./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+newton_2_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_2_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8 --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 131b2ae9424ecd75292a5889f04853eea3cca0c3e4c679243c4666d6f4003ffe --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:31:21,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:31:21,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:31:21,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:31:21,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:31:21,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:31:21,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:31:21,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:31:21,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:31:21,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:31:21,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:31:21,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:31:21,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:31:21,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:31:21,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:31:21,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:31:21,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:31:21,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:31:21,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:31:21,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:31:21,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:31:21,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:31:21,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:31:21,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:31:21,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:31:21,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:31:21,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:31:21,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:31:21,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:31:21,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:31:21,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:31:21,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:31:21,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:31:21,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:31:21,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:31:21,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:31:21,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:31:21,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:31:21,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:31:21,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:31:21,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:31:21,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:31:21,496 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:31:21,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:31:21,497 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:31:21,497 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:31:21,498 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:31:21,498 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:31:21,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:31:21,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:31:21,499 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:31:21,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:31:21,499 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:31:21,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:31:21,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:31:21,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:31:21,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:31:21,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:31:21,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:31:21,501 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:31:21,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:31:21,501 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:31:21,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:31:21,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:31:21,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:31:21,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:31:21,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:31:21,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:31:21,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:31:21,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:31:21,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:31:21,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:31:21,503 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:31:21,503 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:31:21,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:31:21,504 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 131b2ae9424ecd75292a5889f04853eea3cca0c3e4c679243c4666d6f4003ffe [2022-11-16 11:31:21,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:31:21,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:31:21,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:31:21,824 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:31:21,825 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:31:21,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/gcd_4+newton_2_8.i [2022-11-16 11:31:21,898 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/data/44b8ae045/8bf295c9be5a42e5b50c661ecd624796/FLAGd11dc047d [2022-11-16 11:31:22,468 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:31:22,472 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i [2022-11-16 11:31:22,482 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/data/44b8ae045/8bf295c9be5a42e5b50c661ecd624796/FLAGd11dc047d [2022-11-16 11:31:22,816 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/data/44b8ae045/8bf295c9be5a42e5b50c661ecd624796 [2022-11-16 11:31:22,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:31:22,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:31:22,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:31:22,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:31:22,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:31:22,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:31:22" (1/1) ... [2022-11-16 11:31:22,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c2122b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:22, skipping insertion in model container [2022-11-16 11:31:22,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:31:22" (1/1) ... [2022-11-16 11:31:22,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:31:22,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:31:23,085 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i[1224,1237] [2022-11-16 11:31:23,109 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i[2827,2840] [2022-11-16 11:31:23,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:31:23,121 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:31:23,135 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i[1224,1237] [2022-11-16 11:31:23,146 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i[2827,2840] [2022-11-16 11:31:23,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:31:23,162 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:31:23,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:23 WrapperNode [2022-11-16 11:31:23,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:31:23,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:31:23,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:31:23,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:31:23,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:23" (1/1) ... [2022-11-16 11:31:23,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:23" (1/1) ... [2022-11-16 11:31:23,201 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 80 [2022-11-16 11:31:23,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:31:23,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:31:23,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:31:23,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:31:23,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:23" (1/1) ... [2022-11-16 11:31:23,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:23" (1/1) ... [2022-11-16 11:31:23,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:23" (1/1) ... [2022-11-16 11:31:23,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:23" (1/1) ... [2022-11-16 11:31:23,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:23" (1/1) ... [2022-11-16 11:31:23,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:23" (1/1) ... [2022-11-16 11:31:23,227 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:23" (1/1) ... [2022-11-16 11:31:23,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:23" (1/1) ... [2022-11-16 11:31:23,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:31:23,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:31:23,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:31:23,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:31:23,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:23" (1/1) ... [2022-11-16 11:31:23,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:31:23,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:31:23,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:31:23,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:31:23,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:31:23,321 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-16 11:31:23,321 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-16 11:31:23,321 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-16 11:31:23,324 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-16 11:31:23,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:31:23,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:31:23,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:31:23,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:31:23,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:31:23,424 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:31:23,427 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:31:23,684 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:31:23,696 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:31:23,696 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:31:23,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:31:23 BoogieIcfgContainer [2022-11-16 11:31:23,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:31:23,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:31:23,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:31:23,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:31:23,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:31:22" (1/3) ... [2022-11-16 11:31:23,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429304e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:31:23, skipping insertion in model container [2022-11-16 11:31:23,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:23" (2/3) ... [2022-11-16 11:31:23,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429304e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:31:23, skipping insertion in model container [2022-11-16 11:31:23,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:31:23" (3/3) ... [2022-11-16 11:31:23,720 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_2_8.i [2022-11-16 11:31:23,746 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:31:23,746 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 11:31:23,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:31:23,845 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4d6ab696, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:31:23,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 11:31:23,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 11:31:23,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:31:23,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:31:23,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:23,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:31:23,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:23,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1780479560, now seen corresponding path program 1 times [2022-11-16 11:31:23,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:23,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488537961] [2022-11-16 11:31:23,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:23,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:24,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:31:24,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488537961] [2022-11-16 11:31:24,095 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 11:31:24,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340338144] [2022-11-16 11:31:24,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:24,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:31:24,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:31:24,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:31:24,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:31:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:24,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:31:24,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:31:24,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:24,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:31:24,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340338144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:31:24,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:31:24,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:31:24,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091899018] [2022-11-16 11:31:24,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:31:24,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:31:24,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:31:24,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:31:24,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:31:24,371 INFO L87 Difference]: Start difference. First operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:24,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:31:24,453 INFO L93 Difference]: Finished difference Result 91 states and 124 transitions. [2022-11-16 11:31:24,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:31:24,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 11:31:24,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:31:24,466 INFO L225 Difference]: With dead ends: 91 [2022-11-16 11:31:24,467 INFO L226 Difference]: Without dead ends: 42 [2022-11-16 11:31:24,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:31:24,476 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 11 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:31:24,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 92 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:31:24,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-16 11:31:24,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2022-11-16 11:31:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:31:24,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-11-16 11:31:24,531 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 11 [2022-11-16 11:31:24,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:31:24,532 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-11-16 11:31:24,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:24,533 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-11-16 11:31:24,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:31:24,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:31:24,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:24,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:31:24,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:31:24,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:31:24,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:24,742 INFO L85 PathProgramCache]: Analyzing trace with hash -5472198, now seen corresponding path program 1 times [2022-11-16 11:31:24,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:24,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415254387] [2022-11-16 11:31:24,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:24,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:24,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:31:24,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415254387] [2022-11-16 11:31:24,776 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 11:31:24,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412369362] [2022-11-16 11:31:24,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:24,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:31:24,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:31:24,779 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:31:24,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:31:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:24,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:31:24,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:31:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:24,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:31:24,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412369362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:31:24,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:31:24,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:31:24,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816911370] [2022-11-16 11:31:24,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:31:24,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:31:24,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:31:24,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:31:24,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:31:24,879 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:24,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:31:24,907 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2022-11-16 11:31:24,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:31:24,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 11:31:24,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:31:24,910 INFO L225 Difference]: With dead ends: 64 [2022-11-16 11:31:24,910 INFO L226 Difference]: Without dead ends: 47 [2022-11-16 11:31:24,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:31:24,912 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:31:24,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 72 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:31:24,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-16 11:31:24,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2022-11-16 11:31:24,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 28 states have internal predecessors, (31), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:31:24,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2022-11-16 11:31:24,924 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 11 [2022-11-16 11:31:24,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:31:24,925 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2022-11-16 11:31:24,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:24,926 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2022-11-16 11:31:24,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 11:31:24,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:31:24,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:24,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 11:31:25,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:31:25,133 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:31:25,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:25,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1715037691, now seen corresponding path program 1 times [2022-11-16 11:31:25,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:25,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351227515] [2022-11-16 11:31:25,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:25,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:25,161 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:31:25,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [537322310] [2022-11-16 11:31:25,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:25,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:31:25,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:31:25,171 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:31:25,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:31:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:25,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:31:25,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:31:25,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:25,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:31:25,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:31:25,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351227515] [2022-11-16 11:31:25,349 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:31:25,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537322310] [2022-11-16 11:31:25,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537322310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:31:25,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:31:25,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:31:25,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799296559] [2022-11-16 11:31:25,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:31:25,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:31:25,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:31:25,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:31:25,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:31:25,353 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:25,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:31:25,383 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2022-11-16 11:31:25,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:31:25,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 11:31:25,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:31:25,385 INFO L225 Difference]: With dead ends: 53 [2022-11-16 11:31:25,387 INFO L226 Difference]: Without dead ends: 40 [2022-11-16 11:31:25,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:31:25,391 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:31:25,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:31:25,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-16 11:31:25,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-16 11:31:25,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:31:25,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2022-11-16 11:31:25,406 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 15 [2022-11-16 11:31:25,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:31:25,407 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2022-11-16 11:31:25,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:25,408 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2022-11-16 11:31:25,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 11:31:25,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:31:25,410 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:25,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:31:25,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:31:25,615 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:31:25,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:25,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1030095042, now seen corresponding path program 1 times [2022-11-16 11:31:25,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:25,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090923392] [2022-11-16 11:31:25,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:25,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:25,629 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:31:25,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619224432] [2022-11-16 11:31:25,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:25,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:31:25,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:31:25,631 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:31:25,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:31:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:25,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:31:25,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:31:25,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:25,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:31:25,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:25,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:31:25,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090923392] [2022-11-16 11:31:25,810 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:31:25,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619224432] [2022-11-16 11:31:25,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619224432] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:31:25,811 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:31:25,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-16 11:31:25,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018274959] [2022-11-16 11:31:25,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:31:25,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:31:25,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:31:25,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:31:25,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:31:25,813 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:25,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:31:25,871 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2022-11-16 11:31:25,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:31:25,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 11:31:25,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:31:25,877 INFO L225 Difference]: With dead ends: 57 [2022-11-16 11:31:25,879 INFO L226 Difference]: Without dead ends: 44 [2022-11-16 11:31:25,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:31:25,880 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:31:25,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 100 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:31:25,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-16 11:31:25,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-16 11:31:25,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.15625) internal successors, (37), 34 states have internal predecessors, (37), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:31:25,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2022-11-16 11:31:25,891 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 17 [2022-11-16 11:31:25,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:31:25,892 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2022-11-16 11:31:25,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:25,892 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2022-11-16 11:31:25,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 11:31:25,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:31:25,893 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:25,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:31:26,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:31:26,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:31:26,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:26,100 INFO L85 PathProgramCache]: Analyzing trace with hash -626365316, now seen corresponding path program 2 times [2022-11-16 11:31:26,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:26,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872177227] [2022-11-16 11:31:26,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:26,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:26,116 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:31:26,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294845747] [2022-11-16 11:31:26,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:31:26,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:31:26,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:31:26,136 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:31:26,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:31:26,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:31:26,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:31:26,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:31:26,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:31:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:26,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:31:26,451 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:26,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:31:26,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872177227] [2022-11-16 11:31:26,452 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:31:26,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294845747] [2022-11-16 11:31:26,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294845747] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:31:26,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:31:26,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-16 11:31:26,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348309929] [2022-11-16 11:31:26,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:31:26,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:31:26,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:31:26,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:31:26,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:31:26,455 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:26,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:31:26,560 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2022-11-16 11:31:26,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:31:26,561 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-16 11:31:26,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:31:26,562 INFO L225 Difference]: With dead ends: 65 [2022-11-16 11:31:26,562 INFO L226 Difference]: Without dead ends: 50 [2022-11-16 11:31:26,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:31:26,563 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 16 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:31:26,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 196 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:31:26,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-16 11:31:26,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-11-16 11:31:26,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 40 states have internal predecessors, (44), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:31:26,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2022-11-16 11:31:26,572 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 21 [2022-11-16 11:31:26,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:31:26,572 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2022-11-16 11:31:26,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:26,572 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2022-11-16 11:31:26,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 11:31:26,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:31:26,574 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:26,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:31:26,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:31:26,779 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:31:26,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:26,780 INFO L85 PathProgramCache]: Analyzing trace with hash 2101905688, now seen corresponding path program 1 times [2022-11-16 11:31:26,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:26,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705854881] [2022-11-16 11:31:26,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:26,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:31:26,801 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:31:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:31:26,836 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:31:26,836 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:31:26,838 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-16 11:31:26,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-16 11:31:26,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:31:26,844 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-11-16 11:31:26,847 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:31:26,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:31:26 BoogieIcfgContainer [2022-11-16 11:31:26,876 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:31:26,887 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:31:26,888 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:31:26,888 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:31:26,888 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:31:23" (3/4) ... [2022-11-16 11:31:26,891 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 11:31:26,892 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:31:26,892 INFO L158 Benchmark]: Toolchain (without parser) took 4071.89ms. Allocated memory is still 134.2MB. Free memory was 96.5MB in the beginning and 110.0MB in the end (delta: -13.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:31:26,892 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 134.2MB. Free memory is still 112.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:31:26,893 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.74ms. Allocated memory is still 134.2MB. Free memory was 96.2MB in the beginning and 109.0MB in the end (delta: -12.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:31:26,893 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.37ms. Allocated memory is still 134.2MB. Free memory was 109.0MB in the beginning and 106.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:31:26,893 INFO L158 Benchmark]: Boogie Preprocessor took 27.57ms. Allocated memory is still 134.2MB. Free memory was 106.9MB in the beginning and 105.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:31:26,894 INFO L158 Benchmark]: RCFGBuilder took 467.34ms. Allocated memory is still 134.2MB. Free memory was 105.6MB in the beginning and 93.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 11:31:26,894 INFO L158 Benchmark]: TraceAbstraction took 3175.79ms. Allocated memory is still 134.2MB. Free memory was 92.8MB in the beginning and 45.7MB in the end (delta: 47.1MB). Peak memory consumption was 49.2MB. Max. memory is 16.1GB. [2022-11-16 11:31:26,894 INFO L158 Benchmark]: Witness Printer took 4.35ms. Allocated memory is still 134.2MB. Free memory is still 110.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:31:26,896 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 134.2MB. Free memory is still 112.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.74ms. Allocated memory is still 134.2MB. Free memory was 96.2MB in the beginning and 109.0MB in the end (delta: -12.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.37ms. Allocated memory is still 134.2MB. Free memory was 109.0MB in the beginning and 106.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.57ms. Allocated memory is still 134.2MB. Free memory was 106.9MB in the beginning and 105.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 467.34ms. Allocated memory is still 134.2MB. Free memory was 105.6MB in the beginning and 93.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3175.79ms. Allocated memory is still 134.2MB. Free memory was 92.8MB in the beginning and 45.7MB in the end (delta: 47.1MB). Peak memory consumption was 49.2MB. Max. memory is 16.1GB. * Witness Printer took 4.35ms. Allocated memory is still 134.2MB. Free memory is still 110.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 109]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 102. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L100] CALL, EXPR f(IN) VAL [\old(x)=113] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=113, x=113] [L100] RET, EXPR f(IN) VAL [f(IN)=110, IN=113] [L100] CALL, EXPR fp(IN) VAL [\old(x)=113] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=113, x=113] [L100] RET, EXPR fp(IN) VAL [f(IN)=110, fp(IN)=109, IN=113] [L100] float x = IN - f(IN)/fp(IN); [L102] CALL, EXPR f(x) VAL [\old(x)=111] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=111, x=111] [L102] RET, EXPR f(x) VAL [f(x)=114, IN=113, x=111] [L102] CALL, EXPR fp(x) VAL [\old(x)=111] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=111, x=111] [L102] RET, EXPR fp(x) VAL [f(x)=114, fp(x)=112, IN=113, x=111] [L102] x = x - f(x)/fp(x) [L108] COND TRUE !(x < 0.1) VAL [IN=113] [L109] reach_error() VAL [IN=113] - UnprovableResult [Line: 27]: 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 4 procedures, 43 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 528 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 332 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 123 IncrementalHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 196 mSDtfsCounter, 123 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=5, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 343 SizeOfPredicates, 17 NumberOfNonLiveVariables, 412 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 17/41 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 could not prove your program: unable to determine feasibility of some traces [2022-11-16 11:31:26,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_2_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8 --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 131b2ae9424ecd75292a5889f04853eea3cca0c3e4c679243c4666d6f4003ffe --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:31:29,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:31:29,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:31:29,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:31:29,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:31:29,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:31:29,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:31:29,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:31:29,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:31:29,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:31:29,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:31:29,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:31:29,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:31:29,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:31:29,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:31:29,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:31:29,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:31:29,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:31:29,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:31:29,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:31:29,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:31:29,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:31:29,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:31:29,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:31:29,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:31:29,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:31:29,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:31:29,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:31:29,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:31:29,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:31:29,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:31:29,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:31:29,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:31:29,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:31:29,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:31:29,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:31:29,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:31:29,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:31:29,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:31:29,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:31:29,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:31:29,270 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-16 11:31:29,326 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:31:29,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:31:29,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:31:29,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:31:29,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:31:29,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:31:29,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:31:29,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:31:29,331 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:31:29,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:31:29,332 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:31:29,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:31:29,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:31:29,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:31:29,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:31:29,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:31:29,333 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:31:29,334 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 11:31:29,334 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 11:31:29,334 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:31:29,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:31:29,334 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:31:29,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:31:29,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:31:29,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:31:29,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:31:29,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:31:29,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:31:29,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:31:29,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:31:29,336 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 11:31:29,337 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 11:31:29,337 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:31:29,337 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:31:29,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:31:29,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 11:31:29,338 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 131b2ae9424ecd75292a5889f04853eea3cca0c3e4c679243c4666d6f4003ffe [2022-11-16 11:31:29,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:31:29,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:31:29,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:31:29,762 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:31:29,763 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:31:29,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/gcd_4+newton_2_8.i [2022-11-16 11:31:29,829 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/data/2ec13987d/fd8f11dd57094f35be29e0e174c5de23/FLAG87cf38d8d [2022-11-16 11:31:30,378 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:31:30,383 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i [2022-11-16 11:31:30,392 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/data/2ec13987d/fd8f11dd57094f35be29e0e174c5de23/FLAG87cf38d8d [2022-11-16 11:31:30,735 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/data/2ec13987d/fd8f11dd57094f35be29e0e174c5de23 [2022-11-16 11:31:30,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:31:30,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:31:30,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:31:30,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:31:30,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:31:30,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:31:30" (1/1) ... [2022-11-16 11:31:30,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bbb3448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:30, skipping insertion in model container [2022-11-16 11:31:30,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:31:30" (1/1) ... [2022-11-16 11:31:30,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:31:30,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:31:30,939 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i[1224,1237] [2022-11-16 11:31:30,971 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i[2827,2840] [2022-11-16 11:31:30,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:31:30,988 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:31:31,035 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i[1224,1237] [2022-11-16 11:31:31,048 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i[2827,2840] [2022-11-16 11:31:31,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:31:31,066 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:31:31,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:31 WrapperNode [2022-11-16 11:31:31,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:31:31,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:31:31,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:31:31,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:31:31,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:31" (1/1) ... [2022-11-16 11:31:31,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:31" (1/1) ... [2022-11-16 11:31:31,146 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 77 [2022-11-16 11:31:31,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:31:31,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:31:31,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:31:31,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:31:31,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:31" (1/1) ... [2022-11-16 11:31:31,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:31" (1/1) ... [2022-11-16 11:31:31,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:31" (1/1) ... [2022-11-16 11:31:31,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:31" (1/1) ... [2022-11-16 11:31:31,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:31" (1/1) ... [2022-11-16 11:31:31,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:31" (1/1) ... [2022-11-16 11:31:31,210 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:31" (1/1) ... [2022-11-16 11:31:31,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:31" (1/1) ... [2022-11-16 11:31:31,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:31:31,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:31:31,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:31:31,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:31:31,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:31" (1/1) ... [2022-11-16 11:31:31,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:31:31,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:31:31,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:31:31,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:31:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:31:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 11:31:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-16 11:31:31,309 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-16 11:31:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-16 11:31:31,310 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-16 11:31:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:31:31,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:31:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:31:31,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:31:31,389 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:31:31,391 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:31:40,447 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:31:40,457 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:31:40,457 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:31:40,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:31:40 BoogieIcfgContainer [2022-11-16 11:31:40,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:31:40,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:31:40,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:31:40,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:31:40,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:31:30" (1/3) ... [2022-11-16 11:31:40,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d6ab38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:31:40, skipping insertion in model container [2022-11-16 11:31:40,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:31" (2/3) ... [2022-11-16 11:31:40,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d6ab38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:31:40, skipping insertion in model container [2022-11-16 11:31:40,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:31:40" (3/3) ... [2022-11-16 11:31:40,472 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_2_8.i [2022-11-16 11:31:40,497 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:31:40,497 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 11:31:40,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:31:40,563 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@8f0c52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:31:40,563 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 11:31:40,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 11:31:40,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:31:40,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:31:40,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:40,585 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:31:40,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:40,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1780479560, now seen corresponding path program 1 times [2022-11-16 11:31:40,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:31:40,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038266314] [2022-11-16 11:31:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:40,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:31:40,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:31:40,615 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:31:40,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 11:31:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:40,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:31:40,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:31:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:40,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:31:40,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:31:40,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038266314] [2022-11-16 11:31:40,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038266314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:31:40,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:31:40,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:31:40,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421951516] [2022-11-16 11:31:40,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:31:40,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:31:40,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:31:41,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:31:41,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:31:41,023 INFO L87 Difference]: Start difference. First operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:41,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:31:41,198 INFO L93 Difference]: Finished difference Result 93 states and 127 transitions. [2022-11-16 11:31:41,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:31:41,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 11:31:41,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:31:41,211 INFO L225 Difference]: With dead ends: 93 [2022-11-16 11:31:41,212 INFO L226 Difference]: Without dead ends: 43 [2022-11-16 11:31:41,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:31:41,225 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 13 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:31:41,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 92 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:31:41,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-16 11:31:41,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2022-11-16 11:31:41,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:31:41,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-11-16 11:31:41,293 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 11 [2022-11-16 11:31:41,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:31:41,294 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-11-16 11:31:41,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:41,295 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-11-16 11:31:41,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:31:41,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:31:41,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:41,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:31:41,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:31:41,525 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:31:41,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:41,526 INFO L85 PathProgramCache]: Analyzing trace with hash 413626440, now seen corresponding path program 1 times [2022-11-16 11:31:41,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:31:41,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671549977] [2022-11-16 11:31:41,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:41,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:31:41,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:31:41,530 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:31:41,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 11:31:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:41,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:31:41,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:31:41,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:41,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:31:41,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:31:41,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671549977] [2022-11-16 11:31:41,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671549977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:31:41,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:31:41,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:31:41,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195649542] [2022-11-16 11:31:41,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:31:41,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:31:41,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:31:41,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:31:41,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:31:41,735 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:41,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:31:41,862 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2022-11-16 11:31:41,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:31:41,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 11:31:41,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:31:41,864 INFO L225 Difference]: With dead ends: 52 [2022-11-16 11:31:41,865 INFO L226 Difference]: Without dead ends: 38 [2022-11-16 11:31:41,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:31:41,867 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:31:41,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 70 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:31:41,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-16 11:31:41,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-16 11:31:41,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 28 states have internal predecessors, (31), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:31:41,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2022-11-16 11:31:41,890 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 13 [2022-11-16 11:31:41,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:31:41,891 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2022-11-16 11:31:41,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:41,891 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2022-11-16 11:31:41,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 11:31:41,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:31:41,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:41,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:31:42,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:31:42,118 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:31:42,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:42,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1715037691, now seen corresponding path program 1 times [2022-11-16 11:31:42,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:31:42,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318187788] [2022-11-16 11:31:42,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:42,121 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:31:42,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:31:42,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:31:42,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 11:31:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:42,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:31:42,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:31:42,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:42,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:31:42,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:31:42,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318187788] [2022-11-16 11:31:42,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318187788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:31:42,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:31:42,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:31:42,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583194483] [2022-11-16 11:31:42,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:31:42,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:31:42,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:31:42,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:31:42,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:31:42,511 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:42,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:31:42,604 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2022-11-16 11:31:42,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:31:42,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 11:31:42,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:31:42,612 INFO L225 Difference]: With dead ends: 53 [2022-11-16 11:31:42,613 INFO L226 Difference]: Without dead ends: 40 [2022-11-16 11:31:42,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:31:42,615 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:31:42,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:31:42,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-16 11:31:42,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-16 11:31:42,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:31:42,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2022-11-16 11:31:42,632 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 15 [2022-11-16 11:31:42,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:31:42,634 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2022-11-16 11:31:42,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:42,635 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2022-11-16 11:31:42,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 11:31:42,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:31:42,637 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:42,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:31:42,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:31:42,854 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:31:42,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:42,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1030095042, now seen corresponding path program 1 times [2022-11-16 11:31:42,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:31:42,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235119409] [2022-11-16 11:31:42,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:42,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:31:42,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:31:42,861 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:31:42,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 11:31:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:42,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:31:42,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:31:43,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:43,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:31:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:43,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:31:43,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235119409] [2022-11-16 11:31:43,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235119409] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:31:43,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:31:43,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-16 11:31:43,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597766025] [2022-11-16 11:31:43,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:31:43,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:31:43,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:31:43,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:31:43,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:31:43,605 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:43,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:31:43,821 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2022-11-16 11:31:43,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:31:43,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 11:31:43,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:31:43,823 INFO L225 Difference]: With dead ends: 57 [2022-11-16 11:31:43,823 INFO L226 Difference]: Without dead ends: 44 [2022-11-16 11:31:43,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:31:43,825 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:31:43,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 132 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:31:43,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-16 11:31:43,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-16 11:31:43,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.15625) internal successors, (37), 34 states have internal predecessors, (37), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:31:43,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2022-11-16 11:31:43,833 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 17 [2022-11-16 11:31:43,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:31:43,834 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2022-11-16 11:31:43,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:43,834 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2022-11-16 11:31:43,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 11:31:43,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:31:43,835 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:43,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:31:44,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:31:44,055 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:31:44,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:44,055 INFO L85 PathProgramCache]: Analyzing trace with hash -626365316, now seen corresponding path program 2 times [2022-11-16 11:31:44,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:31:44,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297153788] [2022-11-16 11:31:44,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:31:44,056 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:31:44,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:31:44,060 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:31:44,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 11:31:44,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:31:44,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:31:44,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:31:44,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:31:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:31:45,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:31:52,602 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:31:52,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:31:52,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297153788] [2022-11-16 11:31:52,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297153788] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:31:52,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:31:52,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-16 11:31:52,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400746621] [2022-11-16 11:31:52,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:31:52,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:31:52,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:31:52,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:31:52,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:31:52,604 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:13,633 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:32:31,937 WARN L233 SmtUtils]: Spent 7.20s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:32:51,356 WARN L233 SmtUtils]: Spent 14.09s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:32:56,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:32:56,276 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2022-11-16 11:32:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:32:56,315 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-16 11:32:56,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:32:56,317 INFO L225 Difference]: With dead ends: 68 [2022-11-16 11:32:56,318 INFO L226 Difference]: Without dead ends: 65 [2022-11-16 11:32:56,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 61.3s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:32:56,320 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 33 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:32:56,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 345 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-16 11:32:56,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-16 11:32:56,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2022-11-16 11:32:56,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 51 states have internal predecessors, (58), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 11:32:56,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2022-11-16 11:32:56,352 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 21 [2022-11-16 11:32:56,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:32:56,354 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2022-11-16 11:32:56,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:56,354 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2022-11-16 11:32:56,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 11:32:56,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:32:56,355 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:32:56,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:32:56,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:32:56,556 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:32:56,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:56,557 INFO L85 PathProgramCache]: Analyzing trace with hash 2101905688, now seen corresponding path program 1 times [2022-11-16 11:32:56,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:32:56,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648042843] [2022-11-16 11:32:56,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:56,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:32:56,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:32:56,559 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:32:56,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 11:33:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:33:20,717 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:33:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:33:44,078 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-16 11:33:44,078 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:33:44,079 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-16 11:33:44,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-16 11:33:44,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-16 11:33:44,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:44,285 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-11-16 11:33:44,292 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:33:44,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:33:44 BoogieIcfgContainer [2022-11-16 11:33:44,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:33:44,338 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:33:44,338 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:33:44,338 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:33:44,339 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:31:40" (3/4) ... [2022-11-16 11:33:44,341 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 11:33:44,384 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:33:44,384 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:33:44,385 INFO L158 Benchmark]: Toolchain (without parser) took 133644.02ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 37.6MB in the beginning and 48.0MB in the end (delta: -10.4MB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. [2022-11-16 11:33:44,385 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 58.7MB. Free memory was 39.5MB in the beginning and 39.5MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:33:44,386 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.84ms. Allocated memory is still 58.7MB. Free memory was 37.4MB in the beginning and 41.9MB in the end (delta: -4.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 11:33:44,386 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.32ms. Allocated memory is still 58.7MB. Free memory was 41.8MB in the beginning and 40.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:33:44,387 INFO L158 Benchmark]: Boogie Preprocessor took 72.98ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 38.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:33:44,387 INFO L158 Benchmark]: RCFGBuilder took 9236.69ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 38.3MB in the beginning and 53.5MB in the end (delta: -15.2MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2022-11-16 11:33:44,388 INFO L158 Benchmark]: TraceAbstraction took 123873.82ms. Allocated memory is still 71.3MB. Free memory was 52.7MB in the beginning and 50.1MB in the end (delta: 2.7MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2022-11-16 11:33:44,388 INFO L158 Benchmark]: Witness Printer took 46.73ms. Allocated memory is still 71.3MB. Free memory was 50.1MB in the beginning and 48.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:33:44,390 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 58.7MB. Free memory was 39.5MB in the beginning and 39.5MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.84ms. Allocated memory is still 58.7MB. Free memory was 37.4MB in the beginning and 41.9MB in the end (delta: -4.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.32ms. Allocated memory is still 58.7MB. Free memory was 41.8MB in the beginning and 40.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 72.98ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 38.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 9236.69ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 38.3MB in the beginning and 53.5MB in the end (delta: -15.2MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * TraceAbstraction took 123873.82ms. Allocated memory is still 71.3MB. Free memory was 52.7MB in the beginning and 50.1MB in the end (delta: 2.7MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. * Witness Printer took 46.73ms. Allocated memory is still 71.3MB. Free memory was 50.1MB in the beginning and 48.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 109]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L100] CALL, EXPR f(IN) VAL [\old(x)=1.197265625] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=1.197265625, \result=0.9324303865432739, x=1.197265625] [L100] RET, EXPR f(IN) VAL [f(IN)=0.9324303865432739, IN=1.197265625] [L100] CALL, EXPR fp(IN) VAL [\old(x)=1.197265625] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=1.197265625, \result=0.37298351526260376, x=1.197265625] [L100] RET, EXPR fp(IN) VAL [f(IN)=0.9324303865432739, fp(IN)=0.37298351526260376, IN=1.197265625] [L100] float x = IN - f(IN)/fp(IN); [L102] CALL, EXPR f(x) VAL [\old(x)=-1.3026583194732666] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=-1.3026583194732666, \result=-0.9667624831199646, x=-1.3026583194732666] [L102] RET, EXPR f(x) VAL [f(x)=-0.9667624831199646, IN=1.197265625, x=-1.3026583194732666] [L102] CALL, EXPR fp(x) VAL [\old(x)=-1.3026583194732666] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-1.3026583194732666, \result=0.2783077657222748, x=-1.3026583194732666] [L102] RET, EXPR fp(x) VAL [f(x)=-0.9667624831199646, fp(x)=0.2783077657222748, IN=1.197265625, x=-1.3026583194732666] [L102] x = x - f(x)/fp(x) [L108] COND TRUE !(x < 0.1) VAL [IN=1.197265625, x=2.1710588932037354] [L109] reach_error() VAL [IN=1.197265625, x=2.1710588932037354] - UnprovableResult [Line: 27]: 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 4 procedures, 43 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 123.7s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 64.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 56 SdHoareTripleChecker+Valid, 9.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 53 mSDsluCounter, 707 SdHoareTripleChecker+Invalid, 8.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 514 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 293 IncrementalHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 193 mSDtfsCounter, 293 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 61.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=5, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 24.5s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 477 SizeOfPredicates, 21 NumberOfNonLiveVariables, 238 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 7/41 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! [2022-11-16 11:33:44,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da0d1c-7e2d-4f0b-894c-27dbd893ea01/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE