./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/byte_add_2-2.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_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba --- 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 20:42:17,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:42:17,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:42:17,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:42:17,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:42:17,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:42:17,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:42:17,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:42:17,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:42:17,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:42:17,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:42:17,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:42:17,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:42:17,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:42:17,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:42:17,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:42:17,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:42:17,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:42:17,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:42:17,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:42:17,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:42:17,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:42:17,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:42:17,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:42:17,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:42:17,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:42:17,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:42:17,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:42:17,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:42:17,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:42:17,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:42:17,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:42:17,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:42:17,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:42:17,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:42:17,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:42:17,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:42:17,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:42:17,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:42:17,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:42:17,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:42:17,640 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:42:17,656 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:42:17,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:42:17,656 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:42:17,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:42:17,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:42:17,657 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:42:17,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:42:17,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:42:17,658 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:42:17,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:42:17,658 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:42:17,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:42:17,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:42:17,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:42:17,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:42:17,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:42:17,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:42:17,659 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:42:17,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:42:17,659 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:42:17,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:42:17,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:42:17,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:42:17,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:42:17,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:42:17,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:42:17,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:42:17,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:42:17,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:42:17,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:42:17,660 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:42:17,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:42:17,661 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:42:17,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:42:17,661 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:42:17,661 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_3f696bc3-34e5-47d6-b84a-3f51c329b426/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba [2022-12-13 20:42:17,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:42:17,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:42:17,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:42:17,859 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:42:17,859 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:42:17,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/bitvector/byte_add_2-2.i [2022-12-13 20:42:20,411 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:42:20,534 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:42:20,534 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/sv-benchmarks/c/bitvector/byte_add_2-2.i [2022-12-13 20:42:20,542 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/data/f3f4ba5cd/d7844a2b23bd469a941635bd427e4699/FLAG599346326 [2022-12-13 20:42:20,554 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/data/f3f4ba5cd/d7844a2b23bd469a941635bd427e4699 [2022-12-13 20:42:20,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:42:20,557 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:42:20,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:42:20,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:42:20,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:42:20,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:42:20" (1/1) ... [2022-12-13 20:42:20,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5baab451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:20, skipping insertion in model container [2022-12-13 20:42:20,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:42:20" (1/1) ... [2022-12-13 20:42:20,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:42:20,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:42:20,702 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_3f696bc3-34e5-47d6-b84a-3f51c329b426/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2022-12-13 20:42:20,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:42:20,733 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:42:20,742 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_3f696bc3-34e5-47d6-b84a-3f51c329b426/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2022-12-13 20:42:20,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:42:20,766 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:42:20,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:20 WrapperNode [2022-12-13 20:42:20,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:42:20,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:42:20,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:42:20,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:42:20,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:20" (1/1) ... [2022-12-13 20:42:20,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:20" (1/1) ... [2022-12-13 20:42:20,800 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 141 [2022-12-13 20:42:20,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:42:20,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:42:20,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:42:20,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:42:20,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:20" (1/1) ... [2022-12-13 20:42:20,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:20" (1/1) ... [2022-12-13 20:42:20,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:20" (1/1) ... [2022-12-13 20:42:20,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:20" (1/1) ... [2022-12-13 20:42:20,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:20" (1/1) ... [2022-12-13 20:42:20,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:20" (1/1) ... [2022-12-13 20:42:20,821 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:20" (1/1) ... [2022-12-13 20:42:20,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:20" (1/1) ... [2022-12-13 20:42:20,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:42:20,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:42:20,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:42:20,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:42:20,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:20" (1/1) ... [2022-12-13 20:42:20,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:42:20,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:42:20,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:42:20,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:42:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:42:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:42:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:42:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:42:20,951 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:42:20,953 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:42:21,243 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:42:21,248 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:42:21,248 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 20:42:21,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:42:21 BoogieIcfgContainer [2022-12-13 20:42:21,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:42:21,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:42:21,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:42:21,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:42:21,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:42:20" (1/3) ... [2022-12-13 20:42:21,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369ecf47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:42:21, skipping insertion in model container [2022-12-13 20:42:21,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:20" (2/3) ... [2022-12-13 20:42:21,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369ecf47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:42:21, skipping insertion in model container [2022-12-13 20:42:21,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:42:21" (3/3) ... [2022-12-13 20:42:21,256 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_2-2.i [2022-12-13 20:42:21,271 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:42:21,272 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 20:42:21,308 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:42:21,313 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;@30ad3808, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:42:21,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 20:42:21,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 46 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:21,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 20:42:21,322 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:21,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:21,322 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:21,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:21,326 INFO L85 PathProgramCache]: Analyzing trace with hash 903950584, now seen corresponding path program 1 times [2022-12-13 20:42:21,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:42:21,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968324538] [2022-12-13 20:42:21,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:21,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:42:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:21,466 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 20:42:21,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:42:21,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968324538] [2022-12-13 20:42:21,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968324538] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:21,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:21,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:42:21,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284706233] [2022-12-13 20:42:21,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:21,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:42:21,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:42:21,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:42:21,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:42:21,509 INFO L87 Difference]: Start difference. First operand has 47 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 46 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:21,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:21,529 INFO L93 Difference]: Finished difference Result 64 states and 105 transitions. [2022-12-13 20:42:21,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:42:21,531 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-13 20:42:21,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:21,541 INFO L225 Difference]: With dead ends: 64 [2022-12-13 20:42:21,541 INFO L226 Difference]: Without dead ends: 43 [2022-12-13 20:42:21,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:42:21,551 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:21,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:42:21,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-12-13 20:42:21,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-12-13 20:42:21,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 42 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:21,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 73 transitions. [2022-12-13 20:42:21,578 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 73 transitions. Word has length 13 [2022-12-13 20:42:21,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:21,578 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 73 transitions. [2022-12-13 20:42:21,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:21,579 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 73 transitions. [2022-12-13 20:42:21,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 20:42:21,580 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:21,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:21,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:42:21,580 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:21,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:21,581 INFO L85 PathProgramCache]: Analyzing trace with hash 430337229, now seen corresponding path program 1 times [2022-12-13 20:42:21,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:42:21,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514303300] [2022-12-13 20:42:21,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:21,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:42:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:21,769 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 20:42:21,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:42:21,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514303300] [2022-12-13 20:42:21,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514303300] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:21,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:21,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:42:21,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675774399] [2022-12-13 20:42:21,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:21,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:42:21,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:42:21,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:42:21,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:42:21,772 INFO L87 Difference]: Start difference. First operand 43 states and 73 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:21,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:21,887 INFO L93 Difference]: Finished difference Result 102 states and 179 transitions. [2022-12-13 20:42:21,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:42:21,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-13 20:42:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:21,889 INFO L225 Difference]: With dead ends: 102 [2022-12-13 20:42:21,889 INFO L226 Difference]: Without dead ends: 69 [2022-12-13 20:42:21,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 20:42:21,891 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 29 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:21,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 77 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:42:21,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-12-13 20:42:21,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2022-12-13 20:42:21,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:21,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 103 transitions. [2022-12-13 20:42:21,900 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 103 transitions. Word has length 13 [2022-12-13 20:42:21,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:21,900 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 103 transitions. [2022-12-13 20:42:21,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:21,901 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 103 transitions. [2022-12-13 20:42:21,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 20:42:21,901 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:21,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:21,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:42:21,902 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:21,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:21,903 INFO L85 PathProgramCache]: Analyzing trace with hash -2037878536, now seen corresponding path program 1 times [2022-12-13 20:42:21,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:42:21,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923566752] [2022-12-13 20:42:21,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:21,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:42:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:22,060 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 20:42:22,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:42:22,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923566752] [2022-12-13 20:42:22,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923566752] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:22,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:22,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:42:22,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368419685] [2022-12-13 20:42:22,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:22,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:42:22,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:42:22,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:42:22,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:42:22,063 INFO L87 Difference]: Start difference. First operand 67 states and 103 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:22,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:22,256 INFO L93 Difference]: Finished difference Result 168 states and 287 transitions. [2022-12-13 20:42:22,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:42:22,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-12-13 20:42:22,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:22,258 INFO L225 Difference]: With dead ends: 168 [2022-12-13 20:42:22,258 INFO L226 Difference]: Without dead ends: 135 [2022-12-13 20:42:22,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:42:22,259 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 112 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:22,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 105 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:42:22,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-12-13 20:42:22,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 93. [2022-12-13 20:42:22,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.5543478260869565) internal successors, (143), 92 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:22,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 143 transitions. [2022-12-13 20:42:22,266 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 143 transitions. Word has length 19 [2022-12-13 20:42:22,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:22,267 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 143 transitions. [2022-12-13 20:42:22,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:22,267 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 143 transitions. [2022-12-13 20:42:22,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 20:42:22,267 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:22,268 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 20:42:22,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:42:22,268 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:22,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:22,268 INFO L85 PathProgramCache]: Analyzing trace with hash -21369817, now seen corresponding path program 1 times [2022-12-13 20:42:22,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:42:22,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19113472] [2022-12-13 20:42:22,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:22,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:42:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:22,385 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 20:42:22,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:42:22,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19113472] [2022-12-13 20:42:22,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19113472] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:22,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:22,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:42:22,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913359354] [2022-12-13 20:42:22,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:22,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:42:22,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:42:22,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:42:22,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:42:22,388 INFO L87 Difference]: Start difference. First operand 93 states and 143 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:22,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:22,536 INFO L93 Difference]: Finished difference Result 272 states and 412 transitions. [2022-12-13 20:42:22,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:42:22,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-13 20:42:22,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:22,539 INFO L225 Difference]: With dead ends: 272 [2022-12-13 20:42:22,539 INFO L226 Difference]: Without dead ends: 192 [2022-12-13 20:42:22,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:42:22,541 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 105 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:22,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 201 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:42:22,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-12-13 20:42:22,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 101. [2022-12-13 20:42:22,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.52) internal successors, (152), 100 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:22,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 152 transitions. [2022-12-13 20:42:22,550 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 152 transitions. Word has length 25 [2022-12-13 20:42:22,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:22,550 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 152 transitions. [2022-12-13 20:42:22,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:22,550 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 152 transitions. [2022-12-13 20:42:22,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 20:42:22,551 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:22,551 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, 1] [2022-12-13 20:42:22,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:42:22,551 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:22,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:22,552 INFO L85 PathProgramCache]: Analyzing trace with hash -53067146, now seen corresponding path program 1 times [2022-12-13 20:42:22,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:42:22,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715942610] [2022-12-13 20:42:22,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:22,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:42:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:22,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 20:42:22,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:42:22,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715942610] [2022-12-13 20:42:22,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715942610] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:22,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:22,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:42:22,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047791006] [2022-12-13 20:42:22,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:22,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:42:22,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:42:22,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:42:22,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:42:22,639 INFO L87 Difference]: Start difference. First operand 101 states and 152 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:22,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:22,645 INFO L93 Difference]: Finished difference Result 179 states and 272 transitions. [2022-12-13 20:42:22,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:42:22,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-12-13 20:42:22,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:22,647 INFO L225 Difference]: With dead ends: 179 [2022-12-13 20:42:22,647 INFO L226 Difference]: Without dead ends: 93 [2022-12-13 20:42:22,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 20:42:22,648 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 64 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:22,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 67 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:42:22,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-12-13 20:42:22,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-12-13 20:42:22,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.5108695652173914) internal successors, (139), 92 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:22,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 139 transitions. [2022-12-13 20:42:22,654 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 139 transitions. Word has length 26 [2022-12-13 20:42:22,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:22,654 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 139 transitions. [2022-12-13 20:42:22,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:22,654 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 139 transitions. [2022-12-13 20:42:22,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 20:42:22,655 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:22,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:22,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:42:22,656 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:22,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:22,656 INFO L85 PathProgramCache]: Analyzing trace with hash -350554629, now seen corresponding path program 1 times [2022-12-13 20:42:22,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:42:22,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478226846] [2022-12-13 20:42:22,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:22,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:42:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:22,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:42:22,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:42:22,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478226846] [2022-12-13 20:42:22,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478226846] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:22,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:22,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:42:22,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014885574] [2022-12-13 20:42:22,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:22,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:42:22,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:42:22,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:42:22,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:42:22,780 INFO L87 Difference]: Start difference. First operand 93 states and 139 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:22,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:22,915 INFO L93 Difference]: Finished difference Result 273 states and 407 transitions. [2022-12-13 20:42:22,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:42:22,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-12-13 20:42:22,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:22,917 INFO L225 Difference]: With dead ends: 273 [2022-12-13 20:42:22,917 INFO L226 Difference]: Without dead ends: 194 [2022-12-13 20:42:22,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:42:22,919 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 102 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:22,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 195 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:42:22,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-12-13 20:42:22,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 98. [2022-12-13 20:42:22,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.4845360824742269) internal successors, (144), 97 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:22,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 144 transitions. [2022-12-13 20:42:22,930 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 144 transitions. Word has length 32 [2022-12-13 20:42:22,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:22,931 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 144 transitions. [2022-12-13 20:42:22,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:22,931 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 144 transitions. [2022-12-13 20:42:22,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-13 20:42:22,932 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:22,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:22,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:42:22,932 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:22,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:22,932 INFO L85 PathProgramCache]: Analyzing trace with hash -143141955, now seen corresponding path program 1 times [2022-12-13 20:42:22,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:42:22,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219715658] [2022-12-13 20:42:22,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:22,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:42:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:23,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:42:23,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:42:23,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219715658] [2022-12-13 20:42:23,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219715658] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:23,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:23,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:42:23,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892343870] [2022-12-13 20:42:23,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:23,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:42:23,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:42:23,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:42:23,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:42:23,029 INFO L87 Difference]: Start difference. First operand 98 states and 144 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:23,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:23,172 INFO L93 Difference]: Finished difference Result 274 states and 429 transitions. [2022-12-13 20:42:23,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:42:23,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-12-13 20:42:23,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:23,173 INFO L225 Difference]: With dead ends: 274 [2022-12-13 20:42:23,173 INFO L226 Difference]: Without dead ends: 196 [2022-12-13 20:42:23,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:42:23,175 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 116 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:23,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 86 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:42:23,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-12-13 20:42:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 137. [2022-12-13 20:42:23,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.536764705882353) internal successors, (209), 136 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:23,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 209 transitions. [2022-12-13 20:42:23,182 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 209 transitions. Word has length 33 [2022-12-13 20:42:23,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:23,182 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 209 transitions. [2022-12-13 20:42:23,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:23,182 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 209 transitions. [2022-12-13 20:42:23,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-13 20:42:23,183 