./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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_unwindbound2.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 9f29295356d880ad2c3c48175b14c9bcccb3ded9 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 12:02:58,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 12:02:58,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 12:02:58,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 12:02:58,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 12:02:58,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 12:02:58,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 12:02:58,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 12:02:58,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 12:02:58,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 12:02:58,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 12:02:58,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 12:02:58,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 12:02:58,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 12:02:58,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 12:02:58,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 12:02:58,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 12:02:58,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 12:02:58,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 12:02:58,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 12:02:58,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 12:02:58,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 12:02:58,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 12:02:58,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 12:02:58,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 12:02:58,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 12:02:58,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 12:02:58,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 12:02:58,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 12:02:58,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 12:02:58,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 12:02:58,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 12:02:58,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 12:02:58,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 12:02:58,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 12:02:58,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 12:02:58,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 12:02:58,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 12:02:58,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 12:02:58,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 12:02:58,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 12:02:58,459 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 12:02:58,489 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 12:02:58,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 12:02:58,490 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 12:02:58,490 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 12:02:58,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 12:02:58,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 12:02:58,492 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 12:02:58,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 12:02:58,492 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 12:02:58,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 12:02:58,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 12:02:58,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 12:02:58,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 12:02:58,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 12:02:58,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 12:02:58,493 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 12:02:58,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 12:02:58,494 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 12:02:58,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 12:02:58,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 12:02:58,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 12:02:58,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 12:02:58,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:02:58,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 12:02:58,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 12:02:58,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 12:02:58,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 12:02:58,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 12:02:58,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 12:02:58,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 12:02:58,496 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f29295356d880ad2c3c48175b14c9bcccb3ded9 [2021-08-29 12:02:58,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 12:02:58,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 12:02:58,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 12:02:58,785 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 12:02:58,786 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 12:02:58,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c [2021-08-29 12:02:58,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4593ccb82/05697c99e8c34ee79c5e1163841cadd7/FLAG79d55d3f1 [2021-08-29 12:02:59,428 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 12:02:59,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c [2021-08-29 12:02:59,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4593ccb82/05697c99e8c34ee79c5e1163841cadd7/FLAG79d55d3f1 [2021-08-29 12:02:59,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4593ccb82/05697c99e8c34ee79c5e1163841cadd7 [2021-08-29 12:02:59,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 12:02:59,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 12:02:59,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 12:02:59,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 12:02:59,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 12:02:59,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:02:59" (1/1) ... [2021-08-29 12:02:59,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6fd8e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:02:59, skipping insertion in model container [2021-08-29 12:02:59,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:02:59" (1/1) ... [2021-08-29 12:02:59,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 12:02:59,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 12:02:59,974 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_unwindbound2.c[596,609] [2021-08-29 12:03:00,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:03:00,007 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 12:03:00,017 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_unwindbound2.c[596,609] [2021-08-29 12:03:00,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:03:00,048 INFO L208 MainTranslator]: Completed translation [2021-08-29 12:03:00,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:03:00 WrapperNode [2021-08-29 12:03:00,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 12:03:00,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 12:03:00,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 12:03:00,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 12:03:00,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:03:00" (1/1) ... [2021-08-29 12:03:00,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:03:00" (1/1) ... [2021-08-29 12:03:00,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 12:03:00,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 12:03:00,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 12:03:00,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 12:03:00,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:03:00" (1/1) ... [2021-08-29 12:03:00,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:03:00" (1/1) ... [2021-08-29 12:03:00,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:03:00" (1/1) ... [2021-08-29 12:03:00,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:03:00" (1/1) ... [2021-08-29 12:03:00,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:03:00" (1/1) ... [2021-08-29 12:03:00,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:03:00" (1/1) ... [2021-08-29 12:03:00,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:03:00" (1/1) ... [2021-08-29 12:03:00,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 12:03:00,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 12:03:00,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 12:03:00,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 12:03:00,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:03:00" (1/1) ... [2021-08-29 12:03:00,126 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:03:00,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:03:00,141 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) [2021-08-29 12:03:00,159 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 [2021-08-29 12:03:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 12:03:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_short [2021-08-29 12:03:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 12:03:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 12:03:00,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 12:03:00,323 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 12:03:00,323 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-08-29 12:03:00,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:03:00 BoogieIcfgContainer [2021-08-29 12:03:00,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 12:03:00,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 12:03:00,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 12:03:00,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 12:03:00,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 12:02:59" (1/3) ... [2021-08-29 12:03:00,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a055146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:03:00, skipping insertion in model container [2021-08-29 12:03:00,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:03:00" (2/3) ... [2021-08-29 12:03:00,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a055146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:03:00, skipping insertion in model container [2021-08-29 12:03:00,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:03:00" (3/3) ... [2021-08-29 12:03:00,332 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound2.c [2021-08-29 12:03:00,335 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 12:03:00,335 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-08-29 12:03:00,365 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 12:03:00,369 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 [2021-08-29 12:03:00,369 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-08-29 12:03:00,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 40 states have (on average 1.625) internal successors, (65), 51 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) [2021-08-29 12:03:00,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 12:03:00,381 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:03:00,381 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 12:03:00,381 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)] === [2021-08-29 12:03:00,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:03:00,385 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-08-29 12:03:00,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:03:00,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505221632] [2021-08-29 12:03:00,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:00,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:03:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:03:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:03:00,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:03:00,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505221632] [2021-08-29 12:03:00,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505221632] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:03:00,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:03:00,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:03:00,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728261524] [2021-08-29 12:03:00,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:03:00,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:03:00,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:03:00,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:03:00,562 INFO L87 Difference]: Start difference. First operand has 52 states, 40 states have (on average 1.625) internal successors, (65), 51 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) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:00,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:03:00,666 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2021-08-29 12:03:00,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:03:00,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-08-29 12:03:00,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:03:00,674 INFO L225 Difference]: With dead ends: 101 [2021-08-29 12:03:00,674 INFO L226 Difference]: Without dead ends: 47 [2021-08-29 12:03:00,676 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.04ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:03:00,678 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.28ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.15ms IncrementalHoareTripleChecker+Time [2021-08-29 12:03:00,679 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 107 Unknown, 0 Unchecked, 1.28ms Time], IncrementalHoareTripleChecker [22 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 81.15ms Time] [2021-08-29 12:03:00,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-08-29 12:03:00,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2021-08-29 12:03:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 43 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) [2021-08-29 12:03:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-08-29 12:03:00,707 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 6 [2021-08-29 12:03:00,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:03:00,707 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-08-29 12:03:00,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:00,707 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-08-29 12:03:00,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 12:03:00,708 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:03:00,708 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:03:00,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 12:03:00,708 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:03:00,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:03:00,709 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-08-29 12:03:00,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:03:00,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289525230] [2021-08-29 12:03:00,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:00,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:03:00,719 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:03:00,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [235254240] [2021-08-29 12:03:00,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:00,720 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:00,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:03:00,737 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) [2021-08-29 12:03:00,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 12:03:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:03:00,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 12:03:00,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:03:00,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:03:00,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:03:00,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:03:00,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289525230] [2021-08-29 12:03:00,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:03:00,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235254240] [2021-08-29 12:03:00,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235254240] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:03:00,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:03:00,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:03:00,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654442004] [2021-08-29 12:03:00,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:03:00,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:03:00,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:03:00,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:03:00,844 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:01,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:03:01,001 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2021-08-29 12:03:01,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:03:01,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-29 12:03:01,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:03:01,005 INFO L225 Difference]: With dead ends: 86 [2021-08-29 12:03:01,006 INFO L226 Difference]: Without dead ends: 84 [2021-08-29 12:03:01,007 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.64ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:03:01,008 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.53ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.66ms IncrementalHoareTripleChecker+Time [2021-08-29 12:03:01,009 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 135 Unknown, 0 Unchecked, 1.53ms Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 135.66ms Time] [2021-08-29 12:03:01,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-29 12:03:01,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 49. [2021-08-29 12:03:01,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.275) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:01,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2021-08-29 12:03:01,027 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 8 [2021-08-29 12:03:01,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:03:01,027 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2021-08-29 12:03:01,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:01,028 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2021-08-29 12:03:01,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 12:03:01,030 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:03:01,030 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:03:01,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-29 