]: With dead ends: 100 [2021-08-26 05:52:17,525 INFO L226 Difference]: Without dead ends: 92 [2021-08-26 05:52:17,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 105.7ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-08-26 05:52:17,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-08-26 05:52:17,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2021-08-26 05:52:17,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 73 states have (on average 1.3013698630136987) internal successors, (95), 79 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:17,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 95 transitions. [2021-08-26 05:52:17,537 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 95 transitions. Word has length 17 [2021-08-26 05:52:17,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:17,538 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 95 transitions. [2021-08-26 05:52:17,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:17,538 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2021-08-26 05:52:17,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 05:52:17,539 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:17,539 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:17,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:17,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:17,749 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:17,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:17,750 INFO L82 PathProgramCache]: Analyzing trace with hash 850548497, now seen corresponding path program 1 times [2021-08-26 05:52:17,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:17,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836350663] [2021-08-26 05:52:17,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:17,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:17,759 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:17,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560268176] [2021-08-26 05:52:17,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:17,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:17,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:17,761 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:17,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 05:52:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:52:17,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-26 05:52:17,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:17,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:17,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836350663] [2021-08-26 05:52:17,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:17,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560268176] [2021-08-26 05:52:17,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560268176] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:52:17,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:52:17,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:52:17,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474889358] [2021-08-26 05:52:17,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:52:17,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:17,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:52:17,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:52:17,925 INFO L87 Difference]: Start difference. First operand 80 states and 95 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:17,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:17,966 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2021-08-26 05:52:17,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:52:17,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-08-26 05:52:17,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:17,968 INFO L225 Difference]: With dead ends: 80 [2021-08-26 05:52:17,968 INFO L226 Difference]: Without dead ends: 78 [2021-08-26 05:52:17,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:52:17,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-08-26 05:52:17,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-08-26 05:52:17,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 72 states have (on average 1.25) internal successors, (90), 77 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 90 transitions. [2021-08-26 05:52:17,975 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 90 transitions. Word has length 20 [2021-08-26 05:52:17,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:17,975 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 90 transitions. [2021-08-26 05:52:17,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:17,975 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 90 transitions. [2021-08-26 05:52:17,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-26 05:52:17,976 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:17,976 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:17,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:18,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:18,181 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:18,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:18,181 INFO L82 PathProgramCache]: Analyzing trace with hash 598788611, now seen corresponding path program 1 times [2021-08-26 05:52:18,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:18,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091879697] [2021-08-26 05:52:18,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:18,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:18,190 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:18,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406058289] [2021-08-26 05:52:18,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:18,190 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:18,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:18,191 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:18,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 05:52:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:52:18,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-26 05:52:18,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:18,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-26 05:52:18,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:18,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091879697] [2021-08-26 05:52:18,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:18,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406058289] [2021-08-26 05:52:18,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406058289] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:18,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:18,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-08-26 05:52:18,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744280163] [2021-08-26 05:52:18,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:52:18,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:18,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:52:18,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:52:18,423 INFO L87 Difference]: Start difference. First operand 78 states and 90 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:18,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:18,470 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2021-08-26 05:52:18,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:52:18,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-08-26 05:52:18,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:18,471 INFO L225 Difference]: With dead ends: 86 [2021-08-26 05:52:18,471 INFO L226 Difference]: Without dead ends: 80 [2021-08-26 05:52:18,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:52:18,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-26 05:52:18,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 72. [2021-08-26 05:52:18,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 71 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:18,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2021-08-26 05:52:18,476 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 21 [2021-08-26 05:52:18,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:18,476 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2021-08-26 05:52:18,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:18,476 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2021-08-26 05:52:18,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-26 05:52:18,477 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:18,477 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:18,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-08-26 05:52:18,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:18,681 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:18,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:18,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1333477300, now seen corresponding path program 1 times [2021-08-26 05:52:18,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:18,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814562133] [2021-08-26 05:52:18,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:18,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:18,689 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:18,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388576538] [2021-08-26 05:52:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:18,690 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:18,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:18,701 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:18,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-26 05:52:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:52:18,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 05:52:18,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:18,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:18,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:18,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814562133] [2021-08-26 05:52:18,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:18,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388576538] [2021-08-26 05:52:18,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388576538] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:52:18,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:52:18,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 05:52:18,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139318493] [2021-08-26 05:52:18,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:52:18,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:18,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:52:18,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:52:18,920 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:19,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:19,019 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2021-08-26 05:52:19,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 05:52:19,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-08-26 05:52:19,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:19,020 INFO L225 Difference]: With dead ends: 80 [2021-08-26 05:52:19,020 INFO L226 Difference]: Without dead ends: 72 [2021-08-26 05:52:19,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 55.1ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:52:19,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-08-26 05:52:19,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2021-08-26 05:52:19,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.2) internal successors, (78), 69 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:19,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2021-08-26 05:52:19,031 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 22 [2021-08-26 05:52:19,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:19,033 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2021-08-26 05:52:19,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:19,033 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2021-08-26 05:52:19,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-26 05:52:19,034 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:19,034 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:19,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:19,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:19,249 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:19,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:19,249 INFO L82 PathProgramCache]: Analyzing trace with hash -89606074, now seen corresponding path program 1 times [2021-08-26 05:52:19,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:19,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738618670] [2021-08-26 05:52:19,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:19,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:19,257 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:19,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [662653410] [2021-08-26 05:52:19,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:19,258 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:19,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:19,259 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:19,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-26 05:52:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:52:19,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-26 05:52:19,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:19,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:19,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738618670] [2021-08-26 05:52:19,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:19,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662653410] [2021-08-26 05:52:19,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662653410] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:19,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:19,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 05:52:19,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648354213] [2021-08-26 05:52:19,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 05:52:19,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:19,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 05:52:19,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:52:19,599 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:19,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:19,690 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2021-08-26 05:52:19,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 05:52:19,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-08-26 05:52:19,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:19,691 INFO L225 Difference]: With dead ends: 105 [2021-08-26 05:52:19,691 INFO L226 Difference]: Without dead ends: 103 [2021-08-26 05:52:19,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.0ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:52:19,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-08-26 05:52:19,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 74. [2021-08-26 05:52:19,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 73 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:19,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2021-08-26 05:52:19,702 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 23 [2021-08-26 05:52:19,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:19,703 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2021-08-26 05:52:19,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:19,703 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2021-08-26 05:52:19,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-26 05:52:19,704 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:19,704 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:19,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:19,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:19,917 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:19,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:19,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1021281049, now seen corresponding path program 1 times [2021-08-26 05:52:19,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:19,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457073862] [2021-08-26 05:52:19,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:19,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:19,926 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:19,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496196852] [2021-08-26 05:52:19,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:19,927 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:19,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:19,928 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:19,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-26 05:52:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:52:20,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-26 05:52:20,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:20,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:20,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:20,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457073862] [2021-08-26 05:52:20,383 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:20,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496196852] [2021-08-26 05:52:20,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496196852] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:20,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:20,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:52:20,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853371236] [2021-08-26 05:52:20,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:52:20,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:20,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:52:20,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:52:20,385 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:20,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:20,501 INFO L93 Difference]: Finished difference Result 116 states and 128 transitions. [2021-08-26 05:52:20,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 05:52:20,502 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-26 05:52:20,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:20,502 INFO L225 Difference]: With dead ends: 116 [2021-08-26 05:52:20,502 INFO L226 Difference]: Without dead ends: 104 [2021-08-26 05:52:20,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 65.2ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:52:20,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-08-26 05:52:20,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2021-08-26 05:52:20,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.1978021978021978) internal successors, (109), 95 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:20,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2021-08-26 05:52:20,509 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 25 [2021-08-26 05:52:20,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:20,509 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2021-08-26 05:52:20,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:20,510 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2021-08-26 05:52:20,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-26 05:52:20,510 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:20,510 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:20,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:20,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-08-26 05:52:20,716 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:20,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:20,717 INFO L82 PathProgramCache]: Analyzing trace with hash 477321350, now seen corresponding path program 1 times [2021-08-26 05:52:20,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:20,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361124964] [2021-08-26 05:52:20,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:20,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:20,724 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:20,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972606369] [2021-08-26 05:52:20,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:20,724 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:20,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:20,727 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:20,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-26 05:52:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:52:20,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-26 05:52:20,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:21,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:21,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361124964] [2021-08-26 05:52:21,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:21,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972606369] [2021-08-26 05:52:21,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972606369] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:21,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:21,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 05:52:21,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474727786] [2021-08-26 05:52:21,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:52:21,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:21,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:52:21,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:52:21,152 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:21,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:21,269 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2021-08-26 05:52:21,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 05:52:21,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-08-26 05:52:21,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:21,271 INFO L225 Difference]: With dead ends: 116 [2021-08-26 05:52:21,271 INFO L226 Difference]: Without dead ends: 106 [2021-08-26 05:52:21,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 46.0ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:52:21,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-08-26 05:52:21,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2021-08-26 05:52:21,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.1938775510204083) internal successors, (117), 102 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:21,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2021-08-26 05:52:21,279 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 29 [2021-08-26 05:52:21,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:21,279 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2021-08-26 05:52:21,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:21,280 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2021-08-26 05:52:21,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-26 05:52:21,281 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:21,281 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:21,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:21,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-26 05:52:21,499 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:21,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:21,500 INFO L82 PathProgramCache]: Analyzing trace with hash 219215494, now seen corresponding path program 2 times [2021-08-26 05:52:21,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:21,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800447547] [2021-08-26 05:52:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:21,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:21,507 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:21,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764857786] [2021-08-26 05:52:21,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:52:21,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:21,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:21,513 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) [2021-08-26 05:52:21,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-26 05:52:21,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:52:21,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:21,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-26 05:52:21,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:21,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:21,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:21,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800447547] [2021-08-26 05:52:21,953 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:21,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764857786] [2021-08-26 05:52:21,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764857786] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:21,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:21,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 05:52:21,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169256219] [2021-08-26 05:52:21,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:52:21,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:21,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:52:21,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:52:21,955 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:22,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:22,058 INFO L93 Difference]: Finished difference Result 131 states and 147 transitions. [2021-08-26 05:52:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 05:52:22,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-08-26 05:52:22,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:22,060 INFO L225 Difference]: With dead ends: 131 [2021-08-26 05:52:22,060 INFO L226 Difference]: Without dead ends: 127 [2021-08-26 05:52:22,060 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 44.4ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:52:22,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-08-26 05:52:22,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 114. [2021-08-26 05:52:22,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.201834862385321) internal successors, (131), 113 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2021-08-26 05:52:22,066 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 29 [2021-08-26 05:52:22,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:22,067 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2021-08-26 05:52:22,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:22,067 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2021-08-26 05:52:22,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-26 05:52:22,067 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:22,067 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:22,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:22,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-08-26 05:52:22,281 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:22,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:22,281 INFO L82 PathProgramCache]: Analyzing trace with hash -855526903, now seen corresponding path program 1 times [2021-08-26 05:52:22,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:22,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388180524] [2021-08-26 05:52:22,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:22,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:22,288 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:22,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851166197] [2021-08-26 05:52:22,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:22,289 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:22,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:22,290 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) [2021-08-26 05:52:22,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-26 05:52:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:52:22,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 38 conjunts are in the unsatisfiable core [2021-08-26 05:52:22,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:23,275 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:23,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:23,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388180524] [2021-08-26 