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:23,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:23,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:42:23,183 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:23,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:23,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1481468776, now seen corresponding path program 1 times [2022-12-13 20:42:23,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:42:23,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831520565] [2022-12-13 20:42:23,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:23,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:42:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:23,352 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 20:42:23,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:42:23,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831520565] [2022-12-13 20:42:23,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831520565] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:42:23,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062797050] [2022-12-13 20:42:23,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:23,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:42:23,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:42:23,354 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:42:23,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:42:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:23,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:42:23,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:23,558 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 20:42:23,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:42:23,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062797050] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:23,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:42:23,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-12-13 20:42:23,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577881052] [2022-12-13 20:42:23,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:23,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:42:23,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:42:23,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:42:23,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:42:23,560 INFO L87 Difference]: Start difference. First operand 137 states and 209 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:23,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:23,653 INFO L93 Difference]: Finished difference Result 284 states and 447 transitions. [2022-12-13 20:42:23,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:42:23,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-12-13 20:42:23,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:23,654 INFO L225 Difference]: With dead ends: 284 [2022-12-13 20:42:23,654 INFO L226 Difference]: Without dead ends: 160 [2022-12-13 20:42:23,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:42:23,656 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 74 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:23,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 82 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:42:23,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-12-13 20:42:23,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 137. [2022-12-13 20:42:23,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.5147058823529411) internal successors, (206), 136 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:23,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 206 transitions. [2022-12-13 20:42:23,665 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 206 transitions. Word has length 39 [2022-12-13 20:42:23,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:23,665 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 206 transitions. [2022-12-13 20:42:23,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:23,665 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 206 transitions. [2022-12-13 20:42:23,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-13 20:42:23,666 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:23,666 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:23,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:42:23,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 20:42:23,868 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:23,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:23,870 INFO L85 PathProgramCache]: Analyzing trace with hash -115920210, now seen corresponding path program 1 times [2022-12-13 20:42:23,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:42:23,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127727738] [2022-12-13 20:42:23,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:23,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:42:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 20:42:24,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:42:24,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127727738] [2022-12-13 20:42:24,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127727738] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:24,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:24,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:42:24,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47462969] [2022-12-13 20:42:24,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:24,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:42:24,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:42:24,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:42:24,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:42:24,120 INFO L87 Difference]: Start difference. First operand 137 states and 206 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:24,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:24,248 INFO L93 Difference]: Finished difference Result 380 states and 580 transitions. [2022-12-13 20:42:24,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:42:24,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-12-13 20:42:24,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:24,250 INFO L225 Difference]: With dead ends: 380 [2022-12-13 20:42:24,250 INFO L226 Difference]: Without dead ends: 258 [2022-12-13 20:42:24,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:42:24,251 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 99 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:24,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 82 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:42:24,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-12-13 20:42:24,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 179. [2022-12-13 20:42:24,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.5561797752808988) internal successors, (277), 178 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:24,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 277 transitions. [2022-12-13 20:42:24,262 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 277 transitions. Word has length 53 [2022-12-13 20:42:24,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:24,262 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 277 transitions. [2022-12-13 20:42:24,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:24,263 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 277 transitions. [2022-12-13 20:42:24,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 20:42:24,264 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:24,264 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:24,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 20:42:24,265 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:24,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:24,265 INFO L85 PathProgramCache]: Analyzing trace with hash 380800779, now seen corresponding path program 1 times [2022-12-13 20:42:24,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:42:24,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883902422] [2022-12-13 20:42:24,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:24,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:42:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:24,471 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-13 20:42:24,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:42:24,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883902422] [2022-12-13 20:42:24,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883902422] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:24,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:24,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:42:24,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355347275] [2022-12-13 20:42:24,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:24,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:42:24,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:42:24,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:42:24,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:42:24,473 INFO L87 Difference]: Start difference. First operand 179 states and 277 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:24,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:24,692 INFO L93 Difference]: Finished difference Result 709 states and 1096 transitions. [2022-12-13 20:42:24,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:42:24,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-12-13 20:42:24,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:24,694 INFO L225 Difference]: With dead ends: 709 [2022-12-13 20:42:24,694 INFO L226 Difference]: Without dead ends: 546 [2022-12-13 20:42:24,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:42:24,696 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 187 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:24,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 312 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:42:24,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-12-13 20:42:24,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 179. [2022-12-13 20:42:24,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.5561797752808988) internal successors, (277), 178 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:24,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 277 transitions. [2022-12-13 20:42:24,709 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 277 transitions. Word has length 66 [2022-12-13 20:42:24,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:24,709 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 277 transitions. [2022-12-13 20:42:24,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:24,709 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 277 transitions. [2022-12-13 20:42:24,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 20:42:24,711 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:24,711 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:24,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 20:42:24,711 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:24,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:24,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1313996354, now seen corresponding path program 1 times [2022-12-13 20:42:24,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:42:24,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737559603] [2022-12-13 20:42:24,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:24,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:42:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:24,950 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-13 20:42:24,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:42:24,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737559603] [2022-12-13 20:42:24,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737559603] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:24,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:24,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:42:24,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135649069] [2022-12-13 20:42:24,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:24,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:42:24,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:42:24,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:42:24,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:42:24,952 INFO L87 Difference]: Start difference. First operand 179 states and 277 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:25,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:25,384 INFO L93 Difference]: Finished difference Result 912 states and 1399 transitions. [2022-12-13 20:42:25,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 20:42:25,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-12-13 20:42:25,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:25,386 INFO L225 Difference]: With dead ends: 912 [2022-12-13 20:42:25,386 INFO L226 Difference]: Without dead ends: 749 [2022-12-13 20:42:25,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:42:25,387 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 377 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:25,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 602 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:42:25,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-12-13 20:42:25,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 174. [2022-12-13 20:42:25,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.5664739884393064) internal successors, (271), 173 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 271 transitions. [2022-12-13 20:42:25,396 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 271 transitions. Word has length 67 [2022-12-13 20:42:25,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:25,397 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 271 transitions. [2022-12-13 20:42:25,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:25,397 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 271 transitions. [2022-12-13 20:42:25,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 20:42:25,397 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:25,398 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:25,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 20:42:25,398 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:25,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:25,398 INFO L85 PathProgramCache]: Analyzing trace with hash -725391719, now seen corresponding path program 1 times [2022-12-13 20:42:25,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:42:25,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958095551] [2022-12-13 20:42:25,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:25,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:42:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:25,520 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 20:42:25,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:42:25,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958095551] [2022-12-13 20:42:25,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958095551] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:42:25,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722620733] [2022-12-13 20:42:25,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:25,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:42:25,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:42:25,522 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:42:25,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:42:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:25,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 20:42:25,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 20:42:25,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:42:25,726 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 38 proven. 25 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 20:42:25,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722620733] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:42:25,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:42:25,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 6] total 11 [2022-12-13 20:42:25,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382869480] [2022-12-13 20:42:25,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:42:25,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 20:42:25,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:42:25,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 20:42:25,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:42:25,728 INFO L87 Difference]: Start difference. First operand 174 states and 271 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:26,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:26,394 INFO L93 Difference]: Finished difference Result 950 states and 1502 transitions. [2022-12-13 20:42:26,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 20:42:26,395 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-13 20:42:26,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:26,397 INFO L225 Difference]: With dead ends: 950 [2022-12-13 20:42:26,397 INFO L226 Difference]: Without dead ends: 711 [2022-12-13 20:42:26,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2022-12-13 20:42:26,399 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 504 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:26,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 341 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 20:42:26,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2022-12-13 20:42:26,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 493. [2022-12-13 20:42:26,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 1.4634146341463414) internal successors, (720), 492 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:26,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 720 transitions. [2022-12-13 20:42:26,431 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 720 transitions. Word has length 69 [2022-12-13 20:42:26,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:26,431 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 720 transitions. [2022-12-13 20:42:26,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:26,432 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 720 transitions. [2022-12-13 20:42:26,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-13 20:42:26,433 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:26,433 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:26,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:42:26,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:42:26,634 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:26,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:26,634 INFO L85 PathProgramCache]: Analyzing trace with hash 319706574, now seen corresponding path program 1 times [2022-12-13 20:42:26,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:42:26,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353984737] [2022-12-13 20:42:26,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:26,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:42:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:42:26,718 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:42:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:42:26,788 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:42:26,789 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:42:26,790 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 20:42:26,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 20:42:26,795 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:26,798 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:42:26,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:42:26 BoogieIcfgContainer [2022-12-13 20:42:26,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:42:26,851 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:42:26,851 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:42:26,851 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:42:26,852 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:42:21" (3/4) ... [2022-12-13 20:42:26,854 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 20:42:26,854 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:42:26,855 INFO L158 Benchmark]: Toolchain (without parser) took 6298.02ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 106.1MB in the beginning and 117.6MB in the end (delta: -11.5MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2022-12-13 20:42:26,855 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 144.7MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:42:26,855 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.92ms. Allocated memory is still 144.7MB. Free memory was 106.1MB in the beginning and 94.1MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 20:42:26,856 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.87ms. Allocated memory is still 144.7MB. Free memory was 94.1MB in the beginning and 90.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 20:42:26,856 INFO L158 Benchmark]: Boogie Preprocessor took 24.68ms. Allocated memory is still 144.7MB. Free memory was 90.9MB in the beginning and 88.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:42:26,856 INFO L158 Benchmark]: RCFGBuilder took 424.18ms. Allocated memory is still 144.7MB. Free memory was 88.8MB in the beginning and 69.3MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 20:42:26,857 INFO L158 Benchmark]: TraceAbstraction took 5598.99ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 68.4MB in the beginning and 117.6MB in the end (delta: -49.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:42:26,857 INFO L158 Benchmark]: Witness Printer took 3.51ms. Allocated memory is still 174.1MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:42:26,858 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 144.7MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.92ms. Allocated memory is still 144.7MB. Free memory was 106.1MB in the beginning and 94.1MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.87ms. Allocated memory is still 144.7MB. Free memory was 94.1MB in the beginning and 90.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.68ms. Allocated memory is still 144.7MB. Free memory was 90.9MB in the beginning and 88.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 424.18ms. Allocated memory is still 144.7MB. Free memory was 88.8MB in the beginning and 69.3MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 5598.99ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 68.4MB in the beginning and 117.6MB in the end (delta: -49.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.51ms. Allocated memory is still 174.1MB. Free memory is still 117.6MB. 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: 25]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 116. Possible FailurePath: [L124] unsigned int a, b, r; [L125] a = __VERIFIER_nondet_uint() [L127] b = 234770789 [L129] CALL, EXPR mp_add(a, b) [L42] unsigned char a0, a1, a2, a3; [L43] unsigned char b0, b1, b2, b3; [L44] unsigned char r0, r1, r2, r3; [L45] unsigned short carry; [L46] unsigned short partial_sum; [L47] unsigned int r; [L48] unsigned char i; [L49] unsigned char na, nb; [L50] a0 = a [L51] a1 = a >> 8 [L52] a2 = a >> 16U [L53] a3 = a >> 24U [L54] b0 = b [L55] b1 = b >> 8U [L56] b2 = b >> 16U [L57] b3 = b >> 24U [L58] na = (unsigned char)4 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, na=4] [L59] COND TRUE a3 == (unsigned char)0 [L60] na = na - 1 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, na=3] [L61] COND TRUE a2 == (unsigned char)0 [L62] na = na - 1 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, na=2] [L63] COND TRUE a1 == (unsigned char)0 [L64] na = na - 1 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, na=1] [L68] nb = (unsigned char)4 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, na=1, nb=4] [L69] COND FALSE !(b3 == (unsigned char)0) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, na=1, nb=4] [L78] carry = (unsigned short)0 [L79] i = (unsigned char)0 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=0] [L83] COND TRUE i < na VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=0] [L84] COND TRUE i == (unsigned char)0 [L84] partial_sum = partial_sum + a0 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=154] [L85] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=154] [L86] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=154] [L87] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=154] [L89] COND TRUE i < nb VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=154] [L90] COND TRUE i == (unsigned char)0 [L90] partial_sum = partial_sum + b0 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=255] [L91] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=255] [L92] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=255] [L93] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=255] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=255] [L99] COND TRUE i == (unsigned char)0 [L99] r0 = (unsigned char)partial_sum VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=255, r0=255] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=255, r0=255] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=255, r0=255] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=255, r0=255] [L104] i = i + (unsigned char)1 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=255, r0=255] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=0, r0=255] [L83] COND FALSE !(i < na) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=0, r0=255] [L89] COND TRUE i < nb VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=0, r0=255] [L90] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=0, r0=255] [L91] COND TRUE i == (unsigned char)1 [L91] partial_sum = partial_sum + b1 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=81, r0=255] [L92] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=81, r0=255] [L93] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=81, r0=255] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=81, r0=255] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=81, r0=255] [L100] COND TRUE i == (unsigned char)1 [L100] r1 = (unsigned char)partial_sum VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=81, r0=255, r1=81] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=81, r0=255, r1=81] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=81, r0=255, r1=81] [L104] i = i + (unsigned char)1 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=81, r0=255, r1=81] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=255, r1=81] [L83] COND FALSE !(i < na) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=255, r1=81] [L89] COND TRUE i < nb VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=255, r1=81] [L90] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=255, r1=81] [L91] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=255, r1=81] [L92] COND TRUE i == (unsigned char)2 [L92] partial_sum = partial_sum + b2 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=255, r1=81] [L93] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=255, r1=81] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=255, r1=81] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=255, r1=81] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=255, r1=81] [L101] COND TRUE i == (unsigned char)2 [L101] r2 = (unsigned char)partial_sum VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=255, r1=81, r2=254] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=255, r1=81, r2=254] [L104] i = i + (unsigned char)1 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=254, r0=255, r1=81, r2=254] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=255, r1=81, r2=254] [L83] COND FALSE !(i < na) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=255, r1=81, r2=254] [L89] COND TRUE i < nb VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=255, r1=81, r2=254] [L90] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=255, r1=81, r2=254] [L91] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=255, r1=81, r2=254] [L92] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=255, r1=81, r2=254] [L93] COND TRUE i == (unsigned char)3 [L93] partial_sum = partial_sum + b3 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=255, r1=81, r2=254] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=255, r1=81, r2=254] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=255, r1=81, r2=254] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=255, r1=81, r2=254] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=255, r1=81, r2=254] [L102] COND TRUE i == (unsigned char)3 [L102] r3 = (unsigned char)partial_sum VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=255, r1=81, r2=254, r3=13] [L104] i = i + (unsigned char)1 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=4, na=1, nb=4, partial_sum=13, r0=255, r1=81, r2=254, r3=13] [L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=4, na=1, nb=4, partial_sum=13, r0=255, r1=81, r2=254, r3=13] [L107] COND FALSE !(i < (unsigned char)4) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=4, na=1, nb=4, partial_sum=13, r0=255, r1=81, r2=254, r3=13] [L116] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L118] return r; VAL [\old(a)=154, \old(b)=234770789, \result=218103808, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=4, na=1, nb=4, partial_sum=13, r=218103808, r0=255, r1=81, r2=254, r3=13] [L129] RET, EXPR mp_add(a, b) [L129] r = mp_add(a, b) [L131] CALL __VERIFIER_assert(r == a + b) [L24] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L25] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.5s, OverallIterations: 13, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1769 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1769 mSDsluCounter, 2227 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1392 mSDsCounter, 253 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1989 IncrementalHoareTripleChecker+Invalid, 2242 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 253 mSolverCounterUnsat, 835 mSDtfsCounter, 1989 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 275 GetRequests, 208 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=493occurred in iteration=12, InterpolantAutomatonStates: 74, 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, 12 MinimizatonAttempts, 1552 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 634 NumberOfCodeBlocks, 634 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 617 ConstructedInterpolants, 0 QuantifiedInterpolants, 1907 SizeOfPredicates, 6 NumberOfNonLiveVariables, 307 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 459/491 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 20:42:26,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba --- 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 20:42:28,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:42:28,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:42:28,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:42:28,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:42:28,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:42:28,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:42:28,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:42:28,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:42:28,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:42:28,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:42:28,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:42:28,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:42:28,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:42:28,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:42:28,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:42:28,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:42:28,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:42:28,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:42:28,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:42:28,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:42:28,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:42:28,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:42:28,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:42:28,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:42:28,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:42:28,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:42:28,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:42:28,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:42:28,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:42:28,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:42:28,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:42:28,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:42:28,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:42:28,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:42:28,627 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:42:28,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:42:28,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:42:28,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:42:28,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:42:28,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:42:28,630 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-12-13 20:42:28,655 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:42:28,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:42:28,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:42:28,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:42:28,656 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:42:28,656 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:42:28,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:42:28,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:42:28,656 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:42:28,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:42:28,656 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:42:28,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:42:28,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:42:28,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:42:28,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:42:28,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:42:28,657 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 20:42:28,657 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 20:42:28,657 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 20:42:28,657 