12:03:01,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:01,245 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:03:01,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:03:01,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1269812074, now seen corresponding path program 1 times [2021-08-29 12:03:01,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:03:01,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678051061] [2021-08-29 12:03:01,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:01,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:03:01,258 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:03:01,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166052240] [2021-08-29 12:03:01,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:01,264 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:01,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:03:01,280 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) [2021-08-29 12:03:01,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 12:03:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:03:01,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-29 12:03:01,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:03:01,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:03:01,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:03:01,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:03:01,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678051061] [2021-08-29 12:03:01,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:03:01,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166052240] [2021-08-29 12:03:01,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166052240] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:03:01,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:03:01,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 12:03:01,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203728515] [2021-08-29 12:03:01,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:03:01,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:03:01,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:03:01,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:03:01,388 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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) [2021-08-29 12:03:01,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:03:01,483 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2021-08-29 12:03:01,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:03:01,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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 [2021-08-29 12:03:01,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:03:01,484 INFO L225 Difference]: With dead ends: 71 [2021-08-29 12:03:01,484 INFO L226 Difference]: Without dead ends: 49 [2021-08-29 12:03:01,485 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.47ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:03:01,485 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.95ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.70ms IncrementalHoareTripleChecker+Time [2021-08-29 12:03:01,486 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 133 Unknown, 0 Unchecked, 0.95ms Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 86.70ms Time] [2021-08-29 12:03:01,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-08-29 12:03:01,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-08-29 12:03:01,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.25) internal successors, (50), 48 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:01,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-08-29 12:03:01,490 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 9 [2021-08-29 12:03:01,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:03:01,490 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-08-29 12:03:01,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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) [2021-08-29 12:03:01,491 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-08-29 12:03:01,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 12:03:01,491 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:03:01,491 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:03:01,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 12:03:01,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-29 12:03:01,711 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)] === [2021-08-29 12:03:01,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:03:01,712 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-08-29 12:03:01,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:03:01,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906185913] [2021-08-29 12:03:01,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:01,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:03:01,731 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:03:01,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242709431] [2021-08-29 12:03:01,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:01,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:01,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:03:01,744 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) [2021-08-29 12:03:01,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 12:03:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:03:01,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 12:03:01,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:03:01,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:03:01,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:03:01,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:03:01,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906185913] [2021-08-29 12:03:01,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:03:01,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242709431] [2021-08-29 12:03:01,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242709431] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:03:01,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:03:01,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:03:01,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135441256] [2021-08-29 12:03:01,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:03:01,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:03:01,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:03:01,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:03:01,837 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:01,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:03:01,927 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2021-08-29 12:03:01,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:03:01,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-08-29 12:03:01,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:03:01,928 INFO L225 Difference]: With dead ends: 84 [2021-08-29 12:03:01,928 INFO L226 Difference]: Without dead ends: 80 [2021-08-29 12:03:01,928 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.92ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:03:01,929 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.87ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.78ms IncrementalHoareTripleChecker+Time [2021-08-29 12:03:01,929 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 137 Unknown, 0 Unchecked, 0.87ms Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 76.78ms Time] [2021-08-29 12:03:01,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-29 12:03:01,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-08-29 12:03:01,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 59 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:01,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2021-08-29 12:03:01,933 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 10 [2021-08-29 12:03:01,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:03:01,934 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2021-08-29 12:03:01,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:01,934 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2021-08-29 12:03:01,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 12:03:01,934 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:03:01,934 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:03:01,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 12:03:02,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:02,165 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)] === [2021-08-29 12:03:02,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:03:02,166 INFO L82 PathProgramCache]: Analyzing trace with hash -828134125, now seen corresponding path program 1 times [2021-08-29 12:03:02,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:03:02,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882270502] [2021-08-29 12:03:02,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:02,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:03:02,173 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:03:02,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [804873913] [2021-08-29 12:03:02,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:02,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:02,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:03:02,191 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) [2021-08-29 