./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_2_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_2_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8 --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 b041289a049a7233b2a378ca6fc5bbde9d5c291c849eb6ce585cee09751124ba --- 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-2329fc7 [2022-12-13 22:11:03,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:11:03,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:11:03,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:11:03,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:11:03,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:11:03,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:11:03,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:11:03,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:11:03,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:11:03,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:11:03,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:11:03,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:11:03,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:11:03,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:11:03,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:11:03,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:11:03,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:11:03,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:11:03,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:11:03,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:11:03,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:11:03,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:11:03,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:11:03,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:11:03,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:11:03,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:11:03,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:11:03,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:11:03,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:11:03,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:11:03,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:11:03,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:11:03,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:11:03,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:11:03,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:11:03,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:11:03,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:11:03,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:11:03,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:11:03,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:11:03,727 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 22:11:03,748 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:11:03,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:11:03,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:11:03,748 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:11:03,749 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:11:03,749 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:11:03,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:11:03,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:11:03,750 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:11:03,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:11:03,751 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:11:03,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:11:03,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:11:03,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:11:03,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:11:03,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:11:03,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:11:03,752 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:11:03,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:11:03,752 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:11:03,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:11:03,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:11:03,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:11:03,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:11:03,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:11:03,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:11:03,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:11:03,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:11:03,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:11:03,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:11:03,755 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:11:03,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:11:03,755 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:11:03,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:11:03,755 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:11:03,755 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b041289a049a7233b2a378ca6fc5bbde9d5c291c849eb6ce585cee09751124ba [2022-12-13 22:11:03,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:11:03,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:11:03,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:11:03,950 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:11:03,951 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:11:03,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/gcd_3+newton_2_5.i [2022-12-13 22:11:06,520 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:11:06,676 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:11:06,677 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/sv-benchmarks/c/combinations/gcd_3+newton_2_5.i [2022-12-13 22:11:06,682 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/data/b316a70fc/dc1e9833a0bf4319bdb9efbe9cdf889e/FLAGc77eb5acd [2022-12-13 22:11:06,691 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/data/b316a70fc/dc1e9833a0bf4319bdb9efbe9cdf889e [2022-12-13 22:11:06,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:11:06,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:11:06,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:11:06,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:11:06,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:11:06,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:11:06" (1/1) ... [2022-12-13 22:11:06,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ea7629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:06, skipping insertion in model container [2022-12-13 22:11:06,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:11:06" (1/1) ... [2022-12-13 22:11:06,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:11:06,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:11:06,871 WARN L237 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_eeeede0f-f506-4e9b-82d9-d3401f463364/sv-benchmarks/c/combinations/gcd_3+newton_2_5.i[1226,1239] [2022-12-13 22:11:06,894 WARN L237 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_eeeede0f-f506-4e9b-82d9-d3401f463364/sv-benchmarks/c/combinations/gcd_3+newton_2_5.i[2841,2854] [2022-12-13 22:11:06,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:11:06,906 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:11:06,919 WARN L237 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_eeeede0f-f506-4e9b-82d9-d3401f463364/sv-benchmarks/c/combinations/gcd_3+newton_2_5.i[1226,1239] [2022-12-13 22:11:06,929 WARN L237 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_eeeede0f-f506-4e9b-82d9-d3401f463364/sv-benchmarks/c/combinations/gcd_3+newton_2_5.i[2841,2854] [2022-12-13 22:11:06,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:11:06,944 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:11:06,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:06 WrapperNode [2022-12-13 22:11:06,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:11:06,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:11:06,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:11:06,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:11:06,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:06" (1/1) ... [2022-12-13 22:11:06,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:06" (1/1) ... [2022-12-13 22:11:06,981 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2022-12-13 22:11:06,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:11:06,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:11:06,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:11:06,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:11:06,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:06" (1/1) ... [2022-12-13 22:11:06,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:06" (1/1) ... [2022-12-13 22:11:06,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:06" (1/1) ... [2022-12-13 22:11:06,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:06" (1/1) ... [2022-12-13 22:11:06,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:06" (1/1) ... [2022-12-13 