05:52:23,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:23,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851166197] [2021-08-26 05:52:23,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851166197] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:23,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:23,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-26 05:52:23,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988067723] [2021-08-26 05:52:23,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 05:52:23,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:23,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 05:52:23,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:52:23,277 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:23,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:23,881 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2021-08-26 05:52:23,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 05:52:23,882 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-08-26 05:52:23,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:23,883 INFO L225 Difference]: With dead ends: 142 [2021-08-26 05:52:23,883 INFO L226 Difference]: Without dead ends: 140 [2021-08-26 05:52:23,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 250.0ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-08-26 05:52:23,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-08-26 05:52:23,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 114. [2021-08-26 05:52:23,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.1926605504587156) internal successors, (130), 113 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:23,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2021-08-26 05:52:23,890 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 31 [2021-08-26 05:52:23,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:23,890 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2021-08-26 05:52:23,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:23,890 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2021-08-26 05:52:23,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-26 05:52:23,890 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:23,891 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:23,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:24,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-08-26 05:52:24,091 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:24,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:24,091 INFO L82 PathProgramCache]: Analyzing trace with hash 155590347, now seen corresponding path program 2 times [2021-08-26 05:52:24,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:24,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704863299] [2021-08-26 05:52:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:24,092 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:24,108 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:24,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72995721] [2021-08-26 05:52:24,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:52:24,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:24,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:24,114 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) [2021-08-26 05:52:24,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-26 05:52:24,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:52:24,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:24,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 34 conjunts are in the unsatisfiable core [2021-08-26 05:52:24,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:24,871 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:24,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:24,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704863299] [2021-08-26 05:52:24,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:24,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72995721] [2021-08-26 05:52:24,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72995721] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:24,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:24,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:52:24,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817015613] [2021-08-26 05:52:24,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:52:24,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:24,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:52:24,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:24,874 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:25,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:25,170 INFO L93 Difference]: Finished difference Result 148 states and 166 transitions. [2021-08-26 05:52:25,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 05:52:25,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-08-26 05:52:25,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:25,172 INFO L225 Difference]: With dead ends: 148 [2021-08-26 05:52:25,172 INFO L226 Difference]: Without dead ends: 146 [2021-08-26 05:52:25,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 190.5ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-08-26 05:52:25,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-08-26 05:52:25,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 118. [2021-08-26 05:52:25,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 113 states have (on average 1.1858407079646018) internal successors, (134), 117 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:25,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2021-08-26 05:52:25,181 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 31 [2021-08-26 05:52:25,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:25,183 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2021-08-26 05:52:25,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:25,183 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2021-08-26 05:52:25,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-26 05:52:25,183 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:25,183 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:25,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:25,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-26 05:52:25,405 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:25,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:25,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1663177194, now seen corresponding path program 2 times [2021-08-26 05:52:25,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:25,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815908448] [2021-08-26 05:52:25,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:25,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:25,420 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:25,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766417148] [2021-08-26 05:52:25,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:52:25,422 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:25,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:25,423 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) [2021-08-26 05:52:25,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-26 05:52:25,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:52:25,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:25,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 32 conjunts are in the unsatisfiable core [2021-08-26 05:52:25,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:26,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:26,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815908448] [2021-08-26 05:52:26,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:26,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766417148] [2021-08-26 05:52:26,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766417148] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:26,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:26,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:52:26,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509762900] [2021-08-26 05:52:26,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:52:26,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:26,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:52:26,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:26,297 INFO L87 Difference]: Start difference. First operand 118 states and 134 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:26,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:26,657 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2021-08-26 05:52:26,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 05:52:26,658 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-08-26 05:52:26,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:26,659 INFO L225 Difference]: With dead ends: 160 [2021-08-26 05:52:26,659 INFO L226 Difference]: Without dead ends: 148 [2021-08-26 05:52:26,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 98.2ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:52:26,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-08-26 05:52:26,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 126. [2021-08-26 05:52:26,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.1818181818181819) internal successors, (143), 125 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:26,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2021-08-26 05:52:26,668 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 33 [2021-08-26 05:52:26,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:26,668 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2021-08-26 05:52:26,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:26,668 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2021-08-26 05:52:26,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-26 05:52:26,671 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:26,671 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:26,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:26,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-08-26 05:52:26,881 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:26,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:26,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1610721748, now seen corresponding path program 1 times [2021-08-26 05:52:26,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:26,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105858300] [2021-08-26 05:52:26,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:26,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:26,890 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:26,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653239402] [2021-08-26 05:52:26,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:26,890 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:26,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:26,898 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:26,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-26 05:52:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:52:27,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-26 05:52:27,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:27,748 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:27,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:27,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105858300] [2021-08-26 05:52:27,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:27,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653239402] [2021-08-26 05:52:27,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653239402] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:27,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:27,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 05:52:27,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034408503] [2021-08-26 05:52:27,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:52:27,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:27,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:52:27,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:52:27,751 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:27,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:27,936 INFO L93 Difference]: Finished difference Result 159 states and 177 transitions. [2021-08-26 05:52:27,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 05:52:27,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-08-26 05:52:27,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:27,937 INFO L225 Difference]: With dead ends: 159 [2021-08-26 05:52:27,937 INFO L226 Difference]: Without dead ends: 147 [2021-08-26 05:52:27,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 68.7ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:52:27,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-08-26 05:52:27,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2021-08-26 05:52:27,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.1754385964912282) internal successors, (134), 118 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:27,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2021-08-26 05:52:27,944 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 33 [2021-08-26 05:52:27,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:27,945 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2021-08-26 05:52:27,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:27,945 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2021-08-26 05:52:27,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 05:52:27,945 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:27,945 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:27,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:28,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:28,149 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:28,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:28,149 INFO L82 PathProgramCache]: Analyzing trace with hash 130855945, now seen corresponding path program 3 times [2021-08-26 