12:03:02,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-29 12:03:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:03:02,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-29 12:03:02,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:03:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:03:02,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:03:02,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:03:02,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882270502] [2021-08-29 12:03:02,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:03:02,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804873913] [2021-08-29 12:03:02,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804873913] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:03:02,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:03:02,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:03:02,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456547185] [2021-08-29 12:03:02,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:03:02,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:03:02,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:03:02,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:03:02,362 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:02,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:03:02,473 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2021-08-29 12:03:02,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 12:03:02,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-08-29 12:03:02,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:03:02,474 INFO L225 Difference]: With dead ends: 83 [2021-08-29 12:03:02,475 INFO L226 Difference]: Without dead ends: 59 [2021-08-29 12:03:02,475 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.90ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:03:02,475 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.76ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 99.90ms IncrementalHoareTripleChecker+Time [2021-08-29 12:03:02,476 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 155 Unknown, 0 Unchecked, 0.76ms Time], IncrementalHoareTripleChecker [18 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 99.90ms Time] [2021-08-29 12:03:02,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-08-29 12:03:02,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2021-08-29 12:03:02,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:02,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-08-29 12:03:02,480 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 12 [2021-08-29 12:03:02,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:03:02,480 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-08-29 12:03:02,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:02,480 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-08-29 12:03:02,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-29 12:03:02,481 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:03:02,481 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:03:02,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-29 12:03:02,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:02,698 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)] === [2021-08-29 12:03:02,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:03:02,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1416701979, now seen corresponding path program 1 times [2021-08-29 12:03:02,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:03:02,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497588179] [2021-08-29 12:03:02,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:02,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:03:02,706 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:03:02,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1503224167] [2021-08-29 12:03:02,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:02,707 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:02,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:03:02,708 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) [2021-08-29 12:03:02,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-29 12:03:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:03:02,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-29 12:03:02,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:03:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:03:02,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:03:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:03:02,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:03:02,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497588179] [2021-08-29 12:03:02,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:03:02,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503224167] [2021-08-29 12:03:02,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503224167] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:03:02,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:03:02,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-08-29 12:03:02,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834339699] [2021-08-29 12:03:02,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 12:03:02,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:03:02,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 12:03:02,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-29 12:03:02,949 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:03,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:03:03,194 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2021-08-29 12:03:03,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 12:03:03,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-08-29 12:03:03,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:03:03,195 INFO L225 Difference]: With dead ends: 92 [2021-08-29 12:03:03,195 INFO L226 Difference]: Without dead ends: 86 [2021-08-29 12:03:03,196 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 51.23ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-08-29 12:03:03,196 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 125 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 163.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 199.73ms IncrementalHoareTripleChecker+Time [2021-08-29 12:03:03,196 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 0 Invalid, 201 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [39 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 199.73ms Time] [2021-08-29 12:03:03,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-08-29 12:03:03,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 50. [2021-08-29 12:03:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:03,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2021-08-29 12:03:03,202 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 20 [2021-08-29 12:03:03,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:03:03,202 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2021-08-29 12:03:03,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:03,203 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2021-08-29 12:03:03,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-29 12:03:03,203 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:03:03,203 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:03:03,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-29 12:03:03,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:03,420 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:03:03,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:03:03,421 INFO L82 PathProgramCache]: Analyzing trace with hash -972705934, now seen corresponding path program 1 times [2021-08-29 12:03:03,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:03:03,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140438187] [2021-08-29 12:03:03,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:03,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:03:03,428 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:03:03,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273452389] [2021-08-29 12:03:03,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:03,429 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:03,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:03:03,429 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) [2021-08-29 12:03:03,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-29 12:03:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:03:03,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-29 12:03:03,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:03:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:03:03,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:03:03,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:03:03,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:03:03,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140438187] [2021-08-29 12:03:03,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:03:03,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273452389] [2021-08-29 12:03:03,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273452389] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:03:03,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:03:03,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-29 12:03:03,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113910537] [2021-08-29 12:03:03,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 12:03:03,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:03:03,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 12:03:03,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:03:03,567 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:03,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:03:03,713 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2021-08-29 12:03:03,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 12:03:03,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-08-29 12:03:03,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:03:03,716 INFO L225 Difference]: With dead ends: 72 [2021-08-29 12:03:03,716 INFO L226 Difference]: Without dead ends: 52 [2021-08-29 12:03:03,716 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.82ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 12:03:03,717 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 124.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.35ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 137.94ms IncrementalHoareTripleChecker+Time [2021-08-29 12:03:03,717 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 128 Unknown, 0 Unchecked, 0.35ms Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 137.94ms Time] [2021-08-29 12:03:03,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-08-29 12:03:03,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-08-29 12:03:03,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:03,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2021-08-29 12:03:03,721 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 21 [2021-08-29 12:03:03,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:03:03,721 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2021-08-29 12:03:03,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:03,721 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2021-08-29 12:03:03,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-29 12:03:03,721 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:03:03,721 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:03:03,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-08-29 12:03:03,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:03,933 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:03:03,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:03:03,933 INFO L82 PathProgramCache]: Analyzing trace with hash 54186920, now seen corresponding path program 1 times [2021-08-29 12:03:03,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:03:03,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859455881] [2021-08-29 12:03:03,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:03,933 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:03:03,940 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:03:03,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493783258] [2021-08-29 12:03:03,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:03,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:03,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:03:03,941 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) [2021-08-29 12:03:03,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-29 12:03:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:03:03,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-29 12:03:03,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:03:04,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:03:04,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:03:04,173 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:03:04,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:03:04,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859455881] [2021-08-29 12:03:04,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:03:04,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493783258] [2021-08-29 12:03:04,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493783258] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:03:04,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:03:04,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-08-29 12:03:04,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428037833] [2021-08-29 12:03:04,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 12:03:04,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:03:04,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 12:03:04,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-29 12:03:04,175 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:04,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:03:04,303 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2021-08-29 12:03:04,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 12:03:04,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-08-29 12:03:04,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:03:04,304 INFO L225 Difference]: With dead ends: 86 [2021-08-29 12:03:04,304 INFO L226 Difference]: Without dead ends: 84 [2021-08-29 12:03:04,304 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 35.41ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-08-29 12:03:04,305 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.61ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106.88ms IncrementalHoareTripleChecker+Time [2021-08-29 12:03:04,305 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 219 Unknown, 0 Unchecked, 0.61ms Time], IncrementalHoareTripleChecker [5 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 106.88ms Time] [2021-08-29 12:03:04,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-29 12:03:04,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 57. [2021-08-29 12:03:04,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 56 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:04,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2021-08-29 12:03:04,310 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 22 [2021-08-29 12:03:04,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:03:04,311 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2021-08-29 12:03:04,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:04,311 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2021-08-29 12:03:04,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-29 12:03:04,311 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:03:04,311 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:03:04,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-29 12:03:04,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:04,521 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:03:04,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:03:04,521 INFO L82 PathProgramCache]: Analyzing trace with hash 534178827, now seen corresponding path program 1 times [2021-08-29 12:03:04,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:03:04,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756238921] [2021-08-29 12:03:04,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:04,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:03:04,528 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:03:04,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713782352] [2021-08-29 12:03:04,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:04,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:04,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:03:04,530 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) [2021-08-29 12:03:04,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-29 12:03:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:03:04,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-29 12:03:04,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:03:04,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:03:04,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:03:04,858 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:03:04,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:03:04,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756238921] [2021-08-29 12:03:04,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:03:04,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713782352] [2021-08-29 12:03:04,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713782352] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:03:04,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:03:04,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-08-29 12:03:04,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816936596] [2021-08-29 12:03:04,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 12:03:04,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:03:04,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 12:03:04,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-29 12:03:04,859 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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) [2021-08-29 12:03:05,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:03:05,066 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2021-08-29 12:03:05,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 12:03:05,067 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-08-29 12:03:05,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:03:05,067 INFO L225 Difference]: With dead ends: 78 [2021-08-29 12:03:05,067 INFO L226 Difference]: Without dead ends: 60 [2021-08-29 12:03:05,067 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 86.71ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-08-29 12:03:05,068 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 87 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 139.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.01ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 155.86ms IncrementalHoareTripleChecker+Time [2021-08-29 12:03:05,068 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 0 Invalid, 174 Unknown, 0 Unchecked, 1.01ms Time], IncrementalHoareTripleChecker [40 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 155.86ms Time] [2021-08-29 12:03:05,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-08-29 12:03:05,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 45. [2021-08-29 12:03:05,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:05,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-08-29 12:03:05,075 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 24 [2021-08-29 12:03:05,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:03:05,076 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-08-29 12:03:05,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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) [2021-08-29 12:03:05,076 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-08-29 12:03:05,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-29 12:03:05,077 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:03:05,077 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:03:05,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-29 12:03:05,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-08-29 12:03:05,289 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)] === [2021-08-29 12:03:05,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:03:05,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1750673281, now seen corresponding path program 1 times [2021-08-29 12:03:05,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:03:05,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931285744] [2021-08-29 12:03:05,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:05,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:03:05,302 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:03:05,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852166823] [2021-08-29 12:03:05,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:05,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:05,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:03:05,305 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) [2021-08-29 12:03:05,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-29 12:03:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:03:05,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-29 12:03:05,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:03:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:03:05,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:03:06,202 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:03:06,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:03:06,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931285744] [2021-08-29 12:03:06,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:03:06,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852166823] [2021-08-29 12:03:06,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852166823] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:03:06,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:03:06,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-29 12:03:06,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198071624] [2021-08-29 12:03:06,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 12:03:06,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:03:06,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 12:03:06,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-29 12:03:06,204 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:06,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:03:06,713 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2021-08-29 12:03:06,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 12:03:06,714 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 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 [2021-08-29 12:03:06,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:03:06,714 INFO L225 Difference]: With dead ends: 60 [2021-08-29 12:03:06,714 INFO L226 Difference]: Without dead ends: 58 [2021-08-29 12:03:06,715 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 203.96ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-29 12:03:06,715 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 391.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.65ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 444.52ms IncrementalHoareTripleChecker+Time [2021-08-29 12:03:06,715 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 214 Unknown, 0 Unchecked, 0.65ms Time], IncrementalHoareTripleChecker [15 Valid, 166 Invalid, 0 Unknown, 33 Unchecked, 444.52ms Time] [2021-08-29 12:03:06,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-08-29 12:03:06,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2021-08-29 12:03:06,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 53 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) [2021-08-29 12:03:06,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2021-08-29 12:03:06,720 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 31 [2021-08-29 12:03:06,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:03:06,721 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2021-08-29 12:03:06,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:06,721 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2021-08-29 12:03:06,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-29 12:03:06,731 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:03:06,732 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:03:06,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-29 12:03:06,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-29 12:03:06,949 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:03:06,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:03:06,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1230314914, now seen corresponding path program 1 times [2021-08-29 12:03:06,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:03:06,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791201931] [2021-08-29 12:03:06,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:06,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:03:06,957 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:03:06,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018541756] [2021-08-29 12:03:06,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:06,957 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:06,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:03:06,977 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) [2021-08-29 12:03:07,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-29 12:03:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:03:07,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-29 12:03:07,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:03:07,387 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:03:07,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:03:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:03:07,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:03:07,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791201931] [2021-08-29 12:03:07,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:03:07,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018541756] [2021-08-29 12:03:07,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018541756] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:03:07,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:03:07,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-29 12:03:07,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881838897] [2021-08-29 12:03:07,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 12:03:07,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:03:07,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 12:03:07,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-29 12:03:07,741 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 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) [2021-08-29 12:03:07,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:03:07,874 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2021-08-29 12:03:07,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 12:03:07,874 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 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) Word has length 33 [2021-08-29 12:03:07,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:03:07,875 INFO L225 Difference]: With dead ends: 58 [2021-08-29 12:03:07,875 INFO L226 Difference]: Without dead ends: 50 [2021-08-29 12:03:07,875 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 145.65ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-08-29 12:03:07,876 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.54ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 91.83ms IncrementalHoareTripleChecker+Time [2021-08-29 12:03:07,876 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 207 Unknown, 0 Unchecked, 0.54ms Time], IncrementalHoareTripleChecker [4 Valid, 159 