22:11:07,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:06" (1/1) ... [2022-12-13 22:11:07,002 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:06" (1/1) ... [2022-12-13 22:11:07,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:06" (1/1) ... [2022-12-13 22:11:07,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:11:07,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:11:07,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:11:07,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:11:07,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:06" (1/1) ... [2022-12-13 22:11:07,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:11:07,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:11:07,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:11:07,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:11:07,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:11:07,067 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-12-13 22:11:07,067 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-12-13 22:11:07,067 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-12-13 22:11:07,067 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-12-13 22:11:07,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:11:07,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:11:07,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:11:07,127 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:11:07,128 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:11:07,245 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:11:07,250 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:11:07,250 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 22:11:07,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:11:07 BoogieIcfgContainer [2022-12-13 22:11:07,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:11:07,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:11:07,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:11:07,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:11:07,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:11:06" (1/3) ... [2022-12-13 22:11:07,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7495da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:11:07, skipping insertion in model container [2022-12-13 22:11:07,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:06" (2/3) ... [2022-12-13 22:11:07,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7495da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:11:07, skipping insertion in model container [2022-12-13 22:11:07,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:11:07" (3/3) ... [2022-12-13 22:11:07,259 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_2_5.i [2022-12-13 22:11:07,273 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:11:07,273 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 22:11:07,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:11:07,315 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;@391e3292, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:11:07,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 22:11:07,319 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) [2022-12-13 22:11:07,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 22:11:07,325 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:11:07,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:11:07,326 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:11:07,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:11:07,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-12-13 22:11:07,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:11:07,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930163971] [2022-12-13 22:11:07,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:11:07,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:11:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:11:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:11:07,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:11:07,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930163971] [2022-12-13 22:11:07,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930163971] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:11:07,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:11:07,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:11:07,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549688615] [2022-12-13 22:11:07,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:11:07,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:11:07,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:11:07,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:11:07,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:11:07,597 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 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:11:07,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:11:07,643 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2022-12-13 22:11:07,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:11:07,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-13 22:11:07,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:11:07,650 INFO L225 Difference]: With dead ends: 90 [2022-12-13 22:11:07,650 INFO L226 Difference]: Without dead ends: 36 [2022-12-13 22:11:07,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:11:07,655 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 23 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:11:07,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 119 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:11:07,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-13 22:11:07,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2022-12-13 22:11:07,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 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) [2022-12-13 22:11:07,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-12-13 22:11:07,684 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2022-12-13 22:11:07,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:11:07,684 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-12-13 22:11:07,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:11:07,685 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-12-13 22:11:07,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 22:11:07,686 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:11:07,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:11:07,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:11:07,686 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:11:07,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:11:07,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1776235347, now seen corresponding path program 1 times [2022-12-13 22:11:07,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:11:07,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105795780] [2022-12-13 22:11:07,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:11:07,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:11:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:11:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:11:07,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:11:07,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105795780] [2022-12-13 22:11:07,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105795780] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:11:07,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:11:07,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:11:07,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890064792] [2022-12-13 22:11:07,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:11:07,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:11:07,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:11:07,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:11:07,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:11:07,856 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2022-12-13 22:11:07,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:11:07,914 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-12-13 22:11:07,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:11:07,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 [2022-12-13 22:11:07,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:11:07,915 INFO L225 Difference]: With dead ends: 36 [2022-12-13 22:11:07,916 INFO L226 Difference]: Without dead ends: 30 [2022-12-13 22:11:07,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:11:07,917 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:11:07,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 130 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:11:07,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-12-13 22:11:07,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-12-13 22:11:07,923 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) [2022-12-13 22:11:07,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-12-13 22:11:07,924 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2022-12-13 