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:42:28,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:42:28,658 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:42:28,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:42:28,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:42:28,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:42:28,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:42:28,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:42:28,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:42:28,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:42:28,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:42:28,658 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 20:42:28,659 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 20:42:28,659 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:42:28,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:42:28,659 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:42:28,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:42:28,659 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 20:42:28,659 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:42:28,659 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_3f696bc3-34e5-47d6-b84a-3f51c329b426/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba [2022-12-13 20:42:28,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:42:28,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:42:28,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:42:28,927 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:42:28,928 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:42:28,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/bitvector/byte_add_2-2.i [2022-12-13 20:42:31,541 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:42:31,704 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:42:31,704 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/sv-benchmarks/c/bitvector/byte_add_2-2.i [2022-12-13 20:42:31,710 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/data/b1e8435c5/05cfb6d31cd6471eb0c6288401e82ef5/FLAGe4c3f1fe9 [2022-12-13 20:42:31,722 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/data/b1e8435c5/05cfb6d31cd6471eb0c6288401e82ef5 [2022-12-13 20:42:31,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:42:31,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:42:31,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:42:31,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:42:31,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:42:31,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:42:31" (1/1) ... [2022-12-13 20:42:31,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5437dd43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:31, skipping insertion in model container [2022-12-13 20:42:31,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:42:31" (1/1) ... [2022-12-13 20:42:31,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:42:31,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:42:31,859 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_3f696bc3-34e5-47d6-b84a-3f51c329b426/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2022-12-13 20:42:31,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:42:31,893 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:42:31,905 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_3f696bc3-34e5-47d6-b84a-3f51c329b426/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2022-12-13 20:42:31,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:42:31,941 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:42:31,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:31 WrapperNode [2022-12-13 20:42:31,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:42:31,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:42:31,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:42:31,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:42:31,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:31" (1/1) ... [2022-12-13 20:42:31,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:31" (1/1) ... [2022-12-13 20:42:31,981 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 123 [2022-12-13 20:42:31,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:42:31,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:42:31,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:42:31,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:42:31,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:31" (1/1) ... [2022-12-13 20:42:31,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:31" (1/1) ... [2022-12-13 20:42:31,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:31" (1/1) ... [2022-12-13 20:42:31,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:31" (1/1) ... [2022-12-13 20:42:32,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:31" (1/1) ... [2022-12-13 20:42:32,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:31" (1/1) ... [2022-12-13 20:42:32,006 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:31" (1/1) ... [2022-12-13 20:42:32,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:31" (1/1) ... [2022-12-13 20:42:32,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:42:32,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:42:32,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:42:32,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:42:32,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:31" (1/1) ... [2022-12-13 20:42:32,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:42:32,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:42:32,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:42:32,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:42:32,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:42:32,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 20:42:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:42:32,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:42:32,150 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:42:32,152 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:42:32,365 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:42:32,372 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:42:32,372 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 20:42:32,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:42:32 BoogieIcfgContainer [2022-12-13 20:42:32,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:42:32,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:42:32,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:42:32,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:42:32,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:42:31" (1/3) ... [2022-12-13 20:42:32,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17fae664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:42:32, skipping insertion in model container [2022-12-13 20:42:32,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:42:31" (2/3) ... [2022-12-13 20:42:32,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17fae664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:42:32, skipping insertion in model container [2022-12-13 20:42:32,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:42:32" (3/3) ... [2022-12-13 20:42:32,383 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_2-2.i [2022-12-13 20:42:32,404 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:42:32,404 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 20:42:32,446 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:42:32,451 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;@39433e61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:42:32,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 20:42:32,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 1.775) internal successors, (71), 41 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:32,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 20:42:32,461 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:32,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:32,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:32,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:32,466 INFO L85 PathProgramCache]: Analyzing trace with hash 255061167, now seen corresponding path program 1 times [2022-12-13 20:42:32,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:42:32,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546012452] [2022-12-13 20:42:32,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:32,479 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 20:42:32,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:42:32,480 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:32,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:32,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 20:42:32,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:32,581 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 20:42:32,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:42:32,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:42:32,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546012452] [2022-12-13 20:42:32,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546012452] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:32,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:32,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:42:32,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841760153] [2022-12-13 20:42:32,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:32,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:42:32,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:42:32,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:42:32,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:42:32,617 INFO L87 Difference]: Start difference. First operand has 42 states, 40 states have (on average 1.775) internal successors, (71), 41 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:32,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:32,630 INFO L93 Difference]: Finished difference Result 57 states and 92 transitions. [2022-12-13 20:42:32,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:42:32,632 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-13 20:42:32,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:32,638 INFO L225 Difference]: With dead ends: 57 [2022-12-13 20:42:32,638 INFO L226 Difference]: Without dead ends: 38 [2022-12-13 20:42:32,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:42:32,642 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:32,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:42:32,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-13 20:42:32,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-12-13 20:42:32,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:32,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 64 transitions. [2022-12-13 20:42:32,665 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 64 transitions. Word has length 12 [2022-12-13 20:42:32,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:32,665 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 64 transitions. [2022-12-13 20:42:32,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:32,665 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 64 transitions. [2022-12-13 20:42:32,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 20:42:32,666 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:32,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:32,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:32,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:32,869 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:32,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:32,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1803477009, now seen corresponding path program 1 times [2022-12-13 20:42:32,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:42:32,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126013556] [2022-12-13 20:42:32,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:32,873 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 20:42:32,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:42:32,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:32,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:32,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:42:32,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:33,031 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 20:42:33,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:42:33,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:42:33,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126013556] [2022-12-13 20:42:33,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126013556] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:33,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:33,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:42:33,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867749592] [2022-12-13 20:42:33,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:33,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:42:33,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:42:33,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:42:33,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:42:33,034 INFO L87 Difference]: Start difference. First operand 38 states and 64 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:33,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:33,141 INFO L93 Difference]: Finished difference Result 116 states and 201 transitions. [2022-12-13 20:42:33,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:42:33,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-13 20:42:33,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:33,143 INFO L225 Difference]: With dead ends: 116 [2022-12-13 20:42:33,143 INFO L226 Difference]: Without dead ends: 88 [2022-12-13 20:42:33,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:42:33,144 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 92 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:33,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 137 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:42:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-12-13 20:42:33,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 81. [2022-12-13 20:42:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.625) internal successors, (130), 80 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:33,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 130 transitions. [2022-12-13 20:42:33,152 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 130 transitions. Word has length 12 [2022-12-13 20:42:33,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:33,152 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 130 transitions. [2022-12-13 20:42:33,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:33,152 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 130 transitions. [2022-12-13 20:42:33,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 20:42:33,153 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:33,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:33,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:33,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:33,355 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:33,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:33,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1087802014, now seen corresponding path program 1 times [2022-12-13 20:42:33,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:42:33,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502574293] [2022-12-13 20:42:33,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:33,359 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 20:42:33,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:42:33,362 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:33,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:33,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 20:42:33,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:33,521 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 20:42:33,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:42:33,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:42:33,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502574293] [2022-12-13 20:42:33,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502574293] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:33,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:33,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:42:33,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925543454] [2022-12-13 20:42:33,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:33,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:42:33,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:42:33,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:42:33,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:42:33,524 INFO L87 Difference]: Start difference. First operand 81 states and 130 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:33,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:33,534 INFO L93 Difference]: Finished difference Result 86 states and 134 transitions. [2022-12-13 20:42:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:42:33,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-13 20:42:33,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:33,535 INFO L225 Difference]: With dead ends: 86 [2022-12-13 20:42:33,536 INFO L226 Difference]: Without dead ends: 55 [2022-12-13 20:42:33,536 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 20:42:33,537 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 55 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:33,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 58 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:42:33,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-12-13 20:42:33,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-12-13 20:42:33,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 54 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:33,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 80 transitions. [2022-12-13 20:42:33,545 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 80 transitions. Word has length 13 [2022-12-13 20:42:33,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:33,545 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 80 transitions. [2022-12-13 20:42:33,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:33,545 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 80 transitions. [2022-12-13 20:42:33,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 20:42:33,546 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:33,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:33,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 20:42:33,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:33,748 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:33,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:33,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1480128500, now seen corresponding path program 1 times [2022-12-13 20:42:33,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:42:33,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553373700] [2022-12-13 20:42:33,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:33,752 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 20:42:33,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:42:33,756 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:33,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:33,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:42:33,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:33,937 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 20:42:33,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:42:33,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:42:33,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553373700] [2022-12-13 20:42:33,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553373700] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:33,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:33,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:42:33,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988714445] [2022-12-13 20:42:33,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:33,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:42:33,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:42:33,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:42:33,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:42:33,940 INFO L87 Difference]: Start difference. First operand 55 states and 80 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:34,063 INFO L93 Difference]: Finished difference Result 151 states and 219 transitions. [2022-12-13 20:42:34,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:42:34,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-13 20:42:34,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:34,064 INFO L225 Difference]: With dead ends: 151 [2022-12-13 20:42:34,064 INFO L226 Difference]: Without dead ends: 107 [2022-12-13 20:42:34,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:42:34,066 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 65 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:34,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 146 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:42:34,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-12-13 20:42:34,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 60. [2022-12-13 20:42:34,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.4406779661016949) internal successors, (85), 59 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:34,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 85 transitions. [2022-12-13 20:42:34,072 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 85 transitions. Word has length 25 [2022-12-13 20:42:34,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:34,072 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 85 transitions. [2022-12-13 20:42:34,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:34,073 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 85 transitions. [2022-12-13 20:42:34,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 20:42:34,073 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:34,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:34,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:34,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:34,275 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:34,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:34,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1384042382, now seen corresponding path program 1 times [2022-12-13 20:42:34,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:42:34,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112632649] [2022-12-13 20:42:34,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:34,278 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 20:42:34,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:42:34,282 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:34,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:34,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:42:34,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:34,480 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 20:42:34,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:42:34,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:42:34,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112632649] [2022-12-13 20:42:34,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112632649] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:34,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:34,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:42:34,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912323683] [2022-12-13 20:42:34,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:34,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:42:34,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:42:34,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:42:34,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:42:34,483 INFO L87 Difference]: Start difference. First operand 60 states and 85 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:34,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:34,651 INFO L93 Difference]: Finished difference Result 201 states and 290 transitions. [2022-12-13 20:42:34,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:42:34,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-12-13 20:42:34,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:34,653 INFO L225 Difference]: With dead ends: 201 [2022-12-13 20:42:34,653 INFO L226 Difference]: Without dead ends: 157 [2022-12-13 20:42:34,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:42:34,654 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 117 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:34,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 312 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:42:34,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-12-13 20:42:34,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 60. [2022-12-13 20:42:34,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.4406779661016949) internal successors, (85), 59 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:34,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 85 transitions. [2022-12-13 20:42:34,663 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 85 transitions. Word has length 26 [2022-12-13 20:42:34,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:34,663 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 85 transitions. [2022-12-13 20:42:34,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:34,664 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 85 transitions. [2022-12-13 20:42:34,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-13 20:42:34,664 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:34,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:34,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:34,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:34,866 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:34,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:34,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1985045161, now seen corresponding path program 1 times [2022-12-13 20:42:34,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:42:34,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632615201] [2022-12-13 20:42:34,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:34,870 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 20:42:34,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:42:34,872 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:34,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 20:42:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:35,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:42:35,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:35,082 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 20:42:35,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:42:35,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:42:35,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632615201] [2022-12-13 20:42:35,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632615201] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:35,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:35,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:42:35,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293446687] [2022-12-13 20:42:35,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:35,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:42:35,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:42:35,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:42:35,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:42:35,085 INFO L87 Difference]: Start difference. First operand 60 states and 85 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:35,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:35,426 INFO L93 Difference]: Finished difference Result 269 states and 387 transitions. [2022-12-13 20:42:35,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 20:42:35,426 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-12-13 20:42:35,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:35,427 INFO L225 Difference]: With dead ends: 269 [2022-12-13 20:42:35,427 INFO L226 Difference]: Without dead ends: 221 [2022-12-13 20:42:35,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:42:35,428 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 361 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:35,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 462 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:42:35,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-12-13 20:42:35,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 57. [2022-12-13 20:42:35,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 56 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:35,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2022-12-13 20:42:35,434 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 27 [2022-12-13 20:42:35,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:35,435 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 80 transitions. [2022-12-13 20:42:35,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:35,435 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 80 transitions. [2022-12-13 20:42:35,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 20:42:35,436 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:35,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:35,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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)] Ended with exit code 0 [2022-12-13 20:42:35,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:35,638 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:35,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:35,640 INFO L85 PathProgramCache]: Analyzing trace with hash 221982208, now seen corresponding path program 1 times [2022-12-13 20:42:35,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:42:35,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474813977] [2022-12-13 20:42:35,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:35,642 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 20:42:35,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:42:35,645 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:35,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (8)] Waiting until timeout for monitored process [2022-12-13 20:42:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:35,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:42:35,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:35,783 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 20:42:35,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:42:35,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:42:35,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474813977] [2022-12-13 20:42:35,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474813977] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:35,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:35,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:42:35,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119716508] [2022-12-13 20:42:35,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:35,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:42:35,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:42:35,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:42:35,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:42:35,785 INFO L87 Difference]: Start difference. First operand 57 states and 80 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:35,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:35,920 INFO L93 Difference]: Finished difference Result 128 states and 190 transitions. [2022-12-13 20:42:35,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:42:35,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-12-13 20:42:35,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:35,921 INFO L225 Difference]: With dead ends: 128 [2022-12-13 20:42:35,921 INFO L226 Difference]: Without dead ends: 82 [2022-12-13 20:42:35,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:42:35,922 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 88 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:35,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 54 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:42:35,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-12-13 20:42:35,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2022-12-13 20:42:35,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.3291139240506329) internal successors, (105), 79 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:35,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 105 transitions. [2022-12-13 20:42:35,928 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 105 transitions. Word has length 29 [2022-12-13 20:42:35,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:35,928 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 105 transitions. [2022-12-13 20:42:35,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:35,928 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 105 transitions. [2022-12-13 20:42:35,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 20:42:35,929 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:35,929 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:35,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (8)] Ended with exit code 0 [2022-12-13 20:42:36,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:36,131 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:36,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:36,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1280602341, now seen corresponding path program 1 times [2022-12-13 20:42:36,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:42:36,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004345019] [2022-12-13 20:42:36,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:36,134 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 20:42:36,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:42:36,137 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:36,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (9)] Waiting until timeout for monitored process [2022-12-13 20:42:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:36,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:42:36,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:36,302 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:42:36,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:42:36,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:42:36,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004345019] [2022-12-13 20:42:36,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004345019] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:36,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:36,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:42:36,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745919913] [2022-12-13 20:42:36,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:36,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:42:36,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:42:36,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:42:36,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:42:36,304 INFO L87 Difference]: Start difference. First operand 80 states and 105 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:36,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:36,446 INFO L93 Difference]: Finished difference Result 226 states and 295 transitions. [2022-12-13 20:42:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:42:36,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-12-13 20:42:36,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:36,447 INFO L225 Difference]: With dead ends: 226 [2022-12-13 20:42:36,447 INFO L226 Difference]: Without dead ends: 157 [2022-12-13 20:42:36,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:42:36,449 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 85 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:36,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 129 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:42:36,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-12-13 20:42:36,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 133. [2022-12-13 20:42:36,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.3181818181818181) internal successors, (174), 132 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:36,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 174 transitions. [2022-12-13 20:42:36,458 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 174 transitions. Word has length 42 [2022-12-13 20:42:36,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:36,458 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 174 transitions. [2022-12-13 20:42:36,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:36,459 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 174 transitions. [2022-12-13 20:42:36,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-13 20:42:36,459 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:36,460 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:36,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (9)] Ended with exit code 0 [2022-12-13 20:42:36,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:36,661 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:36,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:36,662 INFO L85 PathProgramCache]: Analyzing trace with hash -649034713, now seen corresponding path program 1 times [2022-12-13 20:42:36,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:42:36,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453389210] [2022-12-13 20:42:36,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:36,662 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 20:42:36,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:42:36,664 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:36,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (10)] Waiting until timeout for monitored process [2022-12-13 20:42:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:36,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 20:42:36,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:42:36,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:42:36,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:42:36,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453389210] [2022-12-13 20:42:36,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453389210] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:36,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:36,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 20:42:36,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218980139] [2022-12-13 20:42:36,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:36,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:42:36,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:42:36,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:42:36,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:42:36,892 INFO L87 Difference]: Start difference. First operand 133 states and 174 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:37,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:37,118 INFO L93 Difference]: Finished difference Result 301 states and 391 transitions. [2022-12-13 20:42:37,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:42:37,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-12-13 20:42:37,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:37,119 INFO L225 Difference]: With dead ends: 301 [2022-12-13 20:42:37,119 INFO L226 Difference]: Without dead ends: 232 [2022-12-13 20:42:37,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:42:37,120 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 122 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:37,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 271 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:42:37,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-12-13 20:42:37,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 133. [2022-12-13 20:42:37,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.3181818181818181) internal successors, (174), 132 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:37,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 174 transitions. [2022-12-13 20:42:37,136 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 174 transitions. Word has length 43 [2022-12-13 20:42:37,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:37,137 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 174 transitions. [2022-12-13 20:42:37,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:37,137 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 174 transitions. [2022-12-13 20:42:37,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 20:42:37,138 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:37,138 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:37,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (10)] Forceful destruction successful, exit code 0 [2022-12-13 20:42:37,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:37,339 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:37,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:37,340 INFO L85 PathProgramCache]: Analyzing trace with hash -2080233776, now seen corresponding path program 1 times [2022-12-13 20:42:37,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:42:37,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286978656] [2022-12-13 20:42:37,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:37,340 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 20:42:37,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:42:37,341 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:37,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (11)] Waiting until timeout for monitored process [2022-12-13 20:42:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:37,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 20:42:37,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:42:37,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:42:37,536 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:42:37,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:42:37,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286978656] [2022-12-13 20:42:37,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286978656] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:42:37,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:42:37,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 20:42:37,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115268079] [2022-12-13 20:42:37,537 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:42:37,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 20:42:37,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:42:37,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 20:42:37,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:42:37,543 INFO L87 Difference]: Start difference. First operand 133 states and 174 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:37,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:37,776 INFO L93 Difference]: Finished difference Result 451 states and 608 transitions. [2022-12-13 20:42:37,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 20:42:37,777 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-12-13 20:42:37,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:37,778 INFO L225 Difference]: With dead ends: 451 [2022-12-13 20:42:37,778 INFO L226 Difference]: Without dead ends: 335 [2022-12-13 20:42:37,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2022-12-13 20:42:37,779 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 296 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:37,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 376 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:42:37,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-12-13 20:42:37,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 192. [2022-12-13 20:42:37,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.3769633507853403) internal successors, (263), 191 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:37,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 263 transitions. [2022-12-13 20:42:37,792 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 263 transitions. Word has length 44 [2022-12-13 20:42:37,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:37,792 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 263 transitions. [2022-12-13 20:42:37,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:37,792 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 263 transitions. [2022-12-13 20:42:37,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 20:42:37,793 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:37,793 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:37,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (11)] Ended with exit code 0 [2022-12-13 20:42:37,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:37,994 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:37,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:37,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1822068338, now seen corresponding path program 1 times [2022-12-13 20:42:37,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:42:37,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303783449] [2022-12-13 20:42:37,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:37,995 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 20:42:37,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:42:37,997 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:37,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (12)] Waiting until timeout for monitored process [2022-12-13 20:42:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:38,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 20:42:38,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:38,200 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:42:38,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:42:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:42:38,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:42:38,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303783449] [2022-12-13 20:42:38,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303783449] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:42:38,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:42:38,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 20:42:38,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238337183] [2022-12-13 20:42:38,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:42:38,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 20:42:38,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:42:38,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 20:42:38,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:42:38,275 INFO L87 Difference]: Start difference. First operand 192 states and 263 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:38,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:38,525 INFO L93 Difference]: Finished difference Result 592 states and 893 transitions. [2022-12-13 20:42:38,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 20:42:38,525 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-12-13 20:42:38,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:38,528 INFO L225 Difference]: With dead ends: 592 [2022-12-13 20:42:38,528 INFO L226 Difference]: Without dead ends: 417 [2022-12-13 20:42:38,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2022-12-13 20:42:38,529 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 230 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:38,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 92 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:42:38,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-12-13 20:42:38,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 341. [2022-12-13 20:42:38,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.3941176470588235) internal successors, (474), 340 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:38,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 474 transitions. [2022-12-13 20:42:38,547 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 474 transitions. Word has length 44 [2022-12-13 20:42:38,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:38,547 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 474 transitions. [2022-12-13 20:42:38,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:38,547 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 474 transitions. [2022-12-13 20:42:38,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 20:42:38,548 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:38,548 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:38,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (12)] Ended with exit code 0 [2022-12-13 20:42:38,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:38,749 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:38,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:38,749 INFO L85 PathProgramCache]: Analyzing trace with hash 343661932, now seen corresponding path program 1 times [2022-12-13 20:42:38,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:42:38,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929613794] [2022-12-13 20:42:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:38,749 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 20:42:38,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:42:38,750 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:38,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (13)] Waiting until timeout for monitored process [2022-12-13 20:42:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:38,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 20:42:38,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:38,910 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 66 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 20:42:38,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:42:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 20:42:38,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:42:38,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929613794] [2022-12-13 20:42:38,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929613794] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:42:38,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:42:38,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2022-12-13 20:42:38,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618086318] [2022-12-13 20:42:38,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:42:38,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 20:42:38,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:42:38,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 20:42:38,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:42:38,981 INFO L87 Difference]: Start difference. First operand 341 states and 474 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:39,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:39,165 INFO L93 Difference]: Finished difference Result 945 states and 1261 transitions. [2022-12-13 20:42:39,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 20:42:39,166 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-12-13 20:42:39,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:39,168 INFO L225 Difference]: With dead ends: 945 [2022-12-13 20:42:39,168 INFO L226 Difference]: Without dead ends: 621 [2022-12-13 20:42:39,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 20:42:39,169 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 205 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:39,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 288 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:42:39,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-12-13 20:42:39,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 341. [2022-12-13 20:42:39,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.3764705882352941) internal successors, (468), 340 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:39,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 468 transitions. [2022-12-13 20:42:39,186 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 468 transitions. Word has length 70 [2022-12-13 20:42:39,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:39,186 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 468 transitions. [2022-12-13 20:42:39,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:39,187 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 468 transitions. [2022-12-13 20:42:39,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 20:42:39,189 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:39,190 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:39,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (13)] Ended with exit code 0 [2022-12-13 20:42:39,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:39,390 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:39,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:39,391 INFO L85 PathProgramCache]: Analyzing trace with hash 484210542, now seen corresponding path program 2 times [2022-12-13 20:42:39,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:42:39,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085995659] [2022-12-13 20:42:39,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:42:39,392 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 20:42:39,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:42:39,393 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:39,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (14)] Waiting until timeout for monitored process [2022-12-13 20:42:39,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:42:39,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:42:39,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-13 20:42:39,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:42:41,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:42:44,669 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:42:44,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:42:44,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085995659] [2022-12-13 20:42:44,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085995659] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:42:44,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:42:44,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 44 [2022-12-13 20:42:44,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728335113] [2022-12-13 20:42:44,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:42:44,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-13 20:42:44,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:42:44,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-13 20:42:44,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 20:42:44,672 INFO L87 Difference]: Start difference. First operand 341 states and 468 transitions. Second operand has 44 states, 44 states have (on average 3.1363636363636362) internal successors, (138), 44 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:58,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:58,177 INFO L93 Difference]: Finished difference Result 2188 states and 2902 transitions. [2022-12-13 20:42:58,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-12-13 20:42:58,178 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.1363636363636362) internal successors, (138), 44 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-12-13 20:42:58,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:58,181 INFO L225 Difference]: With dead ends: 2188 [2022-12-13 20:42:58,181 INFO L226 Difference]: Without dead ends: 1999 [2022-12-13 20:42:58,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2481 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=2223, Invalid=10887, Unknown=0, NotChecked=0, Total=13110 [2022-12-13 20:42:58,184 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 2582 mSDsluCounter, 6871 mSDsCounter, 0 mSdLazyCounter, 3858 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2582 SdHoareTripleChecker+Valid, 7266 SdHoareTripleChecker+Invalid, 3996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 3858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:58,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2582 Valid, 7266 Invalid, 3996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 3858 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 20:42:58,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2022-12-13 20:42:58,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 893. [2022-12-13 20:42:58,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 892 states have (on average 1.4002242152466369) internal successors, (1249), 892 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:58,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1249 transitions. [2022-12-13 20:42:58,275 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1249 transitions. Word has length 70 [2022-12-13 20:42:58,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:58,276 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 1249 transitions. [2022-12-13 20:42:58,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.1363636363636362) internal successors, (138), 44 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:58,276 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1249 transitions. [2022-12-13 20:42:58,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 20:42:58,278 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:58,278 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:58,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (14)] Forceful destruction successful, exit code 0 [2022-12-13 20:42:58,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:58,478 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:58,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:58,479 INFO L85 PathProgramCache]: Analyzing trace with hash -247756884, now seen corresponding path program 1 times [2022-12-13 20:42:58,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:42:58,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172109813] [2022-12-13 20:42:58,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:58,479 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 20:42:58,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:42:58,480 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:58,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (15)] Waiting until timeout for monitored process [2022-12-13 20:42:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:58,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:42:58,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:58,599 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 20:42:58,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:42:58,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:42:58,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172109813] [2022-12-13 20:42:58,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172109813] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:42:58,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:42:58,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:42:58,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241136549] [2022-12-13 20:42:58,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:42:58,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:42:58,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:42:58,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:42:58,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:42:58,600 INFO L87 Difference]: Start difference. First operand 893 states and 1249 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:58,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:58,941 INFO L93 Difference]: Finished difference Result 1317 states and 1812 transitions. [2022-12-13 20:42:58,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:42:58,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-12-13 20:42:58,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:58,945 INFO L225 Difference]: With dead ends: 1317 [2022-12-13 20:42:58,945 INFO L226 Difference]: Without dead ends: 1140 [2022-12-13 20:42:58,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:42:58,946 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 173 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:58,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 497 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:42:58,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2022-12-13 20:42:59,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 740. [2022-12-13 20:42:59,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 739 states have (on average 1.401894451962111) internal successors, (1036), 739 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:59,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1036 transitions. [2022-12-13 20:42:59,025 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1036 transitions. Word has length 70 [2022-12-13 20:42:59,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:59,025 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1036 transitions. [2022-12-13 20:42:59,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:42:59,026 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1036 transitions. [2022-12-13 20:42:59,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-13 20:42:59,027 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:59,027 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:59,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (15)] Ended with exit code 0 [2022-12-13 20:42:59,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:59,228 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:59,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:59,229 INFO L85 PathProgramCache]: Analyzing trace with hash 946149333, now seen corresponding path program 1 times [2022-12-13 20:42:59,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:42:59,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099453001] [2022-12-13 20:42:59,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:59,231 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 20:42:59,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:42:59,234 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:42:59,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (16)] Waiting until timeout for monitored process [2022-12-13 20:42:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:59,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 20:42:59,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 63 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:42:59,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:42:59,631 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 53 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:42:59,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:42:59,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099453001] [2022-12-13 20:42:59,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099453001] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:42:59,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:42:59,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 20:42:59,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419105030] [2022-12-13 20:42:59,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:42:59,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 20:42:59,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:42:59,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 20:42:59,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:42:59,633 INFO L87 Difference]: Start difference. First operand 740 states and 1036 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:43:00,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:00,453 INFO L93 Difference]: Finished difference Result 2675 states and 3771 transitions. [2022-12-13 20:43:00,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:43:00,454 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-12-13 20:43:00,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:00,457 INFO L225 Difference]: With dead ends: 2675 [2022-12-13 20:43:00,457 INFO L226 Difference]: Without dead ends: 1952 [2022-12-13 20:43:00,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:43:00,458 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 279 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 20:43:00,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 197 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 20:43:00,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2022-12-13 20:43:00,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1532. [2022-12-13 20:43:00,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1531 states have (on average 1.4225996080992815) internal successors, (2178), 1531 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:43:00,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 2178 transitions. [2022-12-13 20:43:00,562 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 2178 transitions. Word has length 72 [2022-12-13 20:43:00,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:43:00,562 INFO L495 AbstractCegarLoop]: Abstraction has 1532 states and 2178 transitions. [2022-12-13 20:43:00,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:43:00,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 2178 transitions. [2022-12-13 20:43:00,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-13 20:43:00,564 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:00,564 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:43:00,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (16)] Forceful destruction successful, exit code 0 [2022-12-13 20:43:00,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:43:00,764 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:00,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:00,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1135042114, now seen corresponding path program 1 times [2022-12-13 20:43:00,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:43:00,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770824703] [2022-12-13 20:43:00,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:00,765 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 20:43:00,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:43:00,766 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:43:00,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (17)] Waiting until timeout for monitored process [2022-12-13 20:43:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:00,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-13 20:43:00,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:43:03,693 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:43:03,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:43:07,324 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:43:07,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:43:07,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770824703] [2022-12-13 20:43:07,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770824703] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:43:07,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:43:07,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2022-12-13 20:43:07,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721902983] [2022-12-13 20:43:07,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:43:07,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-13 20:43:07,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:43:07,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-13 20:43:07,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1921, Unknown=0, NotChecked=0, Total=2070 [2022-12-13 20:43:07,326 INFO L87 Difference]: Start difference. First operand 1532 states and 2178 transitions. Second operand has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:44:04,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:44:04,142 INFO L93 Difference]: Finished difference Result 8647 states and 11483 transitions. [2022-12-13 20:44:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2022-12-13 20:44:04,143 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-12-13 20:44:04,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:44:04,155 INFO L225 Difference]: With dead ends: 8647 [2022-12-13 20:44:04,155 INFO L226 Difference]: Without dead ends: 7760 [2022-12-13 20:44:04,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18480 ImplicationChecksByTransitivity, 49.8s TimeCoverageRelationStatistics Valid=7680, Invalid=51126, Unknown=0, NotChecked=0, Total=58806 [2022-12-13 20:44:04,164 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 2986 mSDsluