./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.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/cohencu-ll_valuebound1.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 72afcb013d4be8f718c590645a60b94e1fda76b6 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 05:05:51,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 05:05:51,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 05:05:51,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 05:05:51,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 05:05:51,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 05:05:51,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 05:05:51,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 05:05:51,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 05:05:51,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 05:05:51,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 05:05:51,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 05:05:51,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 05:05:51,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 05:05:51,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 05:05:51,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 05:05:51,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 05:05:51,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 05:05:51,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 05:05:51,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 05:05:51,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 05:05:51,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 05:05:51,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 05:05:51,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 05:05:51,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 05:05:51,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 05:05:51,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 05:05:51,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 05:05:51,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 05:05:51,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 05:05:51,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 05:05:51,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 05:05:51,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 05:05:51,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 05:05:51,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 05:05:51,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 05:05:51,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 05:05:51,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 05:05:51,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 05:05:51,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 05:05:51,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 05:05:51,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 05:05:51,911 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 05:05:51,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 05:05:51,912 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 05:05:51,912 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 05:05:51,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 05:05:51,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 05:05:51,914 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 05:05:51,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 05:05:51,914 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 05:05:51,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 05:05:51,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 05:05:51,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 05:05:51,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 05:05:51,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 05:05:51,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 05:05:51,916 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 05:05:51,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 05:05:51,916 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 05:05:51,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 05:05:51,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 05:05:51,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 05:05:51,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 05:05:51,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 05:05:51,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 05:05:51,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 05:05:51,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 05:05:51,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 05:05:51,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 05:05:51,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 05:05:51,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 05:05:51,923 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72afcb013d4be8f718c590645a60b94e1fda76b6 [2021-08-26 05:05:52,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 05:05:52,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 05:05:52,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 05:05:52,177 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 05:05:52,178 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 05:05:52,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c [2021-08-26 05:05:52,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/447f3839a/1ec0bf6648704e5a993ff1a8112c965e/FLAG0c0ec3d81 [2021-08-26 05:05:52,575 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 05:05:52,576 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c [2021-08-26 05:05:52,583 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/447f3839a/1ec0bf6648704e5a993ff1a8112c965e/FLAG0c0ec3d81 [2021-08-26 05:05:52,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/447f3839a/1ec0bf6648704e5a993ff1a8112c965e [2021-08-26 05:05:52,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 05:05:52,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 05:05:52,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 05:05:52,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 05:05:52,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 05:05:52,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:05:52" (1/1) ... [2021-08-26 05:05:52,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79a46f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:05:52, skipping insertion in model container [2021-08-26 05:05:52,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:05:52" (1/1) ... [2021-08-26 05:05:52,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 05:05:52,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 05:05:52,729 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/cohencu-ll_valuebound1.c[596,609] [2021-08-26 05:05:52,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 05:05:52,763 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 05:05:52,777 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/cohencu-ll_valuebound1.c[596,609] [2021-08-26 05:05:52,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 05:05:52,816 INFO L208 MainTranslator]: Completed translation [2021-08-26 05:05:52,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:05:52 WrapperNode [2021-08-26 05:05:52,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 05:05:52,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 05:05:52,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 05:05:52,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 05:05:52,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:05:52" (1/1) ... [2021-08-26 05:05:52,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:05:52" (1/1) ... [2021-08-26 05:05:52,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 05:05:52,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 05:05:52,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 05:05:52,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 05:05:52,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:05:52" (1/1) ... [2021-08-26 05:05:52,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:05:52" (1/1) ... [2021-08-26 05:05:52,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:05:52" (1/1) ... [2021-08-26 05:05:52,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:05:52" (1/1) ... [2021-08-26 05:05:52,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:05:52" (1/1) ... [2021-08-26 05:05:52,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:05:52" (1/1) ... [2021-08-26 05:05:52,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:05:52" (1/1) ... [2021-08-26 05:05:52,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 05:05:52,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 05:05:52,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 05:05:52,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 05:05:52,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:05:52" (1/1) ... [2021-08-26 05:05:52,903 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 05:05:52,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:05:52,926 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 05:05:52,948 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 05:05:52,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 05:05:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_short [2021-08-26 05:05:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 05:05:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 05:05:52,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 05:05:53,268 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 05:05:53,268 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2021-08-26 05:05:53,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:05:53 BoogieIcfgContainer [2021-08-26 05:05:53,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 05:05:53,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 05:05:53,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 05:05:53,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 05:05:53,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 05:05:52" (1/3) ... [2021-08-26 05:05:53,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba2777f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:05:53, skipping insertion in model container [2021-08-26 05:05:53,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:05:52" (2/3) ... [2021-08-26 05:05:53,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba2777f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:05:53, skipping insertion in model container [2021-08-26 05:05:53,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:05:53" (3/3) ... [2021-08-26 05:05:53,274 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound1.c [2021-08-26 05:05:53,281 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 05:05:53,282 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-08-26 05:05:53,320 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 05:05:53,328 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 05:05:53,328 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-08-26 05:05:53,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 52 states have internal predecessors, (67), 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 05:05:53,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 05:05:53,340 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:05:53,340 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:05:53,341 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:05:53,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:05:53,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-08-26 05:05:53,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:05:53,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102054324] [2021-08-26 05:05:53,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:05:53,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:05:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:05:53,482 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 05:05:53,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:05:53,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102054324] [2021-08-26 05:05:53,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102054324] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:05:53,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:05:53,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 05:05:53,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074757698] [2021-08-26 05:05:53,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 05:05:53,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:05:53,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 05:05:53,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 05:05:53,498 INFO L87 Difference]: Start difference. First operand has 53 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 52 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 05:05:53,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:05:53,514 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2021-08-26 05:05:53,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 05:05:53,515 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-08-26 05:05:53,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:05:53,519 INFO L225 Difference]: With dead ends: 103 [2021-08-26 05:05:53,519 INFO L226 Difference]: Without dead ends: 49 [2021-08-26 05:05:53,521 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 05:05:53,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-08-26 05:05:53,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-08-26 05:05:53,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 48 states have internal predecessors, (49), 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 05:05:53,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-08-26 05:05:53,546 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 7 [2021-08-26 05:05:53,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:05:53,547 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-08-26 05:05:53,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 05:05:53,547 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-08-26 05:05:53,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 05:05:53,547 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:05:53,547 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:05:53,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 05:05:53,548 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:05:53,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:05:53,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-08-26 05:05:53,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:05:53,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121224266] [2021-08-26 05:05:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:05:53,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:05:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:05:53,668 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 05:05:53,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:05:53,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121224266] [2021-08-26 05:05:53,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121224266] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:05:53,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:05:53,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:05:53,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052734681] [2021-08-26 05:05:53,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:05:53,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:05:53,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:05:53,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:05:53,672 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 05:05:53,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:05:53,790 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-08-26 05:05:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:05:53,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-08-26 05:05:53,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:05:53,792 INFO L225 Difference]: With dead ends: 50 [2021-08-26 05:05:53,792 INFO L226 Difference]: Without dead ends: 46 [2021-08-26 05:05:53,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:05:53,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-08-26 05:05:53,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-08-26 05:05:53,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 36 states have (on average 1.25) internal successors, (45), 44 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 05:05:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2021-08-26 05:05:53,804 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 7 [2021-08-26 05:05:53,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:05:53,805 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2021-08-26 05:05:53,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 05:05:53,806 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2021-08-26 05:05:53,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 05:05:53,806 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:05:53,806 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:05:53,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 05:05:53,807 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:05:53,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:05:53,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-08-26 05:05:53,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:05:53,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697439071] [2021-08-26 05:05:53,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:05:53,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:05:53,830 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:05:53,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074659337] [2021-08-26 05:05:53,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:05:53,831 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:05:53,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:05:53,837 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 05:05:53,838 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 05:05:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:05:53,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 05:05:53,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:05:53,978 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 05:05:53,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:05:53,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697439071] [2021-08-26 05:05:53,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:05:53,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074659337] [2021-08-26 05:05:53,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074659337] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:05:53,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:05:53,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:05:53,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736797950] [2021-08-26 05:05:53,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:05:53,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:05:53,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:05:53,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:05:53,981 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:05:54,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:05:54,076 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2021-08-26 05:05:54,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:05:54,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-26 05:05:54,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:05:54,077 INFO L225 Difference]: With dead ends: 86 [2021-08-26 05:05:54,077 INFO L226 Difference]: Without dead ends: 84 [2021-08-26 05:05:54,078 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:05:54,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-26 05:05:54,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 49. [2021-08-26 05:05:54,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.225) internal successors, (49), 48 states have internal predecessors, (49), 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 05:05:54,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-08-26 05:05:54,082 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 9 [2021-08-26 05:05:54,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:05:54,082 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-08-26 05:05:54,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:05:54,082 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-08-26 05:05:54,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 05:05:54,082 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:05:54,082 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:05:54,107 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 05:05:54,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:05:54,298 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:05:54,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:05:54,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-08-26 05:05:54,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:05:54,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288219729] [2021-08-26 05:05:54,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:05:54,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:05:54,304 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:05:54,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614735685] [2021-08-26 05:05:54,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:05:54,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:05:54,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:05:54,305 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 05:05:54,307 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 05:05:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:05:54,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 05:05:54,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:05:54,488 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 05:05:54,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:05:54,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288219729] [2021-08-26 05:05:54,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:05:54,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614735685] [2021-08-26 05:05:54,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614735685] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:05:54,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:05:54,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:05:54,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136389585] [2021-08-26 05:05:54,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:05:54,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:05:54,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:05:54,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:05:54,491 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:05:54,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:05:54,585 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2021-08-26 05:05:54,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:05:54,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-26 05:05:54,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:05:54,589 INFO L225 Difference]: With dead ends: 84 [2021-08-26 05:05:54,589 INFO L226 Difference]: Without dead ends: 80 [2021-08-26 05:05:54,589 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:05:54,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-26 05:05:54,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-08-26 05:05:54,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 59 states have internal predecessors, (63), 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 05:05:54,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-08-26 05:05:54,605 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 11 [2021-08-26 05:05:54,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:05:54,605 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-08-26 05:05:54,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:05:54,605 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-08-26 05:05:54,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 05:05:54,605 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:05:54,605 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:05:54,625 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 05:05:54,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-08-26 05:05:54,810 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:05:54,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:05:54,810 INFO L82 PathProgramCache]: Analyzing trace with hash -750282760, now seen corresponding path program 1 times [2021-08-26 05:05:54,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:05:54,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529053384] [2021-08-26 05:05:54,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:05:54,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:05:54,817 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:05:54,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973764660] [2021-08-26 05:05:54,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:05:54,818 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:05:54,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:05:54,819 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 05:05:54,821 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 05:05:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:05:54,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 05:05:54,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:05:55,031 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 05:05:55,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:05:55,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529053384] [2021-08-26 05:05:55,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:05:55,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973764660] [2021-08-26 05:05:55,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973764660] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:05:55,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:05:55,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:05:55,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815211044] [2021-08-26 05:05:55,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:05:55,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:05:55,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:05:55,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:05:55,034 INFO L87 Difference]: Start difference. First operand 60 states and 63 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 05:05:55,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:05:55,153 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2021-08-26 05:05:55,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 05:05:55,154 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 05:05:55,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:05:55,154 INFO L225 Difference]: With dead ends: 81 [2021-08-26 05:05:55,154 INFO L226 Difference]: Without dead ends: 57 [2021-08-26 05:05:55,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:05:55,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-08-26 05:05:55,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2021-08-26 05:05:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 55 states have internal predecessors, (56), 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 05:05:55,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-08-26 05:05:55,158 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 13 [2021-08-26 05:05:55,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:05:55,158 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-08-26 05:05:55,158 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 05:05:55,158 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-08-26 05:05:55,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 05:05:55,158 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:05:55,158 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:05:55,177 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 05:05:55,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:05:55,365 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:05:55,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:05:55,366 INFO L82 PathProgramCache]: Analyzing trace with hash 41188983, now seen corresponding path program 1 times [2021-08-26 05:05:55,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:05:55,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097469345] [2021-08-26 05:05:55,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:05:55,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:05:55,373 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:05:55,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [9752318] [2021-08-26 05:05:55,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:05:55,374 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:05:55,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:05:55,375 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 05:05:55,377 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 05:05:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:05:55,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-26 05:05:55,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:05:55,721 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 05:05:55,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:05:55,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097469345] [2021-08-26 05:05:55,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:05:55,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9752318] [2021-08-26 05:05:55,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9752318] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:05:55,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:05:55,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 05:05:55,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303195391] [2021-08-26 05:05:55,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 05:05:55,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:05:55,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 05:05:55,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:05:55,725 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 05:05:55,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:05:55,854 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2021-08-26 05:05:55,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 05:05:55,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 05:05:55,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:05:55,856 INFO L225 Difference]: With dead ends: 97 [2021-08-26 05:05:55,856 INFO L226 Difference]: Without dead ends: 95 [2021-08-26 05:05:55,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 38.1ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:05:55,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-08-26 05:05:55,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 60. [2021-08-26 05:05:55,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 59 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 05:05:55,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2021-08-26 05:05:55,862 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 20 [2021-08-26 05:05:55,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:05:55,862 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2021-08-26 05:05:55,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 05:05:55,862 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2021-08-26 05:05:55,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-26 05:05:55,863 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:05:55,863 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:05:55,883 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 05:05:56,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:05:56,077 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:05:56,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:05:56,077 INFO L82 PathProgramCache]: Analyzing trace with hash 928063098, now seen corresponding path program 1 times [2021-08-26 05:05:56,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:05:56,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991264799] [2021-08-26 05:05:56,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:05:56,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:05:56,083 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:05:56,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313295555] [2021-08-26 05:05:56,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:05:56,084 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:05:56,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:05:56,084 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 05:05:56,099 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 05:05:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:05:56,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-26 05:05:56,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:05:56,458 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 05:05:56,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:05:56,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991264799] [2021-08-26 05:05:56,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:05:56,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313295555] [2021-08-26 05:05:56,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313295555] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:05:56,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:05:56,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 05:05:56,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749318225] [2021-08-26 05:05:56,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 05:05:56,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:05:56,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 05:05:56,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:05:56,460 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 05:05:56,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:05:56,600 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2021-08-26 05:05:56,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 05:05:56,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 05:05:56,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:05:56,601 INFO L225 Difference]: With dead ends: 95 [2021-08-26 05:05:56,601 INFO L226 Difference]: Without dead ends: 93 [2021-08-26 05:05:56,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:05:56,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-26 05:05:56,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 62. [2021-08-26 05:05:56,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.169811320754717) internal successors, (62), 61 states have internal predecessors, (62), 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 05:05:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-08-26 05:05:56,605 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 22 [2021-08-26 05:05:56,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:05:56,605 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-08-26 05:05:56,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 05:05:56,605 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-08-26 05:05:56,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-26 05:05:56,606 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:05:56,606 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:05:56,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 05:05:56,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:05:56,822 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:05:56,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:05:56,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1484403939, now seen corresponding path program 1 times [2021-08-26 05:05:56,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:05:56,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089443004] [2021-08-26 05:05:56,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:05:56,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:05:56,829 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:05:56,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264603326] [2021-08-26 05:05:56,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:05:56,829 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:05:56,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:05:56,837 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 05:05:56,838 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 05:05:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:05:56,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-26 05:05:56,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:05:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:05:57,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:05:57,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089443004] [2021-08-26 05:05:57,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:05:57,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264603326] [2021-08-26 05:05:57,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264603326] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:05:57,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:05:57,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 05:05:57,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328168782] [2021-08-26 05:05:57,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 05:05:57,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:05:57,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 05:05:57,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:05:57,240 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:05:57,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:05:57,355 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2021-08-26 05:05:57,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 05:05:57,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-08-26 05:05:57,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:05:57,356 INFO L225 Difference]: With dead ends: 93 [2021-08-26 05:05:57,356 INFO L226 Difference]: Without dead ends: 87 [2021-08-26 05:05:57,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 33.8ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:05:57,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-08-26 