22:11:07,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:11:07,925 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-12-13 22:11:07,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2022-12-13 22:11:07,925 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-12-13 22:11:07,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 22:11:07,926 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:11:07,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:11:07,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 22:11:07,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:11:07,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:11:07,928 INFO L85 PathProgramCache]: Analyzing trace with hash 830014046, now seen corresponding path program 1 times [2022-12-13 22:11:07,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:11:07,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515024764] [2022-12-13 22:11:07,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:11:07,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:11:07,942 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 22:11:07,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747844951] [2022-12-13 22:11:07,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:11:07,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:11:07,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:11:07,944 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:11:07,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 22:11:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:11:07,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 22:11:08,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:11:08,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:11:08,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:11:17,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:11:17,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515024764] [2022-12-13 22:11:17,657 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 22:11:17,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 139 [2022-12-13 22:11:17,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747844951] [2022-12-13 22:11:17,658 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-12-13 22:11:17,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-13 22:11:17,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:11:17,861 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_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:898) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:772) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:346) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$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:337) 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) ... 45 more [2022-12-13 22:11:17,864 INFO L158 Benchmark]: Toolchain (without parser) took 11169.20ms. Allocated memory was 115.3MB in the beginning and 159.4MB in the end (delta: 44.0MB). Free memory was 81.2MB in the beginning and 96.5MB in the end (delta: -15.3MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2022-12-13 22:11:17,864 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 115.3MB. Free memory was 79.9MB in the beginning and 79.8MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:11:17,864 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.57ms. Allocated memory is still 115.3MB. Free memory was 81.2MB in the beginning and 69.8MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 22:11:17,865 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.15ms. Allocated memory is still 115.3MB. Free memory was 69.8MB in the beginning and 68.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:11:17,865 INFO L158 Benchmark]: Boogie Preprocessor took 22.33ms. Allocated memory is still 115.3MB. Free memory was 67.7MB in the beginning and 66.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:11:17,865 INFO L158 Benchmark]: RCFGBuilder took 246.89ms. Allocated memory is still 115.3MB. Free memory was 66.5MB in the beginning and 54.9MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 22:11:17,866 INFO L158 Benchmark]: TraceAbstraction took 10609.25ms. Allocated memory was 115.3MB in the beginning and 159.4MB in the end (delta: 44.0MB). Free memory was 54.0MB in the beginning and 96.5MB in the end (delta: -42.5MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2022-12-13 22:11:17,868 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 115.3MB. Free memory was 79.9MB in the beginning and 79.8MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.57ms. Allocated memory is still 115.3MB. Free memory was 81.2MB in the beginning and 69.8MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.15ms. Allocated memory is still 115.3MB. Free memory was 69.8MB in the beginning and 68.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.33ms. Allocated memory is still 115.3MB. Free memory was 67.7MB in the beginning and 66.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 246.89ms. Allocated memory is still 115.3MB. Free memory was 66.5MB in the beginning and 54.9MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 10609.25ms. Allocated memory was 115.3MB in the beginning and 159.4MB in the end (delta: 44.0MB). Free memory was 54.0MB in the beginning and 96.5MB in the end (delta: -42.5MB). Peak memory consumption was 4.1MB. 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_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_2_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8 --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 b041289a049a7233b2a378ca6fc5bbde9d5c291c849eb6ce585cee09751124ba --- 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-2329fc7 [2022-12-13 22:11:19,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:11:19,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:11:19,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:11:19,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:11:19,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:11:19,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:11:19,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:11:19,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:11:19,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:11:19,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:11:19,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:11:19,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:11:19,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:11:19,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:11:19,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:11:19,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:11:19,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:11:19,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:11:19,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:11:19,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:11:19,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:11:19,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:11:19,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:11:19,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:11:19,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:11:19,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:11:19,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:11:19,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:11:19,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:11:19,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:11:19,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:11:19,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:11:19,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:11:19,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:11:19,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:11:19,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:11:19,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:11:19,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:11:19,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:11:19,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:11:19,294 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-12-13 22:11:19,310 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:11:19,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:11:19,311 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:11:19,311 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:11:19,311 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:11:19,312 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:11:19,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:11:19,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:11:19,312 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:11:19,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:11:19,312 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:11:19,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:11:19,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:11:19,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:11:19,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:11:19,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:11:19,313 