./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_1+newton_2_3.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_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_2_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 9a3e0b52eabe0a038e4774a376f7ed1eb95ce84c8d3569b2d9d7df15f27e8bd7 --- 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 11:11:54,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:11:54,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:11:54,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:11:54,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:11:54,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:11:54,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:11:54,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:11:54,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:11:54,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:11:54,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:11:54,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:11:54,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:11:54,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:11:54,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:11:54,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:11:54,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:11:54,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:11:54,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:11:54,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:11:54,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:11:54,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:11:54,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:11:54,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:11:54,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:11:54,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:11:54,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:11:54,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:11:54,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:11:54,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:11:54,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:11:54,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:11:54,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:11:54,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:11:54,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:11:54,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:11:54,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:11:54,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:11:54,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:11:54,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:11:54,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:11:54,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:11:54,511 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:11:54,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:11:54,513 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:11:54,514 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:11:54,515 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:11:54,515 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:11:54,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:11:54,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:11:54,516 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:11:54,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:11:54,518 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:11:54,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:11:54,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:11:54,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:11:54,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:11:54,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:11:54,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:11:54,519 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:11:54,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:11:54,520 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:11:54,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:11:54,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:11:54,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:11:54,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:11:54,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:11:54,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:11:54,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:11:54,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:11:54,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:11:54,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:11:54,524 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:11:54,524 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:11:54,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:11:54,525 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_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a3e0b52eabe0a038e4774a376f7ed1eb95ce84c8d3569b2d9d7df15f27e8bd7 [2022-11-16 11:11:54,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:11:54,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:11:54,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:11:54,873 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:11:54,874 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:11:54,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/gcd_1+newton_2_3.i [2022-11-16 11:11:54,944 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/data/206af6679/6a66d5d029f542c2a157387aae0c86f8/FLAG9018645ee [2022-11-16 11:11:55,412 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:11:55,412 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/sv-benchmarks/c/combinations/gcd_1+newton_2_3.i [2022-11-16 11:11:55,418 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/data/206af6679/6a66d5d029f542c2a157387aae0c86f8/FLAG9018645ee [2022-11-16 11:11:55,799 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/data/206af6679/6a66d5d029f542c2a157387aae0c86f8 [2022-11-16 11:11:55,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:11:55,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:11:55,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:11:55,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:11:55,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:11:55,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:11:55" (1/1) ... [2022-11-16 11:11:55,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d57333e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:55, skipping insertion in model container [2022-11-16 11:11:55,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:11:55" (1/1) ... [2022-11-16 11:11:55,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:11:55,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:11:56,026 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_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/sv-benchmarks/c/combinations/gcd_1+newton_2_3.i[1226,1239] [2022-11-16 11:11:56,049 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_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/sv-benchmarks/c/combinations/gcd_1+newton_2_3.i[2807,2820] [2022-11-16 11:11:56,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:11:56,059 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:11:56,073 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_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/sv-benchmarks/c/combinations/gcd_1+newton_2_3.i[1226,1239] [2022-11-16 11:11:56,083 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_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/sv-benchmarks/c/combinations/gcd_1+newton_2_3.i[2807,2820] [2022-11-16 11:11:56,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:11:56,098 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:11:56,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:56 WrapperNode [2022-11-16 11:11:56,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:11:56,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:11:56,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:11:56,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:11:56,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:56" (1/1) ... [2022-11-16 11:11:56,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:56" (1/1) ... [2022-11-16 11:11:56,142 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2022-11-16 11:11:56,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:11:56,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:11:56,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:11:56,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:11:56,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:56" (1/1) ... [2022-11-16 11:11:56,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:56" (1/1) ... [2022-11-16 11:11:56,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:56" (1/1) ... [2022-11-16 11:11:56,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:56" (1/1) ... [2022-11-16 11:11:56,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:56" (1/1) ... [2022-11-16 11:11:56,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:56" (1/1) ... [2022-11-16 11:11:56,166 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:56" (1/1) ... [2022-11-16 11:11:56,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:56" (1/1) ... [2022-11-16 11:11:56,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:11:56,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:11:56,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:11:56,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:11:56,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:56" (1/1) ... [2022-11-16 11:11:56,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:11:56,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:11:56,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:11:56,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:11:56,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:11:56,253 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-16 11:11:56,253 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-16 11:11:56,253 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-16 11:11:56,254 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-16 11:11:56,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:11:56,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:11:56,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:11:56,329 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:11:56,331 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:11:56,515 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:11:56,522 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:11:56,523 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:11:56,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:11:56 BoogieIcfgContainer [2022-11-16 11:11:56,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:11:56,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:11:56,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:11:56,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:11:56,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:11:55" (1/3) ... [2022-11-16 11:11:56,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b527ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:11:56, skipping insertion in model container [2022-11-16 11:11:56,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:56" (2/3) ... [2022-11-16 11:11:56,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b527ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:11:56, skipping insertion in model container [2022-11-16 11:11:56,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:11:56" (3/3) ... [2022-11-16 11:11:56,545 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_2_3.i [2022-11-16 11:11:56,594 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:11:56,611 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 11:11:56,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:11:56,717 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;@5650b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:11:56,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 11:11:56,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:11:56,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:11:56,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:56,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:56,760 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:56,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:56,767 INFO L85 PathProgramCache]: Analyzing trace with hash -247750664, now seen corresponding path program 1 times [2022-11-16 11:11:56,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:56,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36951525] [2022-11-16 11:11:56,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:56,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:56,909 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:11:56,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863330905] [2022-11-16 11:11:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:56,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:56,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:11:56,915 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:11:56,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:11:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:56,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 11:11:57,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:11:57,021 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 11:11:57,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:11:57,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:57,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36951525] [2022-11-16 11:11:57,023 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:11:57,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863330905] [2022-11-16 11:11:57,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863330905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:57,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:57,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:11:57,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408029921] [2022-11-16 11:11:57,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:57,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:11:57,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:57,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:11:57,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:11:57,065 INFO L87 Difference]: Start difference. First operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:57,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:57,088 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2022-11-16 11:11:57,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:11:57,090 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 11:11:57,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:57,097 INFO L225 Difference]: With dead ends: 66 [2022-11-16 11:11:57,097 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 11:11:57,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:11:57,104 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:57,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:11:57,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 11:11:57,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-16 11:11:57,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:11:57,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-11-16 11:11:57,158 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 11 [2022-11-16 11:11:57,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:57,159 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-11-16 11:11:57,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:57,160 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-11-16 11:11:57,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:11:57,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:57,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:57,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:11:57,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 11:11:57,369 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:57,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:57,370 INFO L85 PathProgramCache]: Analyzing trace with hash -251444748, now seen corresponding path program 1 times [2022-11-16 11:11:57,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:57,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792564560] [2022-11-16 11:11:57,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:57,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:57,389 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:11:57,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [629605983] [2022-11-16 11:11:57,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:57,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:57,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:11:57,391 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:11:57,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:11:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:57,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:11:57,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:11:57,539 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 11:11:57,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:11:57,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:57,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792564560] [2022-11-16 11:11:57,540 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:11:57,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629605983] [2022-11-16 11:11:57,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629605983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:57,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:57,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:57,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831815455] [2022-11-16 11:11:57,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:57,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:11:57,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:57,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:11:57,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:11:57,544 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:57,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:57,581 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-11-16 11:11:57,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:11:57,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 11:11:57,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:57,584 INFO L225 Difference]: With dead ends: 36 [2022-11-16 11:11:57,585 INFO L226 Difference]: Without dead ends: 30 [2022-11-16 11:11:57,585 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 11:11:57,587 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:57,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:11:57,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-16 11:11:57,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-16 11:11:57,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:11:57,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-11-16 11:11:57,605 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2022-11-16 11:11:57,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:57,606 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-11-16 11:11:57,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:57,611 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-11-16 11:11:57,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:11:57,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:57,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:57,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:11:57,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:57,818 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:57,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:57,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1673157840, now seen corresponding path program 1 times [2022-11-16 11:11:57,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:57,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119162284] [2022-11-16 11:11:57,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:57,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:57,835 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:11:57,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943432874] [2022-11-16 11:11:57,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:57,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:57,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:11:57,839 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:11:57,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:11:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:57,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 11:11:57,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:11:57,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:57,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:11:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:58,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:58,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119162284] [2022-11-16 11:11:58,048 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:11:58,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943432874] [2022-11-16 11:11:58,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943432874] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:11:58,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:11:58,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-11-16 11:11:58,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973057437] [2022-11-16 11:11:58,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:11:58,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:11:58,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:58,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:11:58,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:11:58,054 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:58,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:58,162 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-11-16 11:11:58,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:11:58,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-16 11:11:58,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:58,166 INFO L225 Difference]: With dead ends: 36 [2022-11-16 11:11:58,169 INFO L226 Difference]: Without dead ends: 31 [2022-11-16 11:11:58,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:11:58,171 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:58,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 155 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:11:58,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-16 11:11:58,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-16 11:11:58,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:11:58,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-11-16 11:11:58,186 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 12 [2022-11-16 11:11:58,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:58,187 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-11-16 11:11:58,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:58,188 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-11-16 11:11:58,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:11:58,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:58,189 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:58,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:11:58,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:58,395 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:58,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:58,396 INFO L85 PathProgramCache]: Analyzing trace with hash -276630798, now seen corresponding path program 2 times [2022-11-16 11:11:58,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:58,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295404638] [2022-11-16 11:11:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:58,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:58,408 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:11:58,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [97226431] [2022-11-16 11:11:58,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:11:58,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:58,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:11:58,412 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:11:58,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:12:08,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:12:08,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:12:08,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-16 11:12:08,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:13:02,901 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_12| Int) (|v_ULTIMATE.start_gcd_test_~a#1_14| Int)) (and (< 0 |v_ULTIMATE.start_gcd_test_~a#1_14|) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_12|)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_12| |v_ULTIMATE.start_gcd_test_~a#1_14|) 0) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_14| |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod (mod (* 255 |v_ULTIMATE.start_gcd_test_~a#1_12|) 256) |v_ULTIMATE.start_gcd_test_~a#1_14|) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_12| 0))) (not (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0))) is different from false [2022-11-16 11:13:21,217 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_12| Int) (|v_ULTIMATE.start_gcd_test_~a#1_14| Int)) (and (< 0 |v_ULTIMATE.start_gcd_test_~a#1_14|) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_12|)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_12| |v_ULTIMATE.start_gcd_test_~a#1_14|) 0) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_14| |c_ULTIMATE.start_gcd_test_~a#1|) 256) 0) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod (mod (* 255 |v_ULTIMATE.start_gcd_test_~a#1_12|) 256) |v_ULTIMATE.start_gcd_test_~a#1_14|) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_12| 0))) (not (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0))) is different from false [2022-11-16 11:13:42,906 WARN L833 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_gcd_test_~a#1_12| Int) (|v_ULTIMATE.start_gcd_test_~a#1_14| Int)) (let ((.cse0 (mod (mod (mod (* 255 |v_ULTIMATE.start_gcd_test_~a#1_12|) 256) |v_ULTIMATE.start_gcd_test_~a#1_14|) 256))) (and (= .cse0 |c_ULTIMATE.start_gcd_test_#res#1|) (< 0 |v_ULTIMATE.start_gcd_test_~a#1_14|) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_12|)) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_14| .cse0) 256) 0) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_12| |v_ULTIMATE.start_gcd_test_~a#1_14|) 0) (not (= .cse0 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_12| 0)))) is different from false [2022-11-16 11:14:01,119 WARN L833 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_gcd_test_~a#1_12| Int) (|v_ULTIMATE.start_gcd_test_~a#1_14| Int)) (let ((.cse0 (mod (mod (mod (* 255 |v_ULTIMATE.start_gcd_test_~a#1_12|) 256) |v_ULTIMATE.start_gcd_test_~a#1_14|) 256))) (and (< 0 |v_ULTIMATE.start_gcd_test_~a#1_14|) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_12|)) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_14| .cse0) 256) 0) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_12| |v_ULTIMATE.start_gcd_test_~a#1_14|) 0) (not (= .cse0 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_12| 0)))) is different from false [2022-11-16 11:14:03,122 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_gcd_test_~a#1_12| Int) (|v_ULTIMATE.start_gcd_test_~a#1_14| Int)) (let ((.cse0 (mod (mod (mod (* 255 |v_ULTIMATE.start_gcd_test_~a#1_12|) 256) |v_ULTIMATE.start_gcd_test_~a#1_14|) 256))) (and (< 0 |v_ULTIMATE.start_gcd_test_~a#1_14|) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_12|)) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_14| .cse0) 256) 0) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_12| |v_ULTIMATE.start_gcd_test_~a#1_14|) 0) (not (= .cse0 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_12| 0)))) is different from true [2022-11-16 11:14:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-16 11:14:14,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:15:07,583 WARN L833 $PredicateComparison]: unable to prove that (or (let ((.cse27 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse18 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse28 (mod (+ .cse27 |c_ULTIMATE.start_gcd_test_~b#1|) 256)) (.cse29 (mod (+ .cse27 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256))) (let ((.cse9 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse13 (<= .cse29 127)) (.cse23 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse28) 256) 0))) (.cse8 (not .cse18)) (.cse25 (= .cse28 0)) (.cse2 (<= .cse28 127)) (.cse17 (mod .cse27 256))) (let ((.cse19 (<= .cse17 127)) (.cse12 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse29)) 256) 0))) (.cse3 (not .cse2)) (.cse15 (or .cse23 .cse8 .cse25)) (.cse6 (= .cse29 0)) (.cse7 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse29) 256) 0))) (.cse10 (not .cse13)) (.cse14 (not .cse9)) (.cse16 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse28)) 256) 0)))) (and (or (let ((.cse5 (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse17)) 256) 0)) .cse18))) (let ((.cse1 (or .cse14 (and (or .cse16 .cse8) .cse5))) (.cse4 (or .cse14 (and .cse5 .cse15)))) (and (or (let ((.cse0 (or (and .cse5 (or .cse6 .cse7 .cse8)) .cse9))) (and (or (and .cse0 .cse1) .cse2) (or .cse3 (and .cse4 .cse0)))) .cse10) (or (let ((.cse11 (or .cse9 (and (or .cse12 .cse8) .cse5)))) (and (or (and .cse1 .cse11) .cse2) (or (and .cse4 .cse11) .cse3))) .cse13)))) .cse19) (or (not .cse19) (let ((.cse22 (or .cse18 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse17) 256) 0)) (= .cse17 0))) (.cse24 (= .cse27 0))) (let ((.cse21 (or .cse14 (and .cse22 (or .cse24 .cse16 .cse8))))) (and (or (let ((.cse20 (or (and (or .cse24 .cse12 .cse8) .cse22) .cse9))) (and (or .cse2 (and .cse20 .cse21)) (or (and (or .cse14 (and .cse22 (or .cse23 .cse24 .cse8 .cse25))) .cse20) .cse3))) .cse13) (or (let ((.cse26 (or .cse9 (and .cse22 (or .cse24 .cse6 .cse7 .cse8))))) (and (or .cse3 (and (or .cse14 (and .cse22 .cse15)) .cse26)) (or (and .cse26 .cse21) .cse2))) .cse10)))))))))) (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) is different from false [2022-11-16 11:15:09,588 WARN L855 $PredicateComparison]: unable to prove that (or (let ((.cse27 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse18 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse28 (mod (+ .cse27 |c_ULTIMATE.start_gcd_test_~b#1|) 256)) (.cse29 (mod (+ .cse27 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256))) (let ((.cse9 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse13 (<= .cse29 127)) (.cse23 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse28) 256) 0))) (.cse8 (not .cse18)) (.cse25 (= .cse28 0)) (.cse2 (<= .cse28 127)) (.cse17 (mod .cse27 256))) (let ((.cse19 (<= .cse17 127)) (.cse12 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse29)) 256) 0))) (.cse3 (not .cse2)) (.cse15 (or .cse23 .cse8 .cse25)) (.cse6 (= .cse29 0)) (.cse7 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse29) 256) 0))) (.cse10 (not .cse13)) (.cse14 (not .cse9)) (.cse16 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse28)) 256) 0)))) (and (or (let ((.cse5 (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse17)) 256) 0)) .cse18))) (let ((.cse1 (or .cse14 (and (or .cse16 .cse8) .cse5))) (.cse4 (or .cse14 (and .cse5 .cse15)))) (and (or (let ((.cse0 (or (and .cse5 (or .cse6 .cse7 .cse8)) .cse9))) (and (or (and .cse0 .cse1) .cse2) (or .cse3 (and .cse4 .cse0)))) .cse10) (or (let ((.cse11 (or .cse9 (and (or .cse12 .cse8) .cse5)))) (and (or (and .cse1 .cse11) .cse2) (or (and .cse4 .cse11) .cse3))) .cse13)))) .cse19) (or (not .cse19) (let ((.cse22 (or .cse18 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse17) 256) 0)) (= .cse17 0))) (.cse24 (= .cse27 0))) (let ((.cse21 (or .cse14 (and .cse22 (or .cse24 .cse16 .cse8))))) (and (or (let ((.cse20 (or (and (or .cse24 .cse12 .cse8) .cse22) .cse9))) (and (or .cse2 (and .cse20 .cse21)) (or (and (or .cse14 (and .cse22 (or .cse23 .cse24 .cse8 .cse25))) .cse20) .cse3))) .cse13) (or (let ((.cse26 (or .cse9 (and .cse22 (or .cse24 .cse6 .cse7 .cse8))))) (and (or .cse3 (and (or .cse14 (and .cse22 .cse15)) .cse26)) (or (and .cse26 .cse21) .cse2))) .cse10)))))))))) (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) is different from true [2022-11-16 11:16:26,190 WARN L233 SmtUtils]: Spent 54.74s on a formula simplification. DAG size of input: 67 DAG size of output: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:16:47,643 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:17:06,398 WARN L855 $PredicateComparison]: unable to prove that (or (not (= (mod |c_ULTIMATE.start_main1_~x~0#1| |c_ULTIMATE.start_main1_~y~0#1|) 0)) (let ((.cse2 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (let ((.cse1 (<= .cse2 127))) (and (let ((.cse0 (mod (+ .cse2 (- 256)) |c_ULTIMATE.start_main1_~y~0#1|))) (or (not (= (mod (mod |c_ULTIMATE.start_main1_~y~0#1| (+ (- 256) (mod (+ .cse0 (* |c_ULTIMATE.start_main1_~y~0#1| 255)) 256))) 256) 0)) .cse1 (= .cse0 0))) (let ((.cse3 (mod (mod .cse2 |c_ULTIMATE.start_main1_~y~0#1|) 256))) (or (not .cse1) (not (= (mod (mod |c_ULTIMATE.start_main1_~y~0#1| .cse3) 256) 0)) (= .cse3 0)))))) (not (< 0 |c_ULTIMATE.start_main1_~y~0#1|)) (<= 0 |c_ULTIMATE.start_main1_~x~0#1|)) is different from true [2022-11-16 11:17:55,676 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main1_~y~0#1_6| Int) (|v_ULTIMATE.start_main1_~x~0#1_5| Int)) (let ((.cse0 (mod (mod (mod (* 255 |v_ULTIMATE.start_main1_~x~0#1_5|) 256) |v_ULTIMATE.start_main1_~y~0#1_6|) 256))) (or (= .cse0 0) (not (= 0 (mod |v_ULTIMATE.start_main1_~x~0#1_5| |v_ULTIMATE.start_main1_~y~0#1_6|))) (<= 0 |v_ULTIMATE.start_main1_~x~0#1_5|) (not (= (mod (mod |v_ULTIMATE.start_main1_~y~0#1_6| .cse0) 256) 0)) (< (+ 128 |v_ULTIMATE.start_main1_~x~0#1_5|) 0) (<= |v_ULTIMATE.start_main1_~y~0#1_6| 0)))) is different from false [2022-11-16 11:17:57,678 WARN L855 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main1_~y~0#1_6| Int) (|v_ULTIMATE.start_main1_~x~0#1_5| Int)) (let ((.cse0 (mod (mod (mod (* 255 |v_ULTIMATE.start_main1_~x~0#1_5|) 256) |v_ULTIMATE.start_main1_~y~0#1_6|) 256))) (or (= .cse0 0) (not (= 0 (mod |v_ULTIMATE.start_main1_~x~0#1_5| |v_ULTIMATE.start_main1_~y~0#1_6|))) (<= 0 |v_ULTIMATE.start_main1_~x~0#1_5|) (not (= (mod (mod |v_ULTIMATE.start_main1_~y~0#1_6| .cse0) 256) 0)) (< (+ 128 |v_ULTIMATE.start_main1_~x~0#1_5|) 0) (<= |v_ULTIMATE.start_main1_~y~0#1_6| 0)))) is different from true [2022-11-16 11:18:16,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-16 11:18:16,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:18:16,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295404638] [2022-11-16 11:18:16,381 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:18:16,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97226431] [2022-11-16 11:18:16,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97226431] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:18:16,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:18:16,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-16 11:18:16,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450865841] [2022-11-16 11:18:16,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:18:16,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:18:16,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:18:16,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:18:16,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=101, Unknown=19, NotChecked=182, Total=342 [2022-11-16 11:18:16,383 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 19 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:13,295 WARN L233 SmtUtils]: Spent 48.37s on a formula simplification. DAG size of input: 45 DAG size of output: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:19:15,362 WARN L833 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main1_~x~0#1| 127) (= (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|) 0) (<= |c_ULTIMATE.start_gcd_test_~a#1| 127) (<= |c_ULTIMATE.start_gcd_test_~b#1| 127) (<= 0 (+ |c_ULTIMATE.start_gcd_test_~a#1| 128)) (<= 0 (+ 128 |c_ULTIMATE.start_main1_~x~0#1|)) (<= |c_ULTIMATE.start_main1_~y~0#1| 127) (or (let ((.cse2 (mod (* |c_ULTIMATE.start_gcd_test_~a#1| 255) 256))) (let ((.cse0 (<= .cse2 127))) (and (let ((.cse1 (mod (mod .cse2 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (or (not .cse0) (= 0 .cse1) (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse1) 256) 0)))) (let ((.cse3 (mod (+ .cse2 (- 256)) |c_ULTIMATE.start_gcd_test_~b#1|))) (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) (mod (+ .cse3 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256))) 256) 0)) .cse0 (= .cse3 0)))))) (< |c_ULTIMATE.start_gcd_test_~b#1| 0) (not (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) (< 0 |c_ULTIMATE.start_gcd_test_~b#1|)) is different from false [2022-11-16 11:20:41,345 WARN L233 SmtUtils]: Spent 1.26m on a formula simplification. DAG size of input: 83 DAG size of output: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:21:43,966 WARN L233 SmtUtils]: Spent 32.95s on a formula simplification. DAG size of input: 45 DAG size of output: 40 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:21:45,975 WARN L833 $PredicateComparison]: unable to prove that (and (or (not (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) (not (<= |c_ULTIMATE.start_gcd_test_~a#1| 127)) (not (<= 0 (+ |c_ULTIMATE.start_gcd_test_~a#1| 128)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_12| Int) (|v_ULTIMATE.start_gcd_test_~a#1_14| Int)) (and (< 0 |v_ULTIMATE.start_gcd_test_~a#1_14|) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_12|)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_12| |v_ULTIMATE.start_gcd_test_~a#1_14|) 0) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_14| |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod (mod (* 255 |v_ULTIMATE.start_gcd_test_~a#1_12|) 256) |v_ULTIMATE.start_gcd_test_~a#1_14|) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_12| 0))) (not (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0))) is different from false [2022-11-16 11:21:46,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:46,520 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2022-11-16 11:21:46,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:21:46,521 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 11:21:46,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:46,522 INFO L225 Difference]: With dead ends: 40 [2022-11-16 11:21:46,522 INFO L226 Difference]: Without dead ends: 35 [2022-11-16 11:21:46,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 325.2s TimeCoverageRelationStatistics Valid=58, Invalid=159, Unknown=29, NotChecked=306, Total=552 [2022-11-16 11:21:46,524 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:46,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 219 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 112 Unchecked, 0.6s Time] [2022-11-16 11:21:46,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-16 11:21:46,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-11-16 11:21:46,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:21:46,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-11-16 11:21:46,533 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 13 [2022-11-16 11:21:46,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:46,533 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-11-16 11:21:46,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:21:46,533 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-11-16 11:21:46,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:21:46,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:46,534 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:46,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 11:21:46,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:21:46,739 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:21:46,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:46,740 INFO L85 PathProgramCache]: Analyzing trace with hash 403427572, now seen corresponding path program 1 times [2022-11-16 11:21:46,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:21:46,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539545959] [2022-11-16 11:21:46,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:46,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:21:46,758 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:21:46,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048695107] [2022-11-16 11:21:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:46,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:21:46,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:21:46,769 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:21:46,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:21:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:46,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 11:21:46,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:21:47,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:32,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 139 [2022-11-16 11:24:32,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:32,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539545959] [2022-11-16 11:24:32,656 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:24:32,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048695107] [2022-11-16 11:24:32,656 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-16 11:24:32,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 11:24:32,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:32,858 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:620) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 52 more [2022-11-16 11:24:32,863 INFO L158 Benchmark]: Toolchain (without parser) took 757058.95ms. Allocated memory is still 134.2MB. Free memory was 105.4MB in the beginning and 65.1MB in the end (delta: 40.2MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. [2022-11-16 11:24:32,864 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 96.5MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:24:32,864 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.74ms. Allocated memory is still 134.2MB. Free memory was 105.0MB in the beginning and 108.7MB in the end (delta: -3.7MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2022-11-16 11:24:32,865 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.43ms. Allocated memory is still 134.2MB. Free memory was 108.7MB in the beginning and 107.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:24:32,865 INFO L158 Benchmark]: Boogie Preprocessor took 26.62ms. Allocated memory is still 134.2MB. Free memory was 107.1MB in the beginning and 105.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:24:32,866 INFO L158 Benchmark]: RCFGBuilder took 354.77ms. Allocated memory is still 134.2MB. Free memory was 105.4MB in the beginning and 92.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 11:24:32,866 INFO L158 Benchmark]: TraceAbstraction took 756334.99ms. Allocated memory is still 134.2MB. Free memory was 92.4MB in the beginning and 65.1MB in the end (delta: 27.3MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2022-11-16 11:24:32,868 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 96.5MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 293.74ms. Allocated memory is still 134.2MB. Free memory was 105.0MB in the beginning and 108.7MB in the end (delta: -3.7MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.43ms. Allocated memory is still 134.2MB. Free memory was 108.7MB in the beginning and 107.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.62ms. Allocated memory is still 134.2MB. Free memory was 107.1MB in the beginning and 105.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 354.77ms. Allocated memory is still 134.2MB. Free memory was 105.4MB in the beginning and 92.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 756334.99ms. Allocated memory is still 134.2MB. Free memory was 92.4MB in the beginning and 65.1MB in the end (delta: 27.3MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_2_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 9a3e0b52eabe0a038e4774a376f7ed1eb95ce84c8d3569b2d9d7df15f27e8bd7 --- 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 11:24:35,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:24:35,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:24:35,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:24:35,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:24:35,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:24:35,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:24:35,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:24:35,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:24:35,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:24:35,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:24:35,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:24:35,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:24:35,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:24:35,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:24:35,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:24:35,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:24:35,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:24:35,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:24:35,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:24:35,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:24:35,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:24:35,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:24:35,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:24:35,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:24:35,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:24:35,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:24:35,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:24:35,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:24:35,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:24:35,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:24:35,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:24:35,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:24:35,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:24:35,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:24:35,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:24:35,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:24:35,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:24:35,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:24:35,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:24:35,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:24:35,385 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-16 11:24:35,414 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:24:35,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:24:35,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:24:35,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:24:35,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:24:35,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:24:35,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:24:35,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:24:35,418 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:24:35,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:24:35,418 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:24:35,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:24:35,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:24:35,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:24:35,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:24:35,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:24:35,419 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:24:35,420 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 11:24:35,420 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 11:24:35,420 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:24:35,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:24:35,421 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:24:35,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:24:35,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:24:35,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:24:35,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:24:35,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:24:35,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:24:35,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:24:35,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:24:35,423 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 11:24:35,423 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 11:24:35,423 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:24:35,423 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:24:35,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:24:35,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 11:24:35,424 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_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a3e0b52eabe0a038e4774a376f7ed1eb95ce84c8d3569b2d9d7df15f27e8bd7 [2022-11-16 11:24:35,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:24:35,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:24:35,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:24:35,922 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:24:35,923 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:24:35,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/gcd_1+newton_2_3.i [2022-11-16 11:24:36,014 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/data/0bfad77a4/15e8debc17b9482aac763b987770c2b0/FLAG918adf30e [2022-11-16 11:24:36,727 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:24:36,732 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/sv-benchmarks/c/combinations/gcd_1+newton_2_3.i [2022-11-16 11:24:36,742 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/data/0bfad77a4/15e8debc17b9482aac763b987770c2b0/FLAG918adf30e [2022-11-16 11:24:37,041 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/data/0bfad77a4/15e8debc17b9482aac763b987770c2b0 [2022-11-16 11:24:37,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:24:37,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:24:37,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:24:37,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:24:37,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:24:37,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:24:37" (1/1) ... [2022-11-16 11:24:37,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f0db9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:37, skipping insertion in model container [2022-11-16 11:24:37,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:24:37" (1/1) ... [2022-11-16 11:24:37,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:24:37,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:24:37,289 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_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/sv-benchmarks/c/combinations/gcd_1+newton_2_3.i[1226,1239] [2022-11-16 11:24:37,321 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_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/sv-benchmarks/c/combinations/gcd_1+newton_2_3.i[2807,2820] [2022-11-16 11:24:37,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:24:37,338 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:24:37,377 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_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/sv-benchmarks/c/combinations/gcd_1+newton_2_3.i[1226,1239] [2022-11-16 11:24:37,406 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_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/sv-benchmarks/c/combinations/gcd_1+newton_2_3.i[2807,2820] [2022-11-16 11:24:37,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:24:37,459 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:24:37,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:37 WrapperNode [2022-11-16 11:24:37,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:24:37,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:24:37,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:24:37,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:24:37,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:37" (1/1) ... [2022-11-16 11:24:37,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:37" (1/1) ... [2022-11-16 11:24:37,539 INFO L138 Inliner]: procedures = 28, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 80 [2022-11-16 11:24:37,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:24:37,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:24:37,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:24:37,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:24:37,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:37" (1/1) ... [2022-11-16 11:24:37,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:37" (1/1) ... [2022-11-16 11:24:37,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:37" (1/1) ... [2022-11-16 11:24:37,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:37" (1/1) ... [2022-11-16 11:24:37,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:37" (1/1) ... [2022-11-16 11:24:37,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:37" (1/1) ... [2022-11-16 11:24:37,603 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:37" (1/1) ... [2022-11-16 11:24:37,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:37" (1/1) ... [2022-11-16 11:24:37,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:24:37,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:24:37,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:24:37,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:24:37,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:37" (1/1) ... [2022-11-16 11:24:37,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:24:37,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:37,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:24:37,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:24:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:24:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 11:24:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-16 11:24:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-16 11:24:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-16 11:24:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-16 11:24:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:24:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:24:37,845 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:24:37,847 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:24:45,689 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:24:45,697 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:24:45,697 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:24:45,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:24:45 BoogieIcfgContainer [2022-11-16 11:24:45,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:24:45,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:24:45,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:24:45,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:24:45,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:24:37" (1/3) ... [2022-11-16 11:24:45,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4579c1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:24:45, skipping insertion in model container [2022-11-16 11:24:45,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:37" (2/3) ... [2022-11-16 11:24:45,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4579c1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:24:45, skipping insertion in model container [2022-11-16 11:24:45,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:24:45" (3/3) ... [2022-11-16 11:24:45,710 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_2_3.i [2022-11-16 11:24:45,734 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:24:45,734 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 11:24:45,831 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:24:45,839 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;@4512a3e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:24:45,839 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 11:24:45,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:24:45,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:24:45,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:45,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:45,869 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:45,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:45,876 INFO L85 PathProgramCache]: Analyzing trace with hash -247750664, now seen corresponding path program 1 times [2022-11-16 11:24:45,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:24:45,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978659188] [2022-11-16 11:24:45,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:45,893 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 11:24:45,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:24:45,900 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:24:45,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:24:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:46,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 11:24:46,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:46,115 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 11:24:46,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:46,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:24:46,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978659188] [2022-11-16 11:24:46,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978659188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:46,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:46,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:24:46,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242704060] [2022-11-16 11:24:46,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:46,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:24:46,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:24:46,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:24:46,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:24:46,181 INFO L87 Difference]: Start difference. First operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:46,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:46,224 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2022-11-16 11:24:46,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:24:46,226 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 11:24:46,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:46,244 INFO L225 Difference]: With dead ends: 66 [2022-11-16 11:24:46,253 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 11:24:46,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:24:46,262 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:46,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:24:46,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 11:24:46,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-16 11:24:46,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:24:46,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-11-16 11:24:46,323 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 11 [2022-11-16 11:24:46,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:46,324 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-11-16 11:24:46,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:46,326 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-11-16 11:24:46,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:24:46,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:46,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:46,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:24:46,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:24:46,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:46,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:46,545 INFO L85 PathProgramCache]: Analyzing trace with hash -251444748, now seen corresponding path program 1 times [2022-11-16 11:24:46,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:24:46,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944461128] [2022-11-16 11:24:46,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:46,546 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 11:24:46,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:24:46,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:24:46,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:24:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:46,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:24:46,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:46,786 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 11:24:46,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:46,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:24:46,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944461128] [2022-11-16 11:24:46,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944461128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:46,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:46,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:24:46,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379158750] [2022-11-16 11:24:46,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:46,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:24:46,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:24:46,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:24:46,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:24:46,792 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:46,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:46,884 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-11-16 11:24:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:24:46,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 11:24:46,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:46,886 INFO L225 Difference]: With dead ends: 36 [2022-11-16 11:24:46,886 INFO L226 Difference]: Without dead ends: 30 [2022-11-16 11:24:46,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 11:24:46,888 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:46,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:24:46,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-16 11:24:46,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-16 11:24:46,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:24:46,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-11-16 11:24:46,897 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2022-11-16 11:24:46,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:46,898 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-11-16 11:24:46,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:46,899 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-11-16 11:24:46,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:24:46,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:46,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:46,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:24:47,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:24:47,116 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:47,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:47,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1673157840, now seen corresponding path program 1 times [2022-11-16 11:24:47,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:24:47,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967570885] [2022-11-16 11:24:47,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:47,118 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 11:24:47,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:24:47,120 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:24:47,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:24:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:47,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:24:47,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:24:47,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:24:47,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:24:47,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967570885] [2022-11-16 11:24:47,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967570885] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:24:47,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:24:47,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-11-16 11:24:47,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943843202] [2022-11-16 11:24:47,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:24:47,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:24:47,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:24:47,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:24:47,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:24:47,834 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:48,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:48,391 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-11-16 11:24:48,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:24:48,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-16 11:24:48,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:48,394 INFO L225 Difference]: With dead ends: 36 [2022-11-16 11:24:48,394 INFO L226 Difference]: Without dead ends: 31 [2022-11-16 11:24:48,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:24:48,396 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:48,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 155 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:24:48,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-16 11:24:48,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-16 11:24:48,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:24:48,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-11-16 11:24:48,404 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 12 [2022-11-16 11:24:48,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:48,405 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-11-16 11:24:48,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:48,406 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-11-16 11:24:48,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:24:48,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:48,407 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:48,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:24:48,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:24:48,624 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:48,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:48,625 INFO L85 PathProgramCache]: Analyzing trace with hash -276630798, now seen corresponding path program 2 times [2022-11-16 11:24:48,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:24:48,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446676781] [2022-11-16 11:24:48,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:24:48,626 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 11:24:48,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:24:48,627 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:24:48,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:24:50,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:24:50,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:24:50,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 11:24:50,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:24:54,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:25:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:05,773 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:25:05,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446676781] [2022-11-16 11:25:05,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446676781] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:25:05,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:25:05,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2022-11-16 11:25:05,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898804491] [2022-11-16 11:25:05,774 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:25:05,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:25:05,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:25:05,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:25:05,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2022-11-16 11:25:05,776 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:07,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:25:17,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:25:17,592 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-11-16 11:25:17,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:25:17,598 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 11:25:17,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:25:17,599 INFO L225 Difference]: With dead ends: 44 [2022-11-16 11:25:17,599 INFO L226 Difference]: Without dead ends: 32 [2022-11-16 11:25:17,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=59, Invalid=150, Unknown=1, NotChecked=0, Total=210 [2022-11-16 11:25:17,601 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:25:17,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 190 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 10 Unchecked, 2.5s Time] [2022-11-16 11:25:17,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-16 11:25:17,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-16 11:25:17,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:25:17,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2022-11-16 11:25:17,611 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 13 [2022-11-16 11:25:17,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:25:17,612 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2022-11-16 11:25:17,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:17,613 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2022-11-16 11:25:17,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 11:25:17,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:25:17,614 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:17,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:25:17,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:25:17,819 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:25:17,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:17,820 INFO L85 PathProgramCache]: Analyzing trace with hash -326992466, now seen corresponding path program 1 times [2022-11-16 11:25:17,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:25:17,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154506913] [2022-11-16 11:25:17,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:17,821 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 11:25:17,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:25:17,822 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:25:17,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:25:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:18,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:25:18,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:25:18,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:25:19,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:25:19,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:25:19,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154506913] [2022-11-16 11:25:19,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154506913] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:25:19,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:25:19,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2022-11-16 11:25:19,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468108030] [2022-11-16 11:25:19,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:25:19,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:25:19,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:25:19,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:25:19,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:25:19,319 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:19,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:25:19,827 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2022-11-16 11:25:19,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:25:19,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 11:25:19,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:25:19,831 INFO L225 Difference]: With dead ends: 32 [2022-11-16 11:25:19,831 INFO L226 Difference]: Without dead ends: 20 [2022-11-16 11:25:19,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:25:19,833 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:25:19,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:25:19,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-16 11:25:19,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-16 11:25:19,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:25:19,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-11-16 11:25:19,839 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2022-11-16 11:25:19,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:25:19,839 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-11-16 11:25:19,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:19,840 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-11-16 11:25:19,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 11:25:19,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:25:19,841 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 11:25:19,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:25:20,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:25:20,042 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:25:20,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:20,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1535073882, now seen corresponding path program 1 times [2022-11-16 11:25:20,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:25:20,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506243895] [2022-11-16 11:25:20,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:20,044 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 11:25:20,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:25:20,046 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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 11:25:20,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f5c5ba-050c-4b83-b12a-f6c8a33c7ae9/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