./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+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_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_2_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 8402c5691f7146360213fdb1e8b03143db0d7add581e1f213f9dfbebb48edc07 --- 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 20:45:40,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:45:40,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:45:40,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:45:40,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:45:40,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:45:40,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:45:40,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:45:40,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:45:40,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:45:40,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:45:40,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:45:40,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:45:40,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:45:40,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:45:40,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:45:40,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:45:40,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:45:40,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:45:40,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:45:40,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:45:40,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:45:40,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:45:40,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:45:40,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:45:40,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:45:40,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:45:40,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:45:40,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:45:40,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:45:40,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:45:40,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:45:40,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:45:40,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:45:40,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:45:40,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:45:40,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:45:40,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:45:40,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:45:40,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:45:40,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:45:40,621 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:45:40,650 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:45:40,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:45:40,656 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:45:40,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:45:40,656 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:45:40,657 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:45:40,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:45:40,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:45:40,657 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:45:40,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:45:40,658 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:45:40,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:45:40,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:45:40,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:45:40,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:45:40,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:45:40,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:45:40,659 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:45:40,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:45:40,659 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:45:40,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:45:40,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:45:40,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:45:40,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:45:40,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:45:40,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:45:40,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:45:40,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:45:40,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:45:40,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:45:40,661 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:45:40,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:45:40,661 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:45:40,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:45:40,661 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:45:40,661 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_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8402c5691f7146360213fdb1e8b03143db0d7add581e1f213f9dfbebb48edc07 [2022-12-13 20:45:40,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:45:40,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:45:40,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:45:40,866 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:45:40,867 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:45:40,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/gcd_4+newton_2_5.i [2022-12-13 20:45:43,558 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:45:43,676 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:45:43,677 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/sv-benchmarks/c/combinations/gcd_4+newton_2_5.i [2022-12-13 20:45:43,682 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/data/ccf0e26a0/fd9c25e273cc4068a0dc6dcdb6ae0eae/FLAG852ca9ca1 [2022-12-13 20:45:43,692 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/data/ccf0e26a0/fd9c25e273cc4068a0dc6dcdb6ae0eae [2022-12-13 20:45:43,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:45:43,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:45:43,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:45:43,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:45:43,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:45:43,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:45:43" (1/1) ... [2022-12-13 20:45:43,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@214abb75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:43, skipping insertion in model container [2022-12-13 20:45:43,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:45:43" (1/1) ... [2022-12-13 20:45:43,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:45:43,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:45:43,840 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_3eeb947f-7f8d-4908-9579-52423f5dbcfc/sv-benchmarks/c/combinations/gcd_4+newton_2_5.i[1224,1237] [2022-12-13 20:45:43,863 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_3eeb947f-7f8d-4908-9579-52423f5dbcfc/sv-benchmarks/c/combinations/gcd_4+newton_2_5.i[2827,2840] [2022-12-13 20:45:43,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:45:43,874 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:45:43,886 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_3eeb947f-7f8d-4908-9579-52423f5dbcfc/sv-benchmarks/c/combinations/gcd_4+newton_2_5.i[1224,1237] [2022-12-13 20:45:43,895 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_3eeb947f-7f8d-4908-9579-52423f5dbcfc/sv-benchmarks/c/combinations/gcd_4+newton_2_5.i[2827,2840] [2022-12-13 20:45:43,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:45:43,909 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:45:43,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:43 WrapperNode [2022-12-13 20:45:43,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:45:43,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:45:43,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:45:43,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:45:43,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:43" (1/1) ... [2022-12-13 20:45:43,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:43" (1/1) ... [2022-12-13 20:45:43,946 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 80 [2022-12-13 20:45:43,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:45:43,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:45:43,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:45:43,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:45:43,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:43" (1/1) ... [2022-12-13 20:45:43,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:43" (1/1) ... [2022-12-13 20:45:43,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:43" (1/1) ... [2022-12-13 20:45:43,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:43" (1/1) ... [2022-12-13 20:45:43,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:43" (1/1) ... [2022-12-13 20:45:43,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:43" (1/1) ... [2022-12-13 20:45:43,968 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:43" (1/1) ... [2022-12-13 20:45:43,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:43" (1/1) ... [2022-12-13 20:45:43,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:45:43,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:45:43,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:45:43,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:45:43,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:43" (1/1) ... [2022-12-13 20:45:43,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:45:43,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:45:44,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:45:44,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:45:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:45:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-12-13 20:45:44,037 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-12-13 20:45:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-12-13 20:45:44,037 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-12-13 20:45:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:45:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:45:44,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:45:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 20:45:44,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 20:45:44,093 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:45:44,095 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:45:44,228 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:45:44,233 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:45:44,233 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 20:45:44,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:45:44 BoogieIcfgContainer [2022-12-13 20:45:44,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:45:44,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:45:44,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:45:44,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:45:44,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:45:43" (1/3) ... [2022-12-13 20:45:44,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a44ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:45:44, skipping insertion in model container [2022-12-13 20:45:44,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:43" (2/3) ... [2022-12-13 20:45:44,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a44ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:45:44, skipping insertion in model container [2022-12-13 20:45:44,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:45:44" (3/3) ... [2022-12-13 20:45:44,241 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_2_5.i [2022-12-13 20:45:44,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:45:44,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 20:45:44,292 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:45:44,297 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;@379aa66c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:45:44,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 20:45:44,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 20:45:44,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 20:45:44,305 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:45:44,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:44,306 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:45:44,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:44,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1780479560, now seen corresponding path program 1 times [2022-12-13 20:45:44,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:44,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119927168] [2022-12-13 20:45:44,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:44,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:44,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:44,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119927168] [2022-12-13 20:45:44,416 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:45:44,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783416545] [2022-12-13 20:45:44,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:44,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:45:44,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:45:44,418 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:45:44,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:45:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:44,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:45:44,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:45:44,544 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 20:45:44,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:45:44,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783416545] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:44,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:45:44,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:45:44,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899772491] [2022-12-13 20:45:44,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:44,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:45:44,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:44,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:45:44,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:45:44,580 INFO L87 Difference]: Start difference. First operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:44,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:45:44,618 INFO L93 Difference]: Finished difference Result 91 states and 124 transitions. [2022-12-13 20:45:44,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:45:44,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-13 20:45:44,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:45:44,628 INFO L225 Difference]: With dead ends: 91 [2022-12-13 20:45:44,628 INFO L226 Difference]: Without dead ends: 42 [2022-12-13 20:45:44,631 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 20:45:44,635 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 11 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:45:44,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 92 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:45:44,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-12-13 20:45:44,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2022-12-13 20:45:44,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 20:45:44,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-12-13 20:45:44,673 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 11 [2022-12-13 20:45:44,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:45:44,674 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-12-13 20:45:44,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:44,674 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-12-13 20:45:44,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 20:45:44,676 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:45:44,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:44,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:45:44,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 20:45:44,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:45:44,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:44,882 INFO L85 PathProgramCache]: Analyzing trace with hash -5472198, now seen corresponding path program 1 times [2022-12-13 20:45:44,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:44,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076517867] [2022-12-13 20:45:44,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:44,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:44,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:44,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076517867] [2022-12-13 20:45:44,995 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:45:44,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828148551] [2022-12-13 20:45:44,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:44,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:45:44,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:45:44,998 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:45:45,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:45:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:45,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:45:45,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:45:45,122 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 20:45:45,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:45:45,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828148551] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:45,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:45:45,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:45:45,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413678413] [2022-12-13 20:45:45,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:45,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:45:45,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:45,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:45:45,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:45:45,127 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:45:45,152 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2022-12-13 20:45:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:45:45,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-13 20:45:45,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:45:45,153 INFO L225 Difference]: With dead ends: 64 [2022-12-13 20:45:45,154 INFO L226 Difference]: Without dead ends: 47 [2022-12-13 20:45:45,154 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 20:45:45,155 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:45:45,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 72 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:45:45,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-13 20:45:45,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2022-12-13 20:45:45,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 28 states have internal predecessors, (31), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 20:45:45,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2022-12-13 20:45:45,172 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 11 [2022-12-13 20:45:45,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:45:45,172 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2022-12-13 20:45:45,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:45,173 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2022-12-13 20:45:45,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 20:45:45,174 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:45:45,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:45,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:45:45,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-13 