05:05:57,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2021-08-26 05:05:57,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 68 states have (on average 1.2058823529411764) internal successors, (82), 76 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 05:05:57,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2021-08-26 05:05:57,360 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 24 [2021-08-26 05:05:57,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:05:57,360 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2021-08-26 05:05:57,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:05:57,361 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2021-08-26 05:05:57,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-26 05:05:57,361 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:05:57,361 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:05:57,381 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 05:05:57,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:05:57,570 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:05:57,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:05:57,570 INFO L82 PathProgramCache]: Analyzing trace with hash -582886304, now seen corresponding path program 1 times [2021-08-26 05:05:57,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:05:57,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784475321] [2021-08-26 05:05:57,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:05:57,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:05:57,580 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:05:57,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095206847] [2021-08-26 05:05:57,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:05:57,587 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:05:57,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:05:57,588 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 05:05:57,588 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 05:05:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:05:57,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-26 05:05:57,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:05:58,051 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:05:58,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:05:58,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784475321] [2021-08-26 05:05:58,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:05:58,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095206847] [2021-08-26 05:05:58,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095206847] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:05:58,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:05:58,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 05:05:58,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335837196] [2021-08-26 05:05:58,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 05:05:58,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:05:58,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 05:05:58,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:05:58,054 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 05:05:58,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:05:58,174 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2021-08-26 05:05:58,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 05:05:58,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2021-08-26 05:05:58,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:05:58,175 INFO L225 Difference]: With dead ends: 88 [2021-08-26 05:05:58,175 INFO L226 Difference]: Without dead ends: 82 [2021-08-26 05:05:58,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 33.9ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:05:58,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-08-26 05:05:58,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2021-08-26 05:05:58,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.1818181818181819) internal successors, (78), 74 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 05:05:58,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2021-08-26 05:05:58,182 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 26 [2021-08-26 05:05:58,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:05:58,183 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2021-08-26 05:05:58,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 05:05:58,183 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2021-08-26 05:05:58,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-26 05:05:58,184 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:05:58,184 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:05:58,204 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 05:05:58,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:05:58,400 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:05:58,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:05:58,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1813911283, now seen corresponding path program 1 times [2021-08-26 05:05:58,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:05:58,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093842943] [2021-08-26 05:05:58,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:05:58,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:05:58,419 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:05:58,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [690048141] [2021-08-26 05:05:58,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:05:58,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:05:58,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:05:58,422 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 05:05:58,423 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 05:05:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:05:58,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-26 05:05:58,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:05:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:05:59,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:05:59,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093842943] [2021-08-26 05:05:59,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:05:59,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690048141] [2021-08-26 05:05:59,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690048141] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:05:59,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:05:59,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 05:05:59,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509435235] [2021-08-26 05:05:59,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:05:59,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:05:59,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:05:59,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:05:59,238 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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 05:05:59,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:05:59,421 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2021-08-26 05:05:59,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 05:05:59,422 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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 05:05:59,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:05:59,422 INFO L225 Difference]: With dead ends: 81 [2021-08-26 05:05:59,422 INFO L226 Difference]: Without dead ends: 79 [2021-08-26 05:05:59,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.7ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-08-26 05:05:59,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-08-26 05:05:59,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2021-08-26 05:05:59,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.1666666666666667) internal successors, (77), 74 states have internal predecessors, (77), 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 05:05:59,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2021-08-26 05:05:59,427 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 31 [2021-08-26 05:05:59,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:05:59,427 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2021-08-26 05:05:59,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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 05:05:59,427 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2021-08-26 05:05:59,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-26 05:05:59,427 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:05:59,427 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-26 05:05:59,445 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 05:05:59,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-26 05:05:59,629 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:05:59,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:05:59,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1811048370, now seen corresponding path program 2 times [2021-08-26 05:05:59,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:05:59,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073148000] [2021-08-26 05:05:59,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:05:59,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:05:59,635 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:05:59,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [225968545] [2021-08-26 05:05:59,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:05:59,636 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:05:59,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:05:59,637 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 05:05:59,658 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 05:05:59,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:05:59,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:05:59,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-26 05:05:59,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:06:00,313 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:06:00,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:06:00,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073148000] [2021-08-26 05:06:00,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:06:00,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225968545] [2021-08-26 05:06:00,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225968545] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:06:00,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:06:00,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 05:06:00,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728439875] [2021-08-26 05:06:00,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:06:00,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:06:00,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:06:00,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:06:00,316 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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 05:06:00,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:06:00,533 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2021-08-26 05:06:00,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 05:06:00,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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 05:06:00,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:06:00,534 INFO L225 Difference]: With dead ends: 120 [2021-08-26 05:06:00,534 INFO L226 Difference]: Without dead ends: 118 [2021-08-26 05:06:00,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 59.1ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:06:00,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-26 05:06:00,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 79. [2021-08-26 05:06:00,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 70 states have (on average 1.1571428571428573) internal successors, (81), 78 states have internal predecessors, (81), 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 05:06:00,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2021-08-26 05:06:00,538 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 31 [2021-08-26 05:06:00,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:06:00,538 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2021-08-26 05:06:00,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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 05:06:00,539 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2021-08-26 05:06:00,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-26 05:06:00,539 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:06:00,540 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:06:00,557 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 05:06:00,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:06:00,749 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:06:00,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:06:00,749 INFO L82 PathProgramCache]: Analyzing trace with hash -587821098, now seen corresponding path program 1 times [2021-08-26 05:06:00,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:06:00,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983118395] [2021-08-26 05:06:00,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:06:00,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:06:00,757 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:06:00,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1341988966] [2021-08-26 05:06:00,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:06:00,758 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:06:00,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:06:00,759 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 05:06:00,766 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 05:06:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:06:01,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-26 05:06:01,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:06:02,332 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:06:02,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:06:02,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983118395] [2021-08-26 05:06:02,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:06:02,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341988966] [2021-08-26 05:06:02,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341988966] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:06:02,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:06:02,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:06:02,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573094165] [2021-08-26 05:06:02,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:06:02,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:06:02,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:06:02,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:06:02,334 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 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 05:06:02,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:06:02,720 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2021-08-26 05:06:02,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 05:06:02,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 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 05:06:02,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:06:02,721 INFO L225 Difference]: With dead ends: 83 [2021-08-26 05:06:02,721 INFO L226 Difference]: Without dead ends: 81 [2021-08-26 05:06:02,722 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.5ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-08-26 05:06:02,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-08-26 05:06:02,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2021-08-26 05:06:02,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 78 states have internal predecessors, (80), 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 05:06:02,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2021-08-26 05:06:02,726 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 33 [2021-08-26 05:06:02,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:06:02,726 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2021-08-26 05:06:02,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 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 05:06:02,726 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2021-08-26 05:06:02,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-26 05:06:02,726 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:06:02,727 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-26 05:06:02,745 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 05:06:02,937 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,SelfDestructingSolverStorable11 [2021-08-26 05:06:02,938 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:06:02,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:06:02,938 INFO L82 PathProgramCache]: Analyzing trace with hash 955884789, now seen corresponding path program 2 times [2021-08-26 05:06:02,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:06:02,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343551042] [2021-08-26 05:06:02,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:06:02,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:06:02,951 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:06:02,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672351959] [2021-08-26 05:06:02,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:06:02,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:06:02,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:06:02,953 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 05:06:02,982 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 05:06:03,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:06:03,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:06:03,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 05:06:03,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:06:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:06:04,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:06:04,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343551042] [2021-08-26 05:06:04,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:06:04,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672351959] [2021-08-26 05:06:04,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672351959] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:06:04,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:06:04,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:06:04,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347002702] [2021-08-26 05:06:04,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:06:04,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:06:04,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:06:04,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:06:04,074 INFO L87 Difference]: Start difference. First operand 79 states and 80 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 05:06:04,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:06:04,496 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2021-08-26 05:06:04,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 05:06:04,497 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 05:06:04,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:06:04,498 INFO L225 Difference]: With dead ends: 117 [2021-08-26 05:06:04,498 INFO L226 Difference]: Without dead ends: 115 [2021-08-26 05:06:04,498 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 194.2ms TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:06:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-26 05:06:04,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 81. [2021-08-26 05:06:04,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 72 states have (on average 1.1388888888888888) internal successors, (82), 80 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 05:06:04,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2021-08-26 05:06:04,502 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 33 [2021-08-26 05:06:04,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:06:04,503 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2021-08-26 05:06:04,503 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 05:06:04,503 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2021-08-26 05:06:04,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-26 05:06:04,503 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:06:04,503 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:06:04,523 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 05:06:04,720 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,SelfDestructingSolverStorable12 [2021-08-26 05:06:04,721 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:06:04,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:06:04,721 INFO L82 PathProgramCache]: Analyzing trace with hash 2039766361, now seen corresponding path program 1 times [2021-08-26 05:06:04,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:06:04,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16392494] [2021-08-26 05:06:04,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:06:04,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:06:04,731 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:06:04,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328099275] [2021-08-26 05:06:04,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:06:04,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:06:04,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:06:04,733 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 05:06:04,741 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 05:06:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:06:05,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-26 05:06:05,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:06:06,282 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:06:06,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:06:06,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16392494] [2021-08-26 05:06:06,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:06:06,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328099275] [2021-08-26 05:06:06,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328099275] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:06:06,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:06:06,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-08-26 05:06:06,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143331114] [2021-08-26 05:06:06,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 05:06:06,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:06:06,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 05:06:06,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-08-26 05:06:06,284 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 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 05:06:06,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:06:06,792 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2021-08-26 05:06:06,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 05:06:06,792 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 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 35 [2021-08-26 05:06:06,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:06:06,793 INFO L225 Difference]: With dead ends: 83 [2021-08-26 05:06:06,793 INFO L226 Difference]: Without dead ends: 73 [2021-08-26 05:06:06,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 441.1ms TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-08-26 05:06:06,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-26 05:06:06,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-08-26 05:06:06,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.140625) internal successors, (73), 72 states have internal predecessors, (73), 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 05:06:06,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2021-08-26 05:06:06,798 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 35 [2021-08-26 05:06:06,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:06:06,798 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2021-08-26 05:06:06,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 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 05:06:06,798 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2021-08-26 05:06:06,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-26 05:06:06,799 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:06:06,799 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-26 05:06:06,816 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 05:06:07,005 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,SelfDestructingSolverStorable13 [2021-08-26 05:06:07,005 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:06:07,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:06:07,006 INFO L82 PathProgramCache]: Analyzing trace with hash -517562664, now seen corresponding path program 2 times [2021-08-26 05:06:07,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:06:07,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773661265] [2021-08-26 05:06:07,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:06:07,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:06:07,017 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:06:07,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2068922584] [2021-08-26 05:06:07,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:06:07,017 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:06:07,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:06:07,018 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 05:06:07,019 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 05:06:07,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-26 05:06:07,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:06:07,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-26 05:06:07,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:06:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-08-26 05:06:12,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:06:12,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773661265] [2021-08-26 05:06:12,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:06:12,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068922584] [2021-08-26 05:06:12,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068922584] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:06:12,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:06:12,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-26 05:06:12,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718956693] [2021-08-26 05:06:12,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 05:06:12,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:06:12,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 05:06:12,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:06:12,355 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:06:42,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:06:42,000 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2021-08-26 05:06:42,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 05:06:42,001 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-08-26 05:06:42,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:06:42,001 INFO L225 Difference]: With dead ends: 73 [2021-08-26 05:06:42,001 INFO L226 Difference]: Without dead ends: 65 [2021-08-26 05:06:42,002 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 9643.2ms TimeCoverageRelationStatistics Valid=63, Invalid=176, Unknown=1, NotChecked=0, Total=240 [2021-08-26 05:06:42,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-08-26 05:06:42,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-08-26 05:06:42,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 64 states have internal predecessors, (65), 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 05:06:42,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2021-08-26 05:06:42,006 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 35 [2021-08-26 05:06:42,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:06:42,006 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2021-08-26 05:06:42,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:06:42,006 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2021-08-26 05:06:42,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-26 05:06:42,007 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:06:42,007 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:06:42,024 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 05:06:42,207 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,SelfDestructingSolverStorable14 [2021-08-26 05:06:42,207 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:06:42,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:06:42,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1745507624, now seen corresponding path program 2 times [2021-08-26 05:06:42,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:06:42,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962139138] [2021-08-26 05:06:42,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:06:42,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:06:42,213 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:06:42,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [298575612] [2021-08-26 05:06:42,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:06:42,214 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:06:42,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:06:42,215 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 05:06:42,216 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 05:06:42,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:06:42,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:06:42,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-26 05:06:42,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:06:43,701 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:06:43,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:06:43,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962139138] [2021-08-26 05:06:43,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:06:43,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298575612] [2021-08-26 05:06:43,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298575612] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:06:43,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:06:43,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:06:43,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640702578] [2021-08-26 05:06:43,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:06:43,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:06:43,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:06:43,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:06:43,702 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 05:06:43,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:06:43,945 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2021-08-26 05:06:43,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 05:06:43,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 42 [2021-08-26 05:06:43,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:06:43,946 INFO L225 Difference]: With dead ends: 88 [2021-08-26 05:06:43,946 INFO L226 Difference]: Without dead ends: 86 [2021-08-26 05:06:43,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 122.3ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-08-26 05:06:43,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-08-26 05:06:43,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2021-08-26 05:06:43,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 73 states have internal predecessors, (75), 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 05:06:43,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2021-08-26 05:06:43,954 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 42 [2021-08-26 05:06:43,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:06:43,955 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2021-08-26 05:06:43,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 05:06:43,955 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2021-08-26 05:06:43,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-26 05:06:43,956 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:06:43,956 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-08-26 05:06:43,962 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 05:06:44,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:06:44,162 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:06:44,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:06:44,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1748370537, now seen corresponding path program 3 times [2021-08-26 05:06:44,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:06:44,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474699254] [2021-08-26 05:06:44,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:06:44,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:06:44,171 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:06:44,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660172817] [2021-08-26 05:06:44,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 05:06:44,171 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:06:44,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:06:44,172 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 05:06:44,173 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 05:06:45,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-26 05:06:45,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:06:45,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-26 05:06:45,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:06:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-26 05:06:45,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:06:45,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474699254] [2021-08-26 05:06:45,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:06:45,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660172817] [2021-08-26 05:06:45,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660172817] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:06:45,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:06:45,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-08-26 05:06:45,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459019670] [2021-08-26 05:06:45,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 05:06:45,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:06:45,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 05:06:45,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-08-26 05:06:45,647 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 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 05:06:59,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:06:59,476 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2021-08-26 05:06:59,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:06:59,477 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 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 42 [2021-08-26 05:06:59,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:06:59,477 INFO L225 Difference]: With dead ends: 74 [2021-08-26 05:06:59,477 INFO L226 Difference]: Without dead ends: 62 [2021-08-26 05:06:59,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 383.8ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-08-26 05:06:59,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-08-26 05:06:59,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-08-26 05:06:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 1.05) internal successors, (63), 61 states have internal predecessors, (63), 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 05:06:59,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2021-08-26 05:06:59,484 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 42 [2021-08-26 05:06:59,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:06:59,484 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2021-08-26 05:06:59,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 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 05:06:59,484 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2021-08-26 05:06:59,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-26 05:06:59,485 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:06:59,485 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:06:59,490 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 05:06:59,690 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,SelfDestructingSolverStorable16 [2021-08-26 05:06:59,691 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:06:59,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:06:59,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1899544187, now seen corresponding path program 2 times [2021-08-26 05:06:59,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:06:59,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568927823] [2021-08-26 05:06:59,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:06:59,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:06:59,697 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:06:59,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1643619167] [2021-08-26 05:06:59,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:06:59,697 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:06:59,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:06:59,698 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 05:06:59,699 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 05:07:00,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-26 05:07:00,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:07:00,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 34 conjunts are in the unsatisfiable core [2021-08-26 05:07:00,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:07:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-08-26 05:07:06,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:07:06,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568927823] [2021-08-26 05:07:06,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:07:06,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643619167] [2021-08-26 05:07:06,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643619167] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:07:06,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:07:06,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-26 05:07:06,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922636688] [2021-08-26 05:07:06,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-26 05:07:06,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:07:06,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-26 05:07:06,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-08-26 05:07:06,592 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 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 05:07:29,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:07:29,949 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2021-08-26 05:07:29,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 05:07:29,950 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 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 44 [2021-08-26 05:07:29,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:07:29,950 INFO L225 Difference]: With dead ends: 62 [2021-08-26 05:07:29,950 INFO L226 Difference]: Without dead ends: 54 [2021-08-26 05:07:29,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 6175.6ms TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-08-26 05:07:29,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-08-26 05:07:29,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-08-26 05:07:29,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 53 states have internal predecessors, (54), 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 05:07:29,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-08-26 05:07:29,956 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 44 [2021-08-26 05:07:29,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:07:29,956 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-08-26 05:07:29,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 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 05:07:29,956 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-08-26 05:07:29,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-26 05:07:29,957 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:07:29,957 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:07:29,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-08-26 05:07:30,162 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,SelfDestructingSolverStorable17 [2021-08-26 05:07:30,163 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:07:30,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:07:30,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1402807763, now seen corresponding path program 3 times [2021-08-26 05:07:30,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:07:30,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489527108] [2021-08-26 05:07:30,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:30,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:07:30,182 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:07:30,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298024395] [2021-08-26 05:07:30,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 05:07:30,182 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:07:30,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:07:30,193 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 05:07:30,222 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 05:07:31,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-26 05:07:31,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:07:31,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-26 05:07:31,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:07:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-26 05:07:32,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:07:32,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489527108] [2021-08-26 05:07:32,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:07:32,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298024395] [2021-08-26 05:07:32,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298024395] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:07:32,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:07:32,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-08-26 05:07:32,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091134485] [2021-08-26 05:07:32,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-26 05:07:32,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:07:32,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-26 05:07:32,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:07:32,245 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:33,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:07:33,191 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-08-26 05:07:33,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 05:07:33,191 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-08-26 05:07:33,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:07:33,192 INFO L225 Difference]: With dead ends: 54 [2021-08-26 05:07:33,192 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 05:07:33,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 717.7ms TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-08-26 05:07:33,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 05:07:33,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 05:07:33,192 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 05:07:33,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 05:07:33,192 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2021-08-26 05:07:33,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:07:33,192 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 05:07:33,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:33,193 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 05:07:33,193 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 05:07:33,194 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:07:33,195 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:07:33,195 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:07:33,195 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:07:33,195 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:07:33,195 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:07:33,195 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:07:33,195 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:07:33,195 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:07:33,195 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:07:33,196 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:07:33,214 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 05:07:33,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:07:33,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 05:07:33,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:07:33,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:07:33,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:07:33,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:07:33,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:07:33,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:07:33,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:07:33,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:07:33,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:07:33,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:07:33,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:07:33,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:07:33,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:07:45,927 WARN L207 SmtUtils]: Spent 10.20 s on a formula simplification. DAG size of input: 106 DAG size of output: 47 [2021-08-26 05:07:57,433 WARN L207 SmtUtils]: Spent 10.21 s on a formula simplification. DAG size of input: 109 DAG size of output: 50 [2021-08-26 05:08:04,557 WARN L207 SmtUtils]: Spent 7.12 s on a formula simplification. DAG size of input: 118 DAG size of output: 40 [2021-08-26 05:08:04,559 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:08:04,559 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:08:04,559 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-08-26 05:08:04,559 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:08:04,560 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 05:08:04,560 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 05:08:04,560 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-08-26 05:08:04,560 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:08:04,560 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:08:04,560 INFO L860 garLoopResultBuilder]: At program point L55(lines 22 56) the Hoare annotation is: true [2021-08-26 05:08:04,560 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:08:04,560 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:08:04,560 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) (<= ULTIMATE.start_main_~a~0 1) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-08-26 05:08:04,560 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:08:04,560 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) (<= ULTIMATE.start_main_~a~0 1) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-08-26 05:08:04,560 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:08:04,560 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (let ((.cse0 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (+ (* 3 (* .cse0 .cse0)) (* 3 .cse0) 1))) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) (<= ULTIMATE.start_main_~a~0 1) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-08-26 05:08:04,560 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:08:04,560 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (let ((.cse0 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (+ (* 3 (* .cse0 .cse0)) (* 3 .cse0) 1))) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) (<= ULTIMATE.start_main_~a~0 1) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-08-26 05:08:04,560 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:08:04,560 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 39 40) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (let ((.cse0 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (+ (* 3 (* .cse0 .cse0)) (* 3 .cse0) 1))) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) (<= ULTIMATE.start_main_~a~0 1) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-08-26 05:08:04,560 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:08:04,560 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 05:08:04,561 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (let ((.cse1 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (and (<= 1 ULTIMATE.start_main_~a~0) .cse0 (= (+ (* 18 .cse1) 6 (* 12 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (* 2 ULTIMATE.start_main_~z~0))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (let ((.cse2 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (+ (* 3 (* .cse2 .cse2)) (* 3 .cse2) 1))) (<= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~z~0 18) (= ULTIMATE.start_main_~x~0 .cse1))) (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~n~0 0)) (and .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~y~0 7) (< ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~z~0 12) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~n~0 1)))) [2021-08-26 05:08:04,561 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:08:04,561 INFO L853 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: (or (let ((.cse1 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6))) (.cse0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* 18 .cse0) 6 (* 12 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (* 2 ULTIMATE.start_main_~z~0))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 6 (* ULTIMATE.start_main_~a~0 .cse1 .cse1 .cse1)) (* 12 (* .cse1 .cse1 .cse1))) (* .cse1 .cse1 .cse1 ULTIMATE.start_main_~z~0)) (= ULTIMATE.start_main_~y~0 (+ (* 3 (* .cse1 .cse1)) (* 3 .cse1) 1)) (<= ULTIMATE.start_main_~a~0 1) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~x~0 .cse0))) (and (= ULTIMATE.start_main_~x~0 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~z~0 6) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) [2021-08-26 05:08:04,561 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:08:04,562 INFO L857 garLoopResultBuilder]: For program point L15-21(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:08:04,562 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:08:04,562 INFO L853 garLoopResultBuilder]: At program point L15-23(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and (= ULTIMATE.start_main_~x~0 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~z~0 6) .cse0) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~y~0 (let ((.cse1 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (+ (* 3 (* .cse1 .cse1)) (* 3 .cse1) 1))) (<= ULTIMATE.start_main_~a~0 1) (<= 0 ULTIMATE.start_main_~a~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse0 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))))) [2021-08-26 05:08:04,562 INFO L857 garLoopResultBuilder]: For program point L15-24(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:08:04,562 INFO L853 garLoopResultBuilder]: At program point L15-26(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and (= ULTIMATE.start_main_~x~0 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~z~0 6) .cse0) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~x~0 (let ((.cse1 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (* .cse1 .cse1 .cse1))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (<= ULTIMATE.start_main_~a~0 1) (<= 0 ULTIMATE.start_main_~a~0) .cse0 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (and (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~y~0 7) (= ULTIMATE.start_main_~z~0 12) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~n~0 1)))) [2021-08-26 05:08:04,562 INFO L857 garLoopResultBuilder]: For program point L15-27(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:08:04,562 INFO L853 garLoopResultBuilder]: At program point L15-29(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and (= ULTIMATE.start_main_~x~0 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~z~0 6) .cse0) (and (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~z~0 12) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse0) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~x~0 (let ((.cse1 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (* .cse1 .cse1 .cse1))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (<= ULTIMATE.start_main_~a~0 1) (<= 0 ULTIMATE.start_main_~a~0) .cse0 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))))) [2021-08-26 05:08:04,562 INFO L857 garLoopResultBuilder]: For program point L15-30(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:08:04,563 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:08:04,563 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:08:04,563 INFO L860 garLoopResultBuilder]: At program point L15-32(lines 14 20) the Hoare annotation is: true [2021-08-26 05:08:04,563 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:08:04,563 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:08:04,563 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:08:04,563 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:08:04,563 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:08:04,563 INFO L857 garLoopResultBuilder]: For program point L16-7(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:08:04,563 INFO L857 garLoopResultBuilder]: For program point L16-8(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:08:04,563 INFO L857 garLoopResultBuilder]: For program point L16-9(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:08:04,564 INFO L857 garLoopResultBuilder]: For program point L16-10(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:08:04,564 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 05:08:04,564 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:08:04,564 INFO L853 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~a~0 1)) (.cse2 (<= 0 ULTIMATE.start_main_~a~0)) (.cse3 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) (.cse4 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)))) (or (and .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) .cse1 .cse2 .cse3 .cse4) (and .cse0 (= ULTIMATE.start_main_~y~0 (let ((.cse5 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (+ (* 3 (* .cse5 .cse5)) (* 3 .cse5) 1))) .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~n~0 0)))) [2021-08-26 05:08:04,564 INFO L857 garLoopResultBuilder]: For program point L33-3(lines 33 46) no Hoare annotation was computed. [2021-08-26 05:08:04,564 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:08:04,564 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:08:04,573 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 05:08:04,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 05:08:04 BoogieIcfgContainer [2021-08-26 05:08:04,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 05:08:04,590 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 05:08:04,590 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 05:08:04,590 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 05:08:04,590 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:05:53" (3/4) ... [2021-08-26 05:08:04,592 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 05:08:04,598 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-08-26 05:08:04,598 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 05:08:04,599 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 05:08:04,599 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 05:08:04,630 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 05:08:04,632 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 05:08:04,632 INFO L168 Benchmark]: Toolchain (without parser) took 132033.22 ms. Allocated memory was 52.4 MB in the beginning and 117.4 MB in the end (delta: 65.0 MB). Free memory was 29.5 MB in the beginning and 25.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 67.5 MB. Max. memory is 16.1 GB. [2021-08-26 05:08:04,633 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 52.4 MB. Free memory was 34.6 MB in the beginning and 34.6 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 05:08:04,633 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.80 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 29.3 MB in the beginning and 45.9 MB in the end (delta: -16.7 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2021-08-26 05:08:04,633 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.90 ms. Allocated memory is still 62.9 MB. Free memory was 45.9 MB in the beginning and 44.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 05:08:04,634 INFO L168 Benchmark]: Boogie Preprocessor took 35.69 ms. Allocated memory is still 62.9 MB. Free memory was 44.2 MB in the beginning and 42.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 05:08:04,634 INFO L168 Benchmark]: RCFGBuilder took 372.57 ms. Allocated memory is still 62.9 MB. Free memory was 42.9 MB in the beginning and 40.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2021-08-26 05:08:04,634 INFO L168 Benchmark]: TraceAbstraction took 131318.59 ms. Allocated memory was 62.9 MB in the beginning and 117.4 MB in the end (delta: 54.5 MB). Free memory was 39.6 MB in the beginning and 29.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 71.3 MB. Max. memory is 16.1 GB. [2021-08-26 05:08:04,634 INFO L168 Benchmark]: Witness Printer took 42.24 ms. Allocated memory is still 117.4 MB. Free memory was 29.5 MB in the beginning and 25.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 05:08:04,636 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 52.4 MB. Free memory was 34.6 MB in the beginning and 34.6 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 217.80 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 29.3 MB in the beginning and 45.9 MB in the end (delta: -16.7 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.90 ms. Allocated memory is still 62.9 MB. Free memory was 45.9 MB in the beginning and 44.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.69 ms. Allocated memory is still 62.9 MB. Free memory was 44.2 MB in the beginning and 42.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 372.57 ms. Allocated memory is still 62.9 MB. Free memory was 42.9 MB in the beginning and 40.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 131318.59 ms. Allocated memory was 62.9 MB in the beginning and 117.4 MB in the end (delta: 54.5 MB). Free memory was 39.6 MB in the beginning and 29.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 71.3 MB. Max. memory is 16.1 GB. * Witness Printer took 42.24 ms. Allocated memory is still 117.4 MB. Free memory was 29.5 MB in the beginning and 25.3 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: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 131248.9ms, OverallIterations: 19, TraceHistogramMax: 4, EmptinessCheckTime: 12.7ms, AutomataDifference: 70743.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 31162.0ms, InitialAbstractionConstructionTime: 6.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 548 SDtfs, 913 SDslu, 1136 SDs, 0 SdLazy, 1929 SolverSat, 360 SolverUnsat, 16 SolverUnknown, 0 SolverNotchecked, 59885.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 564 GetRequests, 406 SyntacticMatches, 3 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 18207.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=13, InterpolantAutomatonStates: 137, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 112.2ms AutomataMinimizationTime, 19 MinimizatonAttempts, 231 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 55 NumberOfFragments, 931 HoareAnnotationTreeSize, 13 FomulaSimplifications, 17883 FormulaSimplificationTreeSizeReduction, 161.9ms HoareSimplificationTime, 13 FomulaSimplificationsInter, 5433 FormulaSimplificationTreeSizeReductionInter, 30993.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 144.4ms SsaConstructionTime, 653.2ms SatisfiabilityAnalysisTime, 18584.2ms InterpolantComputationTime, 518 NumberOfCodeBlocks, 430 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 499 ConstructedInterpolants, 1 QuantifiedInterpolants, 6525 SizeOfPredicates, 114 NumberOfNonLiveVariables, 1732 ConjunctsInSsa, 326 ConjunctsInUnsatCore, 19 InterpolantComputations, 7 PerfectInterpolantSequences, 162/307 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 11 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((1 <= a && cond == 1) && 18 * (n * n * n) + 6 + 12 * y == z * y + 2 * z) && 1 == cond) && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && a <= 1) && z == 18) && x == n * n * n) || ((((x == 0 && y == 1) && !(0 == cond)) && z == 6 * n + 6) && n == 0)) || (((((((cond == 1 && 1 <= cond) && x == 1) && y == 7) && a < 1) && z == 12) && 0 <= a) && n == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((cond == 1 && 1 == cond) && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && n <= a + 1) && a <= 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((cond == 1 && 1 == cond) && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && n <= a + 1) && a <= 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((cond == 1 && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && n <= a + 1) && a <= 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((((((cond == 1 && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && n <= a + 1) && a <= 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n) || ((((((cond == 1 && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && a <= 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n) && n == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((cond == 1 && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && n <= a + 1) && a <= 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((x == 0 && 1 <= cond) && y == 1) && z == 6) && z == 6 * n + 6) || (((x == 1 && z == 12) && !(0 == cond)) && z == 6 * n + 6)) || (((((((cond == 1 && x == (6 + z * -1) / -6 * ((6 + z * -1) / -6) * ((6 + z * -1) / -6)) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && a <= 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((cond == 1 && 18 * (n * n * n) + 6 + 12 * y == z * y + 2 * z) && 1 == cond) && 6 * (a * ((6 + z * -1) / -6) * ((6 + z * -1) / -6) * ((6 + z * -1) / -6)) + 12 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6) * ((6 + z * -1) / -6)) == (6 + z * -1) / -6 * ((6 + z * -1) / -6) * ((6 + z * -1) / -6) * z) && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && a <= 1) && 0 <= a) && x == n * n * n) || ((((x == 0 && 1 <= cond) && y == 1) && z == 6) && z == 6 * n + 6) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((cond == 1 && 1 == cond) && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && n <= a + 1) && a <= 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((x == 0 && 1 <= cond) && y == 1) && z == 6) && z == 6 * n + 6) || (((((((cond == 1 && x == (6 + z * -1) / -6 * ((6 + z * -1) / -6) * ((6 + z * -1) / -6)) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && a <= 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n)) || ((((x == 1 && y == 7) && z == 12) && !(0 == cond)) && n == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((x == 0 && 1 <= cond) && y == 1) && z == 6) && z == 6 * n + 6) || ((((((cond == 1 && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && a <= 1) && 0 <= a) && !(0 == cond)) && z == 6 * n + 6) && x == n * n * n) RESULT: Ultimate proved your program to be correct! [2021-08-26 05:08:04,673 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...