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 22:11:19,313 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 22:11:19,313 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 22:11:19,314 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:11:19,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:11:19,314 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:11:19,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:11:19,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:11:19,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:11:19,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:11:19,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:11:19,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:11:19,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:11:19,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:11:19,315 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 22:11:19,315 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 22:11:19,315 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:11:19,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:11:19,315 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:11:19,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:11:19,315 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 22:11:19,316 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:11:19,316 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b041289a049a7233b2a378ca6fc5bbde9d5c291c849eb6ce585cee09751124ba [2022-12-13 22:11:19,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:11:19,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:11:19,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:11:19,587 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:11:19,587 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:11:19,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/gcd_3+newton_2_5.i [2022-12-13 22:11:22,200 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:11:22,340 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:11:22,341 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/sv-benchmarks/c/combinations/gcd_3+newton_2_5.i [2022-12-13 22:11:22,347 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/data/1339a8e00/fdee54e9261649dcbc66dae6af6ba218/FLAG65cff3f95 [2022-12-13 22:11:22,358 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/data/1339a8e00/fdee54e9261649dcbc66dae6af6ba218 [2022-12-13 22:11:22,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:11:22,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:11:22,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:11:22,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:11:22,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:11:22,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:11:22" (1/1) ... [2022-12-13 22:11:22,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea24edf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:22, skipping insertion in model container [2022-12-13 22:11:22,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:11:22" (1/1) ... [2022-12-13 22:11:22,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:11:22,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:11:22,521 WARN L237 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_eeeede0f-f506-4e9b-82d9-d3401f463364/sv-benchmarks/c/combinations/gcd_3+newton_2_5.i[1226,1239] [2022-12-13 22:11:22,544 WARN L237 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_eeeede0f-f506-4e9b-82d9-d3401f463364/sv-benchmarks/c/combinations/gcd_3+newton_2_5.i[2841,2854] [2022-12-13 22:11:22,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:11:22,557 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:11:22,571 WARN L237 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_eeeede0f-f506-4e9b-82d9-d3401f463364/sv-benchmarks/c/combinations/gcd_3+newton_2_5.i[1226,1239] [2022-12-13 22:11:22,581 WARN L237 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_eeeede0f-f506-4e9b-82d9-d3401f463364/sv-benchmarks/c/combinations/gcd_3+newton_2_5.i[2841,2854] [2022-12-13 22:11:22,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:11:22,599 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:11:22,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:22 WrapperNode [2022-12-13 22:11:22,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:11:22,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:11:22,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:11:22,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:11:22,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:22" (1/1) ... [2022-12-13 22:11:22,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:22" (1/1) ... [2022-12-13 22:11:22,638 INFO L138 Inliner]: procedures = 28, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 80 [2022-12-13 22:11:22,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:11:22,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:11:22,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:11:22,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:11:22,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:22" (1/1) ... [2022-12-13 22:11:22,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:22" (1/1) ... [2022-12-13 22:11:22,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:22" (1/1) ... [2022-12-13 22:11:22,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:22" (1/1) ... [2022-12-13 22:11:22,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:22" (1/1) ... [2022-12-13 22:11:22,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:22" (1/1) ... [2022-12-13 22:11:22,671 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:22" (1/1) ... [2022-12-13 22:11:22,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:22" (1/1) ... [2022-12-13 22:11:22,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:11:22,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:11:22,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:11:22,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:11:22,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:22" (1/1) ... [2022-12-13 22:11:22,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:11:22,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:11:22,708 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:11:22,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:11:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:11:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 22:11:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-12-13 22:11:22,740 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-12-13 22:11:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-12-13 22:11:22,740 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-12-13 22:11:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:11:22,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:11:22,805 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:11:22,806 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:11:30,833 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:11:30,838 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:11:30,838 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 22:11:30,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:11:30 BoogieIcfgContainer [2022-12-13 22:11:30,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:11:30,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:11:30,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:11:30,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:11:30,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:11:22" (1/3) ... [2022-12-13 22:11:30,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77620912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:11:30, skipping insertion in model container [2022-12-13 22:11:30,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:11:22" (2/3) ... [2022-12-13 22:11:30,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77620912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:11:30, skipping insertion in model container [2022-12-13 22:11:30,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:11:30" (3/3) ... [2022-12-13 22:11:30,847 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_2_5.i [2022-12-13 22:11:30,861 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:11:30,861 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 22:11:30,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:11:30,899 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;@74d45bcd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:11:30,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 22:11:30,902 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) [2022-12-13 22:11:30,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 22:11:30,911 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:11:30,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:11:30,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:11:30,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:11:30,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-12-13 22:11:30,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:11:30,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296634259] [2022-12-13 22:11:30,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:11:30,926 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 [2022-12-13 22:11:30,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:11:30,927 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 22:11:30,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 22:11:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:11:30,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 22:11:30,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:11:31,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:11:31,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:11:31,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:11:31,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296634259] [2022-12-13 22:11:31,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296634259] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:11:31,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:11:31,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:11:31,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070796159] [2022-12-13 22:11:31,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:11:31,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:11:31,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:11:31,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:11:31,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:11:31,121 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 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) [2022-12-13 22:11:31,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:11:31,188 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2022-12-13 22:11:31,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:11:31,190 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 [2022-12-13 22:11:31,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:11:31,195 INFO L225 Difference]: With dead ends: 68 [2022-12-13 22:11:31,195 INFO L226 Difference]: Without dead ends: 30 [2022-12-13 22:11:31,197 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 [2022-12-13 22:11:31,199 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:11:31,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:11:31,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-12-13 22:11:31,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-12-13 22:11:31,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 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) [2022-12-13 22:11:31,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-12-13 22:11:31,224 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2022-12-13 22:11:31,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:11:31,224 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-12-13 22:11:31,224 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) [2022-12-13 22:11:31,224 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-12-13 22:11:31,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 22:11:31,225 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:11:31,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:11:31,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 22:11:31,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 22:11:31,426 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:11:31,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:11:31,427 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-12-13 22:11:31,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:11:31,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253907426] [2022-12-13 22:11:31,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:11:31,428 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 [2022-12-13 22:11:31,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:11:31,429 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 22:11:31,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 22:11:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:11:31,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 22:11:31,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:11:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:11:31,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:11:31,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:11:31,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253907426] [2022-12-13 22:11:31,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253907426] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:11:31,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:11:31,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:11:31,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739408684] [2022-12-13 22:11:31,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:11:31,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:11:31,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:11:31,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:11:31,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:11:31,578 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:11:31,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:11:31,692 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2022-12-13 22:11:31,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:11:31,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-13 22:11:31,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:11:31,693 INFO L225 Difference]: With dead ends: 46 [2022-12-13 22:11:31,693 INFO L226 Difference]: Without dead ends: 37 [2022-12-13 22:11:31,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:11:31,695 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:11:31,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 88 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:11:31,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-13 22:11:31,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2022-12-13 22:11:31,702 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) [2022-12-13 22:11:31,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-12-13 22:11:31,703 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2022-12-13 22:11:31,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:11:31,703 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-12-13 22:11:31,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:11:31,704 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-12-13 22:11:31,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 22:11:31,704 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:11:31,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:11:31,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 22:11:31,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 22:11:31,906 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:11:31,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:11:31,908 INFO L85 PathProgramCache]: Analyzing trace with hash -743724587, now seen corresponding path program 1 times [2022-12-13 22:11:31,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:11:31,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138795098] [2022-12-13 22:11:31,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:11:31,911 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 [2022-12-13 22:11:31,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:11:31,914 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 22:11:31,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 22:11:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:11:32,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 22:11:32,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:11:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:11:32,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:11:32,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:11:32,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138795098] [2022-12-13 22:11:32,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138795098] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:11:32,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:11:32,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:11:32,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963915143] [2022-12-13 22:11:32,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:11:32,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:11:32,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:11:32,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:11:32,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:11:32,396 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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) [2022-12-13 22:11:32,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:11:32,892 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-12-13 