20:45:45,376 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:45:45,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:45,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1715037691, now seen corresponding path program 1 times [2022-12-13 20:45:45,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:45,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926470872] [2022-12-13 20:45:45,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:45,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:45,443 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:45:45,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868711866] [2022-12-13 20:45:45,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:45,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:45:45,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:45:45,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:45:45,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:45:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:45,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 20:45:45,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:45:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:45:45,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:45:45,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:45,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926470872] [2022-12-13 20:45:45,586 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:45:45,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868711866] [2022-12-13 20:45:45,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868711866] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:45,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:45:45,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:45:45,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218229340] [2022-12-13 20:45:45,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:45,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:45:45,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:45,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:45:45,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:45:45,588 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:45,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:45:45,604 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2022-12-13 20:45:45,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:45:45,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-13 20:45:45,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:45:45,605 INFO L225 Difference]: With dead ends: 53 [2022-12-13 20:45:45,605 INFO L226 Difference]: Without dead ends: 40 [2022-12-13 20:45:45,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:45:45,607 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:45:45,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:45:45,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-13 20:45:45,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-12-13 20:45:45,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 20:45:45,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2022-12-13 20:45:45,612 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 15 [2022-12-13 20:45:45,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:45:45,613 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2022-12-13 20:45:45,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:45,613 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2022-12-13 20:45:45,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 20:45:45,614 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:45:45,614 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:45,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 20:45:45,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:45:45,817 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:45:45,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:45,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1030095042, now seen corresponding path program 1 times [2022-12-13 20:45:45,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:45,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320790740] [2022-12-13 20:45:45,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:45,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:45,861 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:45:45,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703258774] [2022-12-13 20:45:45,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:45,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:45:45,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:45:45,868 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:45:45,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:45:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:45,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 20:45:45,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:45:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:45:46,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:45:46,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:45:46,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:46,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320790740] [2022-12-13 20:45:46,089 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:45:46,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703258774] [2022-12-13 20:45:46,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703258774] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:45:46,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:45:46,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 20:45:46,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726159017] [2022-12-13 20:45:46,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:45:46,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:45:46,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:46,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:45:46,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:45:46,092 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:46,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:45:46,125 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2022-12-13 20:45:46,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:45:46,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-13 20:45:46,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:45:46,126 INFO L225 Difference]: With dead ends: 57 [2022-12-13 20:45:46,126 INFO L226 Difference]: Without dead ends: 44 [2022-12-13 20:45:46,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:45:46,128 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:45:46,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 100 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:45:46,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-13 20:45:46,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-12-13 20:45:46,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.15625) internal successors, (37), 34 states have internal predecessors, (37), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 20:45:46,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2022-12-13 20:45:46,137 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 17 [2022-12-13 20:45:46,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:45:46,137 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2022-12-13 20:45:46,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:46,138 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2022-12-13 20:45:46,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-13 20:45:46,139 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:45:46,139 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:46,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 20:45:46,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:45:46,341 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:45:46,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:46,343 INFO L85 PathProgramCache]: Analyzing trace with hash -626365316, now seen corresponding path program 2 times [2022-12-13 20:45:46,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:46,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311857209] [2022-12-13 20:45:46,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:46,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:46,389 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:45:46,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057419497] [2022-12-13 20:45:46,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:45:46,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:45:46,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:45:46,394 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:45:46,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 20:45:46,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:45:46,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:45:46,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 20:45:46,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:45:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:45:46,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:45:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:45:46,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:46,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311857209] [2022-12-13 20:45:46,651 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:45:46,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057419497] [2022-12-13 20:45:46,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057419497] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:45:46,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:45:46,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-12-13 20:45:46,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287198817] [2022-12-13 20:45:46,652 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:45:46,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 20:45:46,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:46,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 20:45:46,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-13 20:45:46,653 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:46,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:45:46,731 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2022-12-13 20:45:46,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 20:45:46,732 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-12-13 20:45:46,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:45:46,732 INFO L225 Difference]: With dead ends: 65 [2022-12-13 20:45:46,732 INFO L226 Difference]: Without dead ends: 50 [2022-12-13 20:45:46,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-12-13 20:45:46,733 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:45:46,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 196 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:45:46,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-13 20:45:46,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-12-13 20:45:46,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 40 states have internal predecessors, (44), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 20:45:46,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2022-12-13 20:45:46,738 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 21 [2022-12-13 20:45:46,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:45:46,738 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2022-12-13 20:45:46,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:46,738 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2022-12-13 20:45:46,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 20:45:46,739 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:45:46,739 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:46,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 20:45:46,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:45:46,940 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:45:46,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:46,942 INFO L85 PathProgramCache]: Analyzing trace with hash 2101905688, now seen corresponding path program 1 times [2022-12-13 20:45:46,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:46,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645926666] [2022-12-13 20:45:46,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:46,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:45:46,984 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:45:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:45:47,053 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:45:47,054 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:45:47,056 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-13 20:45:47,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-13 20:45:47,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:45:47,065 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-12-13 20:45:47,069 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:45:47,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:45:47 BoogieIcfgContainer [2022-12-13 20:45:47,089 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:45:47,090 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:45:47,090 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:45:47,090 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:45:47,090 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:45:44" (3/4) ... [2022-12-13 20:45:47,093 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 20:45:47,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:45:47,093 INFO L158 Benchmark]: Toolchain (without parser) took 3397.94ms. Allocated memory was 151.0MB in the beginning and 205.5MB in the end (delta: 54.5MB). Free memory was 108.4MB in the beginning and 111.0MB in the end (delta: -2.6MB). Peak memory consumption was 55.1MB. Max. memory is 16.1GB. [2022-12-13 20:45:47,093 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 151.0MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:45:47,094 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.02ms. Allocated memory is still 151.0MB. Free memory was 107.8MB in the beginning and 96.7MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 20:45:47,094 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.31ms. Allocated memory is still 151.0MB. Free memory was 96.7MB in the beginning and 95.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:45:47,094 INFO L158 Benchmark]: Boogie Preprocessor took 25.45ms. Allocated memory is still 151.0MB. Free memory was 95.2MB in the beginning and 93.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:45:47,095 INFO L158 Benchmark]: RCFGBuilder took 261.73ms. Allocated memory is still 151.0MB. Free memory was 93.7MB in the beginning and 81.5MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 20:45:47,095 INFO L158 Benchmark]: TraceAbstraction took 2852.70ms. Allocated memory was 151.0MB in the beginning and 205.5MB in the end (delta: 54.5MB). Free memory was 80.6MB in the beginning and 111.0MB in the end (delta: -30.4MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. [2022-12-13 20:45:47,096 INFO L158 Benchmark]: Witness Printer took 3.07ms. Allocated memory is still 205.5MB. Free memory is still 111.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:45:47,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 151.0MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.02ms. Allocated memory is still 151.0MB. Free memory was 107.8MB in the beginning and 96.7MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.31ms. Allocated memory is still 151.0MB. Free memory was 96.7MB in the beginning and 95.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.45ms. Allocated memory is still 151.0MB. Free memory was 95.2MB in the beginning and 93.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 261.73ms. Allocated memory is still 151.0MB. Free memory was 93.7MB in the beginning and 81.5MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2852.70ms. Allocated memory was 151.0MB in the beginning and 205.5MB in the end (delta: 54.5MB). Free memory was 80.6MB in the beginning and 111.0MB in the end (delta: -30.4MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. * Witness Printer took 3.07ms. Allocated memory is still 205.5MB. Free memory is still 111.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 109]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 102. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L100] CALL, EXPR f(IN) VAL [\old(x)=113] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=113, x=113] [L100] RET, EXPR f(IN) VAL [f(IN)=110, IN=113] [L100] CALL, EXPR fp(IN) VAL [\old(x)=113] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=113, x=113] [L100] RET, EXPR fp(IN) VAL [f(IN)=110, fp(IN)=109, IN=113] [L100] float x = IN - f(IN)/fp(IN); [L102] CALL, EXPR f(x) VAL [\old(x)=111] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=111, x=111] [L102] RET, EXPR f(x) VAL [f(x)=114, IN=113, x=111] [L102] CALL, EXPR fp(x) VAL [\old(x)=111] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=111, x=111] [L102] RET, EXPR fp(x) VAL [f(x)=114, fp(x)=112, IN=113, x=111] [L102] x = x - f(x)/fp(x) [L108] COND TRUE !(x < 0.1) VAL [IN=113] [L109] reach_error() VAL [IN=113] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 528 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 332 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 123 IncrementalHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 196 mSDtfsCounter, 123 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=5, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 343 SizeOfPredicates, 17 NumberOfNonLiveVariables, 412 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 17/41 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 20:45:47,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_2_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 8402c5691f7146360213fdb1e8b03143db0d7add581e1f213f9dfbebb48edc07 --- 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 20:45:48,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:45:48,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:45:48,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:45:48,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:45:48,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:45:48,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:45:48,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:45:48,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:45:48,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:45:48,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:45:48,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:45:48,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:45:48,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:45:48,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:45:48,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:45:48,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:45:48,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:45:48,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:45:48,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:45:48,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:45:48,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:45:48,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:45:48,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:45:48,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:45:48,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:45:48,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:45:48,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:45:48,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:45:48,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:45:48,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:45:48,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:45:48,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:45:48,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:45:48,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:45:48,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:45:48,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:45:48,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:45:48,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:45:48,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:45:48,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:45:48,850 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-12-13 20:45:48,866 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:45:48,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:45:48,866 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:45:48,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:45:48,867 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:45:48,867 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:45:48,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:45:48,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:45:48,868 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:45:48,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:45:48,868 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:45:48,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:45:48,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:45:48,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:45:48,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:45:48,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:45:48,869 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 20:45:48,869 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 20:45:48,869 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 20:45:48,869 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:45:48,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:45:48,869 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:45:48,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:45:48,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:45:48,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:45:48,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:45:48,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:45:48,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:45:48,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:45:48,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:45:48,870 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 20:45:48,871 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 20:45:48,871 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:45:48,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:45:48,871 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:45:48,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:45:48,871 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 20:45:48,871 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:45:48,871 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_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8402c5691f7146360213fdb1e8b03143db0d7add581e1f213f9dfbebb48edc07 [2022-12-13 20:45:49,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:45:49,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:45:49,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:45:49,136 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:45:49,137 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:45:49,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/gcd_4+newton_2_5.i [2022-12-13 20:45:51,753 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:45:51,909 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:45:51,910 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/sv-benchmarks/c/combinations/gcd_4+newton_2_5.i [2022-12-13 20:45:51,917 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/data/77a4aeb70/22d5bd9cb0b2478f868a59e46b3c0fe3/FLAG81098ccce [2022-12-13 20:45:51,929 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/data/77a4aeb70/22d5bd9cb0b2478f868a59e46b3c0fe3 [2022-12-13 20:45:51,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:45:51,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:45:51,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:45:51,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:45:51,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:45:51,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:45:51" (1/1) ... [2022-12-13 20:45:51,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62731e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:51, skipping insertion in model container [2022-12-13 20:45:51,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:45:51" (1/1) ... [2022-12-13 20:45:51,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:45:51,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:45:52,078 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_3eeb947f-7f8d-4908-9579-52423f5dbcfc/sv-benchmarks/c/combinations/gcd_4+newton_2_5.i[1224,1237] [2022-12-13 20:45:52,095 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_3eeb947f-7f8d-4908-9579-52423f5dbcfc/sv-benchmarks/c/combinations/gcd_4+newton_2_5.i[2827,2840] [2022-12-13 20:45:52,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:45:52,109 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:45:52,123 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_3eeb947f-7f8d-4908-9579-52423f5dbcfc/sv-benchmarks/c/combinations/gcd_4+newton_2_5.i[1224,1237] [2022-12-13 20:45:52,135 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_3eeb947f-7f8d-4908-9579-52423f5dbcfc/sv-benchmarks/c/combinations/gcd_4+newton_2_5.i[2827,2840] [2022-12-13 20:45:52,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:45:52,151 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:45:52,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:52 WrapperNode [2022-12-13 20:45:52,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:45:52,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:45:52,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:45:52,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:45:52,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:52" (1/1) ... [2022-12-13 20:45:52,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:52" (1/1) ... [2022-12-13 20:45:52,190 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 77 [2022-12-13 20:45:52,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:45:52,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:45:52,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:45:52,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:45:52,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:52" (1/1) ... [2022-12-13 20:45:52,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:52" (1/1) ... [2022-12-13 20:45:52,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:52" (1/1) ... [2022-12-13 20:45:52,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:52" (1/1) ... [2022-12-13 20:45:52,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:52" (1/1) ... [2022-12-13 20:45:52,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:52" (1/1) ... [2022-12-13 20:45:52,216 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:52" (1/1) ... [2022-12-13 20:45:52,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:52" (1/1) ... [2022-12-13 20:45:52,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:45:52,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:45:52,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:45:52,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:45:52,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:52" (1/1) ... [2022-12-13 20:45:52,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:45:52,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:45:52,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:45:52,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:45:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:45:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 20:45:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-12-13 20:45:52,283 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-12-13 20:45:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-12-13 20:45:52,284 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-12-13 20:45:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:45:52,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:45:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 20:45:52,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 20:45:52,357 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:45:52,359 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:45:58,919 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:45:58,927 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:45:58,927 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 20:45:58,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:45:58 BoogieIcfgContainer [2022-12-13 20:45:58,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:45:58,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:45:58,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:45:58,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:45:58,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:45:51" (1/3) ... [2022-12-13 20:45:58,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d21266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:45:58, skipping insertion in model container [2022-12-13 20:45:58,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:45:52" (2/3) ... [2022-12-13 20:45:58,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d21266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:45:58, skipping insertion in model container [2022-12-13 20:45:58,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:45:58" (3/3) ... [2022-12-13 20:45:58,938 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_2_5.i [2022-12-13 20:45:58,958 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:45:58,958 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 20:45:59,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:45:59,010 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;@5e5e2da9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:45:59,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 20:45:59,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 20:45:59,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 20:45:59,020 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:45:59,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:59,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:45:59,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:59,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1780479560, now seen corresponding path program 1 times [2022-12-13 20:45:59,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:45:59,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162533561] [2022-12-13 20:45:59,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:59,034 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 20:45:59,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:45:59,064 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 20:45:59,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 20:45:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:59,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:45:59,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:45:59,238 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 20:45:59,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:45:59,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:45:59,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162533561] [2022-12-13 20:45:59,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162533561] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:59,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:45:59,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:45:59,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166571465] [2022-12-13 20:45:59,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:59,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:45:59,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:45:59,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:45:59,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:45:59,278 INFO L87 Difference]: Start difference. First operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:59,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:45:59,360 INFO L93 Difference]: Finished difference Result 93 states and 127 transitions. [2022-12-13 20:45:59,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:45:59,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-13 20:45:59,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:45:59,369 INFO L225 Difference]: With dead ends: 93 [2022-12-13 20:45:59,369 INFO L226 Difference]: Without dead ends: 43 [2022-12-13 20:45:59,372 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 20:45:59,375 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 13 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:45:59,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 92 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:45:59,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-12-13 20:45:59,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2022-12-13 20:45:59,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 20:45:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-12-13 20:45:59,411 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 11 [2022-12-13 20:45:59,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:45:59,411 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-12-13 20:45:59,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:59,412 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-12-13 20:45:59,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 20:45:59,413 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:45:59,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:59,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 20:45:59,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 20:45:59,615 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:45:59,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:59,618 INFO L85 PathProgramCache]: Analyzing trace with hash 413626440, now seen corresponding path program 1 times [2022-12-13 20:45:59,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:45:59,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736395968] [2022-12-13 20:45:59,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:59,621 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 20:45:59,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:45:59,625 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 20:45:59,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 20:45:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:59,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:45:59,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:45:59,805 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 20:45:59,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:45:59,806 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:45:59,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736395968] [2022-12-13 20:45:59,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736395968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:59,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:45:59,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:45:59,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344651730] [2022-12-13 20:45:59,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:59,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:45:59,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:45:59,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:45:59,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:45:59,810 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:59,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:45:59,873 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2022-12-13 20:45:59,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:45:59,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-13 20:45:59,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:45:59,875 INFO L225 Difference]: With dead ends: 52 [2022-12-13 20:45:59,875 INFO L226 Difference]: Without dead ends: 38 [2022-12-13 20:45:59,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:45:59,877 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:45:59,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 70 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:45:59,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-13 20:45:59,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-12-13 20:45:59,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 28 states have internal predecessors, (31), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 20:45:59,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2022-12-13 20:45:59,886 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 13 [2022-12-13 20:45:59,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:45:59,887 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2022-12-13 20:45:59,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:59,887 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2022-12-13 20:45:59,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 20:45:59,888 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:45:59,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:59,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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)] Forceful destruction successful, exit code 0 [2022-12-13 20:46:00,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 20:46:00,090 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:46:00,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:46:00,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1715037691, now seen corresponding path program 1 times [2022-12-13 20:46:00,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:46:00,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418775234] [2022-12-13 20:46:00,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:46:00,096 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 20:46:00,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:46:00,100 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 20:46:00,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 20:46:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:46:00,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 20:46:00,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:46:00,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:46:00,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:46:00,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:46:00,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418775234] [2022-12-13 20:46:00,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418775234] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:46:00,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:46:00,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:46:00,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137654247] [2022-12-13 20:46:00,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:46:00,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:46:00,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:46:00,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:46:00,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:46:00,400 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:46:00,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:46:00,459 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2022-12-13 20:46:00,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:46:00,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-13 20:46:00,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:46:00,461 INFO L225 Difference]: With dead ends: 53 [2022-12-13 20:46:00,461 INFO L226 Difference]: Without dead ends: 40 [2022-12-13 20:46:00,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:46:00,463 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:46:00,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:46:00,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-13 20:46:00,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-12-13 20:46:00,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 20:46:00,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2022-12-13 20:46:00,472 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 15 [2022-12-13 20:46:00,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:46:00,472 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2022-12-13 20:46:00,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:46:00,473 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2022-12-13 20:46:00,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 20:46:00,474 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:46:00,474 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:46:00,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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)] Forceful destruction successful, exit code 0 [2022-12-13 20:46:00,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 20:46:00,676 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:46:00,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:46:00,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1030095042, now seen corresponding path program 1 times [2022-12-13 20:46:00,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:46:00,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573409083] [2022-12-13 20:46:00,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:46:00,680 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 20:46:00,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:46:00,683 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 20:46:00,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 20:46:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:46:00,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 20:46:00,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:46:01,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:46:01,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:46:01,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:46:01,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:46:01,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573409083] [2022-12-13 20:46:01,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573409083] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:46:01,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:46:01,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 20:46:01,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883562133] [2022-12-13 20:46:01,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:46:01,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:46:01,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:46:01,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:46:01,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:46:01,256 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:46:01,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:46:01,443 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2022-12-13 20:46:01,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:46:01,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-13 20:46:01,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:46:01,445 INFO L225 Difference]: With dead ends: 57 [2022-12-13 20:46:01,445 INFO L226 Difference]: Without dead ends: 44 [2022-12-13 20:46:01,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:46:01,446 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:46:01,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:46:01,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-13 20:46:01,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-12-13 20:46:01,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.15625) internal successors, (37), 34 states have internal predecessors, (37), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 20:46:01,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2022-12-13 20:46:01,452 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 17 [2022-12-13 20:46:01,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:46:01,452 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2022-12-13 20:46:01,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:46:01,453 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2022-12-13 20:46:01,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-13 20:46:01,453 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:46:01,454 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:46:01,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 20:46:01,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 20:46:01,656 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:46:01,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:46:01,657 INFO L85 PathProgramCache]: Analyzing trace with hash -626365316, now seen corresponding path program 2 times [2022-12-13 20:46:01,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:46:01,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950245960] [2022-12-13 20:46:01,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:46:01,659 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 20:46:01,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:46:01,663 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 20:46:01,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 20:46:01,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:46:01,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:46:01,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 20:46:01,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:46:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:46:02,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:46:09,203 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:46:09,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:46:09,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950245960] [2022-12-13 20:46:09,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950245960] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:46:09,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:46:09,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-12-13 20:46:09,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024868725] [2022-12-13 20:46:09,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:46:09,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 20:46:09,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:46:09,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 20:46:09,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-12-13 20:46:09,205 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:46:29,392 WARN L233 SmtUtils]: Spent 7.54s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 20:46:45,370 WARN L233 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 20:46:58,160 WARN L233 SmtUtils]: Spent 8.29s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 20:47:02,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:47:02,752 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2022-12-13 20:47:02,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 20:47:02,786 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-12-13 20:47:02,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:47:02,787 INFO L225 Difference]: With dead ends: 68 [2022-12-13 20:47:02,787 INFO L226 Difference]: Without dead ends: 65 [2022-12-13 20:47:02,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 51.4s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2022-12-13 20:47:02,788 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 30 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:47:02,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 345 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-12-13 20:47:02,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-12-13 20:47:02,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2022-12-13 20:47:02,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 51 states have internal predecessors, (58), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 20:47:02,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2022-12-13 20:47:02,802 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 21 [2022-12-13 20:47:02,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:47:02,803 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2022-12-13 20:47:02,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:47:02,803 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2022-12-13 20:47:02,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 20:47:02,804 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:47:02,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:47:02,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 20:47:03,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 20:47:03,006 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:47:03,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:47:03,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2101905688, now seen corresponding path program 1 times [2022-12-13 20:47:03,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:47:03,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131741039] [2022-12-13 20:47:03,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:47:03,013 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 20:47:03,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:47:03,017 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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 20:47:03,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eeb947f-7f8d-4908-9579-52423f5dbcfc/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