05:52:28,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:28,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019996648] [2021-08-26 05:52:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:28,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:28,156 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:28,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998603070] [2021-08-26 05:52:28,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 05:52:28,157 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:28,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:28,165 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:28,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-26 05:52:28,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 05:52:28,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:28,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-26 05:52:28,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:28,873 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-08-26 05:52:28,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:28,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019996648] [2021-08-26 05:52:28,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:28,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998603070] [2021-08-26 05:52:28,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998603070] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:28,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:28,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:52:28,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616591168] [2021-08-26 05:52:28,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:52:28,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:28,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:52:28,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:52:28,876 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:28,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:28,992 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2021-08-26 05:52:28,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 05:52:28,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-08-26 05:52:28,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:28,993 INFO L225 Difference]: With dead ends: 172 [2021-08-26 05:52:28,993 INFO L226 Difference]: Without dead ends: 162 [2021-08-26 05:52:28,994 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 59.7ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:52:28,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-08-26 05:52:29,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 130. [2021-08-26 05:52:29,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.192) internal successors, (149), 129 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:29,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2021-08-26 05:52:29,002 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 37 [2021-08-26 05:52:29,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:29,002 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2021-08-26 05:52:29,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:29,002 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2021-08-26 05:52:29,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 05:52:29,003 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:29,003 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:29,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:29,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-26 05:52:29,216 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:29,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:29,217 INFO L82 PathProgramCache]: Analyzing trace with hash -127249911, now seen corresponding path program 4 times [2021-08-26 05:52:29,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:29,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264435224] [2021-08-26 05:52:29,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:29,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:29,223 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:29,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [573368803] [2021-08-26 05:52:29,223 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 05:52:29,223 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:29,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:29,225 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:29,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-26 05:52:29,660 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 05:52:29,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:29,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 05:52:29,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:30,029 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:30,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:30,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264435224] [2021-08-26 05:52:30,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:30,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573368803] [2021-08-26 05:52:30,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573368803] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:30,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:30,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:52:30,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179468069] [2021-08-26 05:52:30,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:52:30,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:30,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:52:30,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:52:30,031 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:30,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:30,290 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2021-08-26 05:52:30,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 05:52:30,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-08-26 05:52:30,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:30,292 INFO L225 Difference]: With dead ends: 162 [2021-08-26 05:52:30,292 INFO L226 Difference]: Without dead ends: 158 [2021-08-26 05:52:30,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 64.8ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:52:30,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-08-26 05:52:30,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 142. [2021-08-26 05:52:30,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.1824817518248176) internal successors, (162), 141 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:30,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2021-08-26 05:52:30,302 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2021-08-26 05:52:30,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:30,303 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2021-08-26 05:52:30,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2021-08-26 05:52:30,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 05:52:30,303 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:30,303 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:30,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:30,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-26 05:52:30,505 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:30,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:30,505 INFO L82 PathProgramCache]: Analyzing trace with hash -127309493, now seen corresponding path program 5 times [2021-08-26 05:52:30,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:30,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348157279] [2021-08-26 05:52:30,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:30,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:30,514 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:30,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340647159] [2021-08-26 05:52:30,515 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 05:52:30,515 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:30,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:30,516 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:30,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-26 05:52:31,758 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-26 05:52:31,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:31,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 05:52:31,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:32,146 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:32,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:32,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348157279] [2021-08-26 05:52:32,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:32,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340647159] [2021-08-26 05:52:32,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340647159] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:32,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:32,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:52:32,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144585408] [2021-08-26 05:52:32,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:52:32,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:32,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:52:32,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:52:32,147 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:32,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:32,302 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2021-08-26 05:52:32,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 05:52:32,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-08-26 05:52:32,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:32,303 INFO L225 Difference]: With dead ends: 162 [2021-08-26 05:52:32,303 INFO L226 Difference]: Without dead ends: 152 [2021-08-26 05:52:32,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 74.8ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:52:32,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-08-26 05:52:32,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 142. [2021-08-26 05:52:32,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.1824817518248176) internal successors, (162), 141 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:32,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2021-08-26 05:52:32,312 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2021-08-26 05:52:32,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:32,312 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2021-08-26 05:52:32,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:32,313 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2021-08-26 05:52:32,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 05:52:32,313 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:32,313 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:32,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:32,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-26 05:52:32,523 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:32,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:32,524 INFO L82 PathProgramCache]: Analyzing trace with hash 948563977, now seen corresponding path program 6 times [2021-08-26 05:52:32,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:32,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396265461] [2021-08-26 05:52:32,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:32,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:32,530 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:32,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787857719] [2021-08-26 05:52:32,531 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 05:52:32,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:32,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:32,532 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:32,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-26 05:52:33,032 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-26 05:52:33,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:33,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 05:52:33,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:33,361 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:33,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:33,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396265461] [2021-08-26 05:52:33,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:33,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787857719] [2021-08-26 05:52:33,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787857719] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:33,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:33,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:52:33,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896116748] [2021-08-26 05:52:33,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:52:33,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:33,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:52:33,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:52:33,363 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:33,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:33,582 INFO L93 Difference]: Finished difference Result 170 states and 192 transitions. [2021-08-26 05:52:33,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 05:52:33,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-08-26 05:52:33,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:33,583 INFO L225 Difference]: With dead ends: 170 [2021-08-26 05:52:33,583 INFO L226 Difference]: Without dead ends: 166 [2021-08-26 05:52:33,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 77.2ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:52:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-08-26 05:52:33,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 146. [2021-08-26 05:52:33,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.1843971631205674) internal successors, (167), 145 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:33,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 167 transitions. [2021-08-26 05:52:33,595 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 167 transitions. Word has length 37 [2021-08-26 05:52:33,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:33,595 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 167 transitions. [2021-08-26 05:52:33,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:33,595 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 167 transitions. [2021-08-26 05:52:33,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 05:52:33,595 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:33,595 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:33,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:33,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:33,809 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:33,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:33,809 INFO L82 PathProgramCache]: Analyzing trace with hash 948504395, now seen corresponding path program 7 times [2021-08-26 05:52:33,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:33,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315886860] [2021-08-26 05:52:33,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:33,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:33,815 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:33,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413632757] [2021-08-26 05:52:33,816 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-26 05:52:33,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:33,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:33,817 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:33,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-26 05:52:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:52:34,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 05:52:34,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:34,700 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:34,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:34,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315886860] [2021-08-26 05:52:34,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:34,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413632757] [2021-08-26 05:52:34,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413632757] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:34,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:34,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:52:34,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664404464] [2021-08-26 05:52:34,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:52:34,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:34,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:52:34,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:52:34,702 INFO L87 Difference]: Start difference. First operand 146 states and 167 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:34,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:34,939 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2021-08-26 05:52:34,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 05:52:34,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-08-26 05:52:34,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:34,949 INFO L225 Difference]: With dead ends: 166 [2021-08-26 05:52:34,949 INFO L226 Difference]: Without dead ends: 156 [2021-08-26 05:52:34,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 67.7ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:52:34,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-08-26 05:52:34,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 138. [2021-08-26 05:52:34,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 133 states have (on average 1.1879699248120301) internal successors, (158), 137 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:34,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2021-08-26 05:52:34,958 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 37 [2021-08-26 05:52:34,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:34,958 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2021-08-26 05:52:34,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:34,958 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2021-08-26 05:52:34,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 05:52:34,959 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:34,959 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:34,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:35,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:35,173 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:35,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:35,173 INFO L82 PathProgramCache]: Analyzing trace with hash 690398539, now seen corresponding path program 8 times [2021-08-26 05:52:35,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:35,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122067310] [2021-08-26 05:52:35,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:35,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:35,179 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:35,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340541539] [2021-08-26 05:52:35,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:52:35,180 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:35,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:35,184 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:35,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-08-26 05:52:35,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:52:35,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:35,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 05:52:35,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:36,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:36,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122067310] [2021-08-26 05:52:36,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:36,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340541539] [2021-08-26 05:52:36,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340541539] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:36,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:36,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:52:36,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480401845] [2021-08-26 05:52:36,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:52:36,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:36,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:52:36,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:52:36,120 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:36,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:36,305 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2021-08-26 05:52:36,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 05:52:36,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-08-26 05:52:36,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:36,306 INFO L225 Difference]: With dead ends: 166 [2021-08-26 05:52:36,306 INFO L226 Difference]: Without dead ends: 162 [2021-08-26 05:52:36,307 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 63.5ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:52:36,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-08-26 05:52:36,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 142. [2021-08-26 05:52:36,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.1897810218978102) internal successors, (163), 141 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:36,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 163 transitions. [2021-08-26 05:52:36,316 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 163 transitions. Word has length 37 [2021-08-26 05:52:36,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:36,317 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 163 transitions. [2021-08-26 05:52:36,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:36,317 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 163 transitions. [2021-08-26 05:52:36,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-26 05:52:36,317 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:36,317 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:36,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:36,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-08-26 05:52:36,529 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:36,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:36,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1198667980, now seen corresponding path program 2 times [2021-08-26 05:52:36,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:36,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233995415] [2021-08-26 05:52:36,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:36,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:36,536 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:36,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [970909323] [2021-08-26 05:52:36,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:52:36,537 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:36,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:36,537 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:36,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-08-26 05:52:37,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:52:37,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:37,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 43 conjunts are in the unsatisfiable core [2021-08-26 05:52:37,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:37,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:37,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233995415] [2021-08-26 05:52:37,811 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:37,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970909323] [2021-08-26 05:52:37,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970909323] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:37,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:37,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-08-26 05:52:37,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082703795] [2021-08-26 05:52:37,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 05:52:37,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:37,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 05:52:37,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:52:37,813 INFO L87 Difference]: Start difference. First operand 142 states and 163 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:39,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:39,016 INFO L93 Difference]: Finished difference Result 178 states and 201 transitions. [2021-08-26 05:52:39,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 05:52:39,018 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-26 05:52:39,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:39,019 INFO L225 Difference]: With dead ends: 178 [2021-08-26 05:52:39,019 INFO L226 Difference]: Without dead ends: 176 [2021-08-26 05:52:39,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 229.9ms TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-08-26 05:52:39,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-08-26 05:52:39,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 146. [2021-08-26 05:52:39,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.1843971631205674) internal successors, (167), 145 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:39,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 167 transitions. [2021-08-26 05:52:39,030 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 167 transitions. Word has length 39 [2021-08-26 05:52:39,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:39,030 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 167 transitions. [2021-08-26 05:52:39,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:39,030 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 167 transitions. [2021-08-26 05:52:39,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-26 05:52:39,031 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:39,031 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:39,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-08-26 05:52:39,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-08-26 05:52:39,231 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:39,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:39,232 INFO L82 PathProgramCache]: Analyzing trace with hash -2085182066, now seen corresponding path program 3 times [2021-08-26 05:52:39,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:39,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207601136] [2021-08-26 05:52:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:39,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:39,238 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:39,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238427340] [2021-08-26 05:52:39,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 05:52:39,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:39,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:39,240 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:39,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-26 05:52:39,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-26 05:52:39,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:39,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-26 05:52:39,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:40,114 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-26 05:52:40,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:40,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207601136] [2021-08-26 05:52:40,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:40,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238427340] [2021-08-26 05:52:40,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238427340] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:40,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:40,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:52:40,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723403524] [2021-08-26 05:52:40,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:52:40,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:40,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:52:40,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:52:40,115 INFO L87 Difference]: Start difference. First operand 146 states and 167 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:40,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:40,594 INFO L93 Difference]: Finished difference Result 146 states and 167 transitions. [2021-08-26 05:52:40,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:52:40,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-26 05:52:40,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:40,595 INFO L225 Difference]: With dead ends: 146 [2021-08-26 05:52:40,595 INFO L226 Difference]: Without dead ends: 132 [2021-08-26 05:52:40,595 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 59.8ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:40,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-08-26 05:52:40,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 91. [2021-08-26 05:52:40,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 89 states have (on average 1.1123595505617978) internal successors, (99), 90 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:40,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2021-08-26 05:52:40,603 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 39 [2021-08-26 05:52:40,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:40,603 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2021-08-26 05:52:40,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:40,603 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2021-08-26 05:52:40,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-26 05:52:40,604 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:40,604 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:40,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-08-26 05:52:40,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:40,809 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:40,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:40,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1388479860, now seen corresponding path program 9 times [2021-08-26 05:52:40,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:40,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990929763] [2021-08-26 05:52:40,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:40,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:40,817 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:40,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975598503] [2021-08-26 05:52:40,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 05:52:40,818 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:40,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:40,818 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:40,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-26 05:52:41,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 05:52:41,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:41,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-26 05:52:41,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-08-26 05:52:41,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:41,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990929763] [2021-08-26 05:52:41,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:41,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975598503] [2021-08-26 05:52:41,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975598503] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:41,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:41,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:52:41,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560886872] [2021-08-26 05:52:41,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:52:41,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:41,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:52:41,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:41,831 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:42,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:42,509 INFO L93 Difference]: Finished difference Result 132 states and 143 transitions. [2021-08-26 05:52:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 05:52:42,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-08-26 05:52:42,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:42,510 INFO L225 Difference]: With dead ends: 132 [2021-08-26 05:52:42,510 INFO L226 Difference]: Without dead ends: 122 [2021-08-26 05:52:42,510 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 240.3ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-08-26 05:52:42,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-08-26 05:52:42,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 99. [2021-08-26 05:52:42,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 97 states have (on average 1.1134020618556701) internal successors, (108), 98 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:42,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2021-08-26 05:52:42,520 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 45 [2021-08-26 05:52:42,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:42,520 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2021-08-26 05:52:42,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:42,520 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2021-08-26 05:52:42,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-26 05:52:42,520 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:42,520 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:42,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-08-26 05:52:42,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:42,721 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:42,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:42,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1388539442, now seen corresponding path program 10 times [2021-08-26 05:52:42,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:42,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866836907] [2021-08-26 05:52:42,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:42,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:42,728 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:42,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586427546] [2021-08-26 05:52:42,729 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 05:52:42,729 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:42,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:42,730 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:42,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-08-26 05:52:43,457 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 05:52:43,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:43,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 05:52:43,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:43,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:43,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866836907] [2021-08-26 05:52:43,890 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:43,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586427546] [2021-08-26 05:52:43,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586427546] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:43,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:43,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:52:43,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153687904] [2021-08-26 05:52:43,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:52:43,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:43,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:52:43,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:43,891 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:44,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:44,084 INFO L93 Difference]: Finished difference Result 133 states and 145 transitions. [2021-08-26 05:52:44,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 05:52:44,084 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-08-26 05:52:44,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:44,085 INFO L225 Difference]: With dead ends: 133 [2021-08-26 05:52:44,085 INFO L226 Difference]: Without dead ends: 123 [2021-08-26 05:52:44,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 85.8ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:52:44,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-08-26 05:52:44,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 107. [2021-08-26 05:52:44,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 105 states have (on average 1.1142857142857143) internal successors, (117), 106 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:44,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2021-08-26 05:52:44,096 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 45 [2021-08-26 05:52:44,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:44,097 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2021-08-26 05:52:44,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:44,097 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2021-08-26 05:52:44,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-26 05:52:44,097 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:44,097 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:44,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:44,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-08-26 05:52:44,317 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:44,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:44,317 INFO L82 PathProgramCache]: Analyzing trace with hash -312665972, now seen corresponding path program 11 times [2021-08-26 05:52:44,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:44,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356607116] [2021-08-26 05:52:44,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:44,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:44,324 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:44,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [643158036] [2021-08-26 05:52:44,324 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 05:52:44,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:44,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:44,330 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:44,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-08-26 05:52:45,488 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-08-26 05:52:45,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:45,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 05:52:45,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:45,942 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:45,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:45,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356607116] [2021-08-26 05:52:45,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:45,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643158036] [2021-08-26 05:52:45,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643158036] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:45,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:45,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:52:45,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958291505] [2021-08-26 05:52:45,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:52:45,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:45,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:52:45,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:45,944 INFO L87 Difference]: Start difference. First operand 107 states and 117 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:46,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:46,175 INFO L93 Difference]: Finished difference Result 141 states and 154 transitions. [2021-08-26 05:52:46,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 05:52:46,175 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-08-26 05:52:46,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:46,176 INFO L225 Difference]: With dead ends: 141 [2021-08-26 05:52:46,176 INFO L226 Difference]: Without dead ends: 131 [2021-08-26 05:52:46,176 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 85.6ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:52:46,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-08-26 05:52:46,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2021-08-26 05:52:46,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 113 states have (on average 1.1150442477876106) internal successors, (126), 114 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:46,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2021-08-26 05:52:46,189 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 45 [2021-08-26 05:52:46,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:46,189 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2021-08-26 05:52:46,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:46,189 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2021-08-26 05:52:46,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-26 05:52:46,190 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:46,190 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:46,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:46,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-08-26 05:52:46,393 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:46,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:46,393 INFO L82 PathProgramCache]: Analyzing trace with hash -312725554, now seen corresponding path program 12 times [2021-08-26 05:52:46,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:46,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882891564] [2021-08-26 05:52:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:46,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:46,402 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:46,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519678893] [2021-08-26 05:52:46,402 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 05:52:46,402 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:46,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:46,404 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:46,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-08-26 05:52:47,763 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-08-26 05:52:47,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:47,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-26 05:52:47,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:48,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:48,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882891564] [2021-08-26 05:52:48,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:48,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519678893] [2021-08-26 05:52:48,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519678893] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:48,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:48,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:52:48,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574092651] [2021-08-26 05:52:48,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:52:48,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:48,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:52:48,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:48,207 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:48,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:48,481 INFO L93 Difference]: Finished difference Result 157 states and 172 transitions. [2021-08-26 05:52:48,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 05:52:48,481 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-08-26 05:52:48,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:48,482 INFO L225 Difference]: With dead ends: 157 [2021-08-26 05:52:48,482 INFO L226 Difference]: Without dead ends: 147 [2021-08-26 05:52:48,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:52:48,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-08-26 05:52:48,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 131. [2021-08-26 05:52:48,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 129 states have (on average 1.1162790697674418) internal successors, (144), 130 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:48,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 144 transitions. [2021-08-26 05:52:48,498 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 144 transitions. Word has length 45 [2021-08-26 05:52:48,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:48,498 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 144 transitions. [2021-08-26 05:52:48,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:48,499 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 144 transitions. [2021-08-26 05:52:48,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-26 05:52:48,499 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:48,499 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:48,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:48,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-08-26 05:52:48,701 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:48,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:48,701 INFO L82 PathProgramCache]: Analyzing trace with hash -570831410, now seen corresponding path program 13 times [2021-08-26 05:52:48,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:48,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520632591] [2021-08-26 05:52:48,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:48,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:48,708 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:48,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404355835] [2021-08-26 05:52:48,709 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-26 05:52:48,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:48,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:48,709 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:48,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-08-26 05:52:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:52:49,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 05:52:49,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:49,986 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:49,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:49,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520632591] [2021-08-26 05:52:49,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:49,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404355835] [2021-08-26 05:52:49,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404355835] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:49,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:49,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:52:49,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839320783] [2021-08-26 05:52:49,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:52:49,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:49,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:52:49,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:49,987 INFO L87 Difference]: Start difference. First operand 131 states and 144 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:50,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:50,214 INFO L93 Difference]: Finished difference Result 157 states and 172 transitions. [2021-08-26 05:52:50,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 05:52:50,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-08-26 05:52:50,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:50,215 INFO L225 Difference]: With dead ends: 157 [2021-08-26 05:52:50,215 INFO L226 Difference]: Without dead ends: 147 [2021-08-26 05:52:50,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 88.2ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:52:50,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-08-26 05:52:50,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 139. [2021-08-26 05:52:50,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 137 states have (on average 1.1167883211678833) internal successors, (153), 138 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:50,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2021-08-26 05:52:50,233 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 45 [2021-08-26 05:52:50,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:50,234 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2021-08-26 05:52:50,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:50,234 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2021-08-26 05:52:50,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-26 05:52:50,234 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:50,234 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:50,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:50,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-08-26 05:52:50,441 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:50,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:50,441 INFO L82 PathProgramCache]: Analyzing trace with hash -570890992, now seen corresponding path program 14 times [2021-08-26 05:52:50,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:50,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738678129] [2021-08-26 05:52:50,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:50,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:50,448 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:50,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314720586] [2021-08-26 05:52:50,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:52:50,449 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:50,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:50,449 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:50,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-08-26 05:52:51,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:52:51,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:51,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 05:52:51,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:51,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:51,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738678129] [2021-08-26 05:52:51,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:51,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314720586] [2021-08-26 05:52:51,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314720586] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:51,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:51,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:52:51,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755346343] [2021-08-26 05:52:51,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:52:51,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:51,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:52:51,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:51,777 INFO L87 Difference]: Start difference. First operand 139 states and 153 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:51,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:51,982 INFO L93 Difference]: Finished difference Result 157 states and 172 transitions. [2021-08-26 05:52:51,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 05:52:51,983 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-08-26 05:52:51,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:51,983 INFO L225 Difference]: With dead ends: 157 [2021-08-26 05:52:51,984 INFO L226 Difference]: Without dead ends: 147 [2021-08-26 05:52:51,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 86.9ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:52:51,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-08-26 05:52:52,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 131. [2021-08-26 05:52:52,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 129 states have (on average 1.1162790697674418) internal successors, (144), 130 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:52,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 144 transitions. [2021-08-26 05:52:52,008 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 144 transitions. Word has length 45 [2021-08-26 05:52:52,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:52,008 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 144 transitions. [2021-08-26 05:52:52,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:52,008 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 144 transitions. [2021-08-26 05:52:52,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-26 05:52:52,010 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:52,010 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:52,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:52,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-08-26 05:52:52,217 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:52,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:52,217 INFO L82 PathProgramCache]: Analyzing trace with hash -620841332, now seen corresponding path program 15 times [2021-08-26 05:52:52,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:52,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979849706] [2021-08-26 05:52:52,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:52,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:52,229 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:52,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [719197178] [2021-08-26 05:52:52,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 05:52:52,230 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:52,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:52,231 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:52:52,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-08-26 05:52:53,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 05:52:53,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:53,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-26 05:52:53,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:53,309 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-08-26 05:52:53,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:53,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979849706] [2021-08-26 05:52:53,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:53,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719197178] [2021-08-26 05:52:53,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719197178] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:53,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:53,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 05:52:53,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116217482] [2021-08-26 05:52:53,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 05:52:53,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:53,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 05:52:53,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:52:53,311 INFO L87 Difference]: Start difference. First operand 131 states and 144 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:53,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:53,367 INFO L93 Difference]: Finished difference Result 131 states and 144 transitions. [2021-08-26 05:52:53,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:52:53,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-08-26 05:52:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:53,368 INFO L225 Difference]: With dead ends: 131 [2021-08-26 05:52:53,368 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 05:52:53,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.3ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:52:53,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 05:52:53,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 05:52:53,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:53,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 05:52:53,369 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2021-08-26 05:52:53,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:53,369 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 05:52:53,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:53,369 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 05:52:53,369 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 05:52:53,371 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:52:53,372 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:52:53,372 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:52:53,372 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:52:53,372 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:52:53,372 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:52:53,372 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:52:53,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-08-26 05:52:53,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:53,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 05:52:53,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:52:53,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:52:53,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:52:53,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:52:53,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:52:54,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:52:54,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:52:54,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:52:54,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:53:01,159 WARN L207 SmtUtils]: Spent 5.75 s on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-08-26 05:53:09,384 WARN L207 SmtUtils]: Spent 6.45 s on a formula simplification. DAG size of input: 204 DAG size of output: 33 [2021-08-26 05:53:27,501 WARN L207 SmtUtils]: Spent 14.18 s on a formula simplification. DAG size of input: 161 DAG size of output: 44 [2021-08-26 05:53:29,401 INFO L857 garLoopResultBuilder]: For program point L35-2(lines 35 52) no Hoare annotation was computed. [2021-08-26 05:53:29,401 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:53:29,402 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:53:29,402 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 100) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (<= ULTIMATE.start_main_~x~0 100)) [2021-08-26 05:53:29,402 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:53:29,402 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 100) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (<= ULTIMATE.start_main_~x~0 100)) [2021-08-26 05:53:29,402 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:53:29,402 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 40 41) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 100) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (<= ULTIMATE.start_main_~x~0 100)) [2021-08-26 05:53:29,402 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:53:29,403 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 10 16) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 100) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (<= ULTIMATE.start_main_~x~0 100)) [2021-08-26 05:53:29,403 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:53:29,403 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:53:29,403 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 05:53:29,403 INFO L853 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= ULTIMATE.start_main_~y~0 100)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (= ULTIMATE.start_main_~s~0 1)) (.cse6 (<= 1 ULTIMATE.start_main_~x~0)) (.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse7 (<= ULTIMATE.start_main_~x~0 100)) (.cse8 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~r~0 0) .cse5 .cse6 .cse7 .cse8) (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) .cse0 (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 .cse3 .cse6 .cse9 (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) .cse7) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse9 .cse7 .cse8))) [2021-08-26 05:53:29,403 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 05:53:29,403 INFO L857 garLoopResultBuilder]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:53:29,403 INFO L853 garLoopResultBuilder]: At program point L11-17(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (<= ULTIMATE.start_main_~y~0 100)) (.cse3 (<= 1 ULTIMATE.start_main_~x~0)) (.cse4 (<= ULTIMATE.start_main_~x~0 100))) (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) .cse4) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~s~0 1) .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-08-26 05:53:29,404 INFO L857 garLoopResultBuilder]: For program point L11-18(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:53:29,404 INFO L860 garLoopResultBuilder]: At program point L11-20(lines 10 16) the Hoare annotation is: true [2021-08-26 05:53:29,404 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:53:29,404 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:53:29,404 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:53:29,404 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:53:29,404 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:53:29,404 INFO L857 garLoopResultBuilder]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:53:29,404 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:53:29,405 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:53:29,405 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:53:29,405 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:53:29,405 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-08-26 05:53:29,405 INFO L857 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-08-26 05:53:29,405 INFO L857 garLoopResultBuilder]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2021-08-26 05:53:29,405 INFO L857 garLoopResultBuilder]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2021-08-26 05:53:29,405 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 05:53:29,405 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:53:29,406 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-08-26 05:53:29,406 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-08-26 05:53:29,406 INFO L857 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2021-08-26 05:53:29,406 INFO L857 garLoopResultBuilder]: For program point L8-6(line 8) no Hoare annotation was computed. [2021-08-26 05:53:29,406 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 05:53:29,406 INFO L860 garLoopResultBuilder]: At program point L58(lines 18 59) the Hoare annotation is: true [2021-08-26 05:53:29,406 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:53:29,406 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 51) no Hoare annotation was computed. [2021-08-26 05:53:29,406 INFO L853 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (<= ULTIMATE.start_main_~y~0 100)) (.cse3 (<= 1 ULTIMATE.start_main_~x~0)) (.cse4 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (.cse5 (<= ULTIMATE.start_main_~x~0 100))) (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) .cse0 (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 (= ULTIMATE.start_main_~p~0 1) .cse1 .cse2 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-08-26 05:53:29,409 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 05:53:29,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 05:53:29 BoogieIcfgContainer [2021-08-26 05:53:29,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 05:53:29,422 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 05:53:29,423 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 05:53:29,423 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 05:53:29,423 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:52:15" (3/4) ... [2021-08-26 05:53:29,425 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 05:53:29,432 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-08-26 05:53:29,433 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 05:53:29,433 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 05:53:29,433 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 05:53:29,456 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 05:53:29,456 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 05:53:29,457 INFO L168 Benchmark]: Toolchain (without parser) took 74699.51 ms. Allocated memory was 60.8 MB in the beginning and 570.4 MB in the end (delta: 509.6 MB). Free memory was 40.1 MB in the beginning and 236.9 MB in the end (delta: -196.8 MB). Peak memory consumption was 310.8 MB. Max. memory is 16.1 GB. [2021-08-26 05:53:29,457 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 43.3 MB in the end (delta: 43.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 05:53:29,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 136.84 ms. Allocated memory is still 60.8 MB. Free memory was 39.8 MB in the beginning and 29.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-26 05:53:29,458 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.35 ms. Allocated memory is still 60.8 MB. Free memory was 29.9 MB in the beginning and 44.4 MB in the end (delta: -14.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-26 05:53:29,458 INFO L168 Benchmark]: Boogie Preprocessor took 15.03 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 43.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 05:53:29,458 INFO L168 Benchmark]: RCFGBuilder took 358.51 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 43.0 MB in the beginning and 55.5 MB in the end (delta: -12.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2021-08-26 05:53:29,458 INFO L168 Benchmark]: TraceAbstraction took 74083.07 ms. Allocated memory was 73.4 MB in the beginning and 570.4 MB in the end (delta: 497.0 MB). Free memory was 55.2 MB in the beginning and 241.1 MB in the end (delta: -185.9 MB). Peak memory consumption was 410.7 MB. Max. memory is 16.1 GB. [2021-08-26 05:53:29,459 INFO L168 Benchmark]: Witness Printer took 33.92 ms. Allocated memory is still 570.4 MB. Free memory was 241.1 MB in the beginning and 236.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 05:53:29,460 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 43.3 MB in the end (delta: 43.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 136.84 ms. Allocated memory is still 60.8 MB. Free memory was 39.8 MB in the beginning and 29.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.35 ms. Allocated memory is still 60.8 MB. Free memory was 29.9 MB in the beginning and 44.4 MB in the end (delta: -14.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.03 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 43.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 358.51 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 43.0 MB in the beginning and 55.5 MB in the end (delta: -12.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 74083.07 ms. Allocated memory was 73.4 MB in the beginning and 570.4 MB in the end (delta: 497.0 MB). Free memory was 55.2 MB in the beginning and 241.1 MB in the end (delta: -185.9 MB). Peak memory consumption was 410.7 MB. Max. memory is 16.1 GB. * Witness Printer took 33.92 ms. Allocated memory is still 570.4 MB. Free memory was 241.1 MB in the beginning and 236.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 74015.2ms, OverallIterations: 30, TraceHistogramMax: 5, EmptinessCheckTime: 26.1ms, AutomataDifference: 7321.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 35827.8ms, InitialAbstractionConstructionTime: 9.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1053 SDtfs, 1046 SDslu, 3233 SDs, 0 SdLazy, 4208 SolverSat, 256 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4751.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1033 GetRequests, 787 SyntacticMatches, 1 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 2548.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=19, InterpolantAutomatonStates: 261, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 303.4ms AutomataMinimizationTime, 30 MinimizatonAttempts, 483 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 105 NumberOfFragments, 454 HoareAnnotationTreeSize, 9 FomulaSimplifications, 648198 FormulaSimplificationTreeSizeReduction, 688.5ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 307448 FormulaSimplificationTreeSizeReductionInter, 35131.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 193.1ms SsaConstructionTime, 2121.6ms SatisfiabilityAnalysisTime, 9817.3ms InterpolantComputationTime, 970 NumberOfCodeBlocks, 908 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 940 ConstructedInterpolants, 0 QuantifiedInterpolants, 10747 SizeOfPredicates, 212 NumberOfNonLiveVariables, 3661 ConjunctsInSsa, 669 ConjunctsInUnsatCore, 30 InterpolantComputations, 6 PerfectInterpolantSequences, 147/752 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 7 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((s * y + q * x == b && cond == 1) && 1 <= y) && y <= 100) && 1 <= x) && b == a) && b == r * y + p * x) && x <= 100) || (((((((cond == 1 && 1 <= y) && y <= 100) && q == 0) && s == 1) && 1 <= x) && x <= 100) && b == y) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && y <= 100) && 1 <= x) && a == r * y + p * x) && x <= 100 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && y <= 100) && 1 <= x) && a == r * y + p * x) && x <= 100) || ((((((((((cond == 1 && p == 1) && 1 <= y) && y <= 100) && q == 0) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && x <= 100) && b == y) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && y <= 100) && 1 <= x) && a == r * y + p * x) && x <= 100 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && y <= 100) && 1 <= x) && b == a) && b == r * y + p * x) && x <= 100 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((cond == 1 && a == x) && p == 1) && 1 <= y) && y <= 100) && q == 0) && r == 0) && s == 1) && 1 <= x) && x <= 100) && b == y) || (((((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && y <= 100) && 1 <= x) && b == a) && b == r * y + p * x) && x <= 100)) || (((((((((cond == 1 && p == 1) && 1 <= y) && y <= 100) && q == 0) && s == 1) && 1 <= x) && b == a) && x <= 100) && b == y) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && y <= 100) && 1 <= x) && a == r * y + p * x) && x <= 100 RESULT: Ultimate proved your program to be correct! [2021-08-26 05:53:29,489 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...