22:11:32,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:11:32,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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 [2022-12-13 22:11:32,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:11:32,893 INFO L225 Difference]: With dead ends: 37 [2022-12-13 22:11:32,894 INFO L226 Difference]: Without dead ends: 31 [2022-12-13 22:11:32,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 22:11:32,895 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:11:32,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 155 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 22:11:32,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-13 22:11:32,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-12-13 22:11:32,901 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) [2022-12-13 22:11:32,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-12-13 22:11:32,902 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2022-12-13 22:11:32,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:11:32,903 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-12-13 22:11:32,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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) [2022-12-13 22:11:32,903 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-12-13 22:11:32,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 22:11:32,904 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:11:32,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:11:32,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 22:11:33,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 22:11:33,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:11:33,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:11:33,108 INFO L85 PathProgramCache]: Analyzing trace with hash 830014046, now seen corresponding path program 1 times [2022-12-13 22:11:33,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:11:33,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044389403] [2022-12-13 22:11:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:11:33,112 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 [2022-12-13 22:11:33,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:11:33,116 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 22:11:33,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 22:11:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:11:33,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 22:11:33,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:11:35,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:11:35,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:11:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:11:52,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:11:52,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044389403] [2022-12-13 22:11:52,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044389403] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:11:52,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:11:52,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-12-13 22:11:52,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814680005] [2022-12-13 22:11:52,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:11:52,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 22:11:52,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:11:52,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 22:11:52,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=238, Unknown=5, NotChecked=0, Total=306 [2022-12-13 22:11:52,236 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:12:00,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 22:12:02,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 22:12:28,473 WARN L233 SmtUtils]: Spent 21.26s on a formula simplification. DAG size of input: 31 DAG size of output: 24 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:12:59,715 WARN L233 SmtUtils]: Spent 15.93s on a formula simplification. DAG size of input: 35 DAG size of output: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:13:28,342 WARN L233 SmtUtils]: Spent 16.23s on a formula simplification. DAG size of input: 39 DAG size of output: 32 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:13:52,230 WARN L233 SmtUtils]: Spent 17.98s on a formula simplification. DAG size of input: 42 DAG size of output: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:13:52,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:13:52,487 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2022-12-13 22:13:52,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 22:13:52,494 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-13 22:13:52,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:13:52,494 INFO L225 Difference]: With dead ends: 49 [2022-12-13 22:13:52,495 INFO L226 Difference]: Without dead ends: 35 [2022-12-13 22:13:52,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 129.7s TimeCoverageRelationStatistics Valid=242, Invalid=672, Unknown=16, NotChecked=0, Total=930 [2022-12-13 22:13:52,496 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 44 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:13:52,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 276 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-12-13 22:13:52,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-13 22:13:52,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-12-13 22:13:52,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 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) [2022-12-13 22:13:52,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-12-13 22:13:52,501 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 12 [2022-12-13 22:13:52,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:13:52,502 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-12-13 22:13:52,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:13:52,502 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-12-13 22:13:52,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 22:13:52,502 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:13:52,502 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:13:52,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 22:13:52,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 22:13:52,705 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:13:52,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:13:52,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1911673028, now seen corresponding path program 1 times [2022-12-13 22:13:52,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:13:52,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106663375] [2022-12-13 22:13:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:52,709 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 [2022-12-13 22:13:52,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:13:52,713 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 22:13:52,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 22:13:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:56,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 22:13:56,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:14:29,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:14:29,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:16:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:16:02,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:16:02,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106663375] [2022-12-13 22:16:02,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106663375] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:16:02,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:16:02,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-12-13 22:16:02,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533005702] [2022-12-13 22:16:02,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:16:02,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 22:16:02,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:16:02,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 22:16:02,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=363, Unknown=16, NotChecked=0, Total=462 [2022-12-13 22:16:02,242 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 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) [2022-12-13 22:16:03,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 22:16:11,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:16:23,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:16:40,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:16:43,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 22:16:47,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 22:16:49,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 22:16:51,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 22:17:28,523 WARN L233 SmtUtils]: Spent 20.48s on a formula simplification. DAG size of input: 38 DAG size of output: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:17:30,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 22:17:33,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 22:17:35,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 22:17:37,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 22:18:47,417 WARN L233 SmtUtils]: Spent 48.86s on a formula simplification. DAG size of input: 52 DAG size of output: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:18:50,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 22:18:52,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 22:18:55,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 22:18:57,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 22:19:00,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 22:19:02,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 22:19:05,127 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ sign_extend 24) |c_ULTIMATE.start_gcd_test_~a#1|)) (.cse8 ((_ sign_extend 24) |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse3 ((_ sign_extend 24) |c_ULTIMATE.start_main1_~x~0#1|)) (.cse12 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse2 .cse8))))) (let ((.cse10 (= .cse12 (_ bv0 32))) (.cse9 (not (bvsgt .cse3 (_ bv0 32))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_14| (_ BitVec 8))) (let ((.cse0 ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~a#1_14|))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse3 .cse0))))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| ((_ extract 7 0) (bvsrem .cse0 .cse1))) (not (= .cse1 (_ bv0 32))) (not (bvslt .cse0 (_ bv0 32))) (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse1 .cse2))) (_ bv0 32)))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_14| (_ BitVec 8))) (let ((.cse4 ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~a#1_14|))) (let ((.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse3 .cse4))))) (and (= ((_ extract 7 0) (bvsrem .cse4 .cse5)) |c_ULTIMATE.start_gcd_test_#res#1|) (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 ((_ sign_extend 24) |c_ULTIMATE.start_gcd_test_#res#1|)))) (_ bv0 32)) (not (= .cse5 (_ bv0 32))) (not (bvslt .cse4 (_ bv0 32))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_14| (_ BitVec 8))) (let ((.cse6 ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~a#1_14|))) (let ((.cse7 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse3 .cse6))))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| ((_ extract 7 0) (bvsrem .cse6 .cse7))) (not (= .cse7 (_ bv0 32))) (not (bvslt .cse6 (_ bv0 32))) (= |c_ULTIMATE.start_gcd_test_~b#1| ((_ extract 7 0) (bvsrem .cse7 .cse2))))))) (or (bvsge .cse3 .cse8) .cse9 (not .cse10)) (not (= .cse2 (_ bv0 32))) (let ((.cse11 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse8 .cse12))))) (or .cse10 .cse9 (bvsge .cse3 .cse11) (not (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse12 .cse11))) (_ bv0 32))))) (not (bvslt .cse3 (_ bv0 32))))))) is different from false [2022-12-13 22:19:07,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 22:19:35,945 WARN L233 SmtUtils]: Spent 8.46s on a formula simplification. DAG size of input: 33 DAG size of output: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:20:10,882 WARN L233 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 37 DAG size of output: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:20:12,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 22:20:34,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 22:20:35,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 22:20:52,404 WARN L233 SmtUtils]: Spent 11.26s on a formula simplification. DAG size of input: 41 DAG size of output: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:20:54,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 22:21:09,445 WARN L233 SmtUtils]: Spent 8.55s on a formula simplification. DAG size of input: 44 DAG size of output: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:21:10,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:21:10,146 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2022-12-13 22:21:10,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 22:21:10,166 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 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 14 [2022-12-13 22:21:10,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:21:10,167 INFO L225 Difference]: With dead ends: 50 [2022-12-13 22:21:10,167 INFO L226 Difference]: Without dead ends: 40 [2022-12-13 22:21:10,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 353.5s TimeCoverageRelationStatistics Valid=208, Invalid=873, Unknown=45, NotChecked=64, Total=1190 [2022-12-13 22:21:10,168 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 49 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 8 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 64.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:21:10,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 290 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 137 Invalid, 18 Unknown, 1 Unchecked, 64.0s Time] [2022-12-13 22:21:10,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-13 22:21:10,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2022-12-13 22:21:10,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 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) [2022-12-13 22:21:10,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-12-13 22:21:10,174 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 14 [2022-12-13 22:21:10,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:21:10,174 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-12-13 22:21:10,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 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) [2022-12-13 22:21:10,174 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-12-13 22:21:10,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 22:21:10,175 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:21:10,175 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:21:10,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 22:21:10,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 22:21:10,377 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:21:10,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:21:10,377 INFO L85 PathProgramCache]: Analyzing trace with hash 571830174, now seen corresponding path program 2 times [2022-12-13 22:21:10,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:21:10,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913057654] [2022-12-13 22:21:10,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:21:10,378 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 [2022-12-13 22:21:10,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:21:10,379 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 22:21:10,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeeede0f-f506-4e9b-82d9-d3401f463364/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 22:21:33,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:21:33,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:21:33,552 WARN L261 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 22:21:33,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:23:56,195 WARN L233 SmtUtils]: Spent 10.42s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:24:13,258 WARN L837 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main1_~x~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_gcd_test_~b#1_22| (_ BitVec 8))) (let ((.cse0 ((_ sign_extend 24) |ULTIMATE.start_main1_~x~0#1|)) (.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvneg ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~b#1_22|)))))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse0 .cse5))))) (let ((.cse3 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 .cse4))))) (let ((.cse2 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse3))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse3 .cse2))))) (and (not (bvsge .cse0 .cse1)) (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse2 .cse1))) (_ bv0 32)) (not (= .cse2 (_ bv0 32))) (not (bvslt .cse0 (_ bv0 32)))))))))) is different from false [2022-12-13 22:24:15,283 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main1_~x~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_gcd_test_~b#1_22| (_ BitVec 8))) (let ((.cse0 ((_ sign_extend 24) |ULTIMATE.start_main1_~x~0#1|)) (.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvneg ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~b#1_22|)))))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse0 .cse5))))) (let ((.cse3 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 .cse4))))) (let ((.cse2 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse3))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse3 .cse2))))) (and (not (bvsge .cse0 .cse1)) (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse2 .cse1))) (_ bv0 32)) (not (= .cse2 (_ bv0 32))) (not (bvslt .cse0 (_ bv0 32)))))))))) is different from true [2022-12-13 22:24:15,284 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:24:15,284 INFO L328 TraceCheckSpWp]: Computing backward predicates...