Invalid, 0 Unknown, 44 Unchecked, 91.83ms Time] [2021-08-29 12:03:07,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-29 12:03:07,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-08-29 12:03:07,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:03:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2021-08-29 12:03:07,881 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 33 [2021-08-29 12:03:07,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:03:07,881 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2021-08-29 12:03:07,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 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) [2021-08-29 12:03:07,881 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2021-08-29 12:03:07,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-29 12:03:07,882 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:03:07,882 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:03:07,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-29 12:03:08,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-08-29 12:03:08,093 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:03:08,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:03:08,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1900165254, now seen corresponding path program 2 times [2021-08-29 12:03:08,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:03:08,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284100678] [2021-08-29 12:03:08,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:03:08,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:03:08,099 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:03:08,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016860551] [2021-08-29 12:03:08,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 12:03:08,100 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:03:08,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:03:08,101 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) [2021-08-29 12:03:08,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-29 12:03:08,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 12:03:08,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-08-29 12:03:08,137 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 12:03:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 12:03:08,171 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 12:03:08,171 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 12:03:08,176 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (10 of 11 remaining) [2021-08-29 12:03:08,177 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (9 of 11 remaining) [2021-08-29 12:03:08,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (8 of 11 remaining) [2021-08-29 12:03:08,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (7 of 11 remaining) [2021-08-29 12:03:08,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (6 of 11 remaining) [2021-08-29 12:03:08,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 11 remaining) [2021-08-29 12:03:08,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 11 remaining) [2021-08-29 12:03:08,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (3 of 11 remaining) [2021-08-29 12:03:08,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (2 of 11 remaining) [2021-08-29 12:03:08,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2021-08-29 12:03:08,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (0 of 11 remaining) [2021-08-29 12:03:08,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-29 12:03:08,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-08-29 12:03:08,384 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 12:03:08,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 12:03:08 BoogieIcfgContainer [2021-08-29 12:03:08,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 12:03:08,416 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 12:03:08,416 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 12:03:08,417 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 12:03:08,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:03:00" (3/4) ... [2021-08-29 12:03:08,418 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 12:03:08,616 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 12:03:08,617 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 12:03:08,618 INFO L158 Benchmark]: Toolchain (without parser) took 8787.94ms. Allocated memory was 56.6MB in the beginning and 121.6MB in the end (delta: 65.0MB). Free memory was 41.6MB in the beginning and 75.1MB in the end (delta: -33.5MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. [2021-08-29 12:03:08,618 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 46.1MB. Free memory was 28.7MB in the beginning and 28.7MB in the end (delta: 30.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:03:08,618 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.68ms. Allocated memory is still 56.6MB. Free memory was 41.4MB in the beginning and 31.2MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 12:03:08,619 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.94ms. Allocated memory is still 56.6MB. Free memory was 31.2MB in the beginning and 29.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:03:08,619 INFO L158 Benchmark]: Boogie Preprocessor took 30.93ms. Allocated memory is still 56.6MB. Free memory was 29.4MB in the beginning and 28.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:03:08,619 INFO L158 Benchmark]: RCFGBuilder took 206.59ms. Allocated memory is still 56.6MB. Free memory was 28.2MB in the beginning and 33.4MB in the end (delta: -5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-29 12:03:08,621 INFO L158 Benchmark]: TraceAbstraction took 8088.22ms. Allocated memory was 56.6MB in the beginning and 121.6MB in the end (delta: 65.0MB). Free memory was 33.0MB in the beginning and 78.2MB in the end (delta: -45.2MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2021-08-29 12:03:08,621 INFO L158 Benchmark]: Witness Printer took 200.44ms. Allocated memory is still 121.6MB. Free memory was 78.2MB in the beginning and 75.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 12:03:08,622 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 46.1MB. Free memory was 28.7MB in the beginning and 28.7MB in the end (delta: 30.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 203.68ms. Allocated memory is still 56.6MB. Free memory was 41.4MB in the beginning and 31.2MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.94ms. Allocated memory is still 56.6MB. Free memory was 31.2MB in the beginning and 29.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.93ms. Allocated memory is still 56.6MB. Free memory was 29.4MB in the beginning and 28.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 206.59ms. Allocated memory is still 56.6MB. Free memory was 28.2MB in the beginning and 33.4MB in the end (delta: -5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 8088.22ms. Allocated memory was 56.6MB in the beginning and 121.6MB in the end (delta: 65.0MB). Free memory was 33.0MB in the beginning and 78.2MB in the end (delta: -45.2MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * Witness Printer took 200.44ms. Allocated memory is still 121.6MB. Free memory was 78.2MB in the beginning and 75.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] short a; [L25] long long n, x, y, z; [L26] a = __VERIFIER_nondet_unsigned_short() [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=1] [L33] EXPR counter++ VAL [counter=2] [L33] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=2] [L33] EXPR counter++ VAL [counter=3] [L33] COND FALSE !(counter++<2) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L17] reach_error() VAL [counter=3] - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 8019.06ms, OverallIterations: 12, TraceHistogramMax: 3, EmptinessCheckTime: 21.53ms, AutomataDifference: 1995.82ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 5.91ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 432 SdHoareTripleChecker+Valid, 1616.95ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 432 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1365.28ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 77 IncrementalHoareTripleChecker+Unchecked, 634 mSDsCounter, 148 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1585 IncrementalHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 148 mSolverCounterUnsat, 0 mSDtfsCounter, 1585 mSolverCounterSat, 9.91ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 353 GetRequests, 281 SyntacticMatches, 6 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 581.74ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=4, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 75.49ms AutomataMinimizationTime, 11 MinimizatonAttempts, 143 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 63.07ms SsaConstructionTime, 177.30ms SatisfiabilityAnalysisTime, 2653.06ms InterpolantComputationTime, 229 NumberOfCodeBlocks, 229 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 330 ConstructedInterpolants, 24 QuantifiedInterpolants, 3704 SizeOfPredicates, 34 NumberOfNonLiveVariables, 921 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 0/94 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 RESULT: Ultimate proved your program to be incorrect! [2021-08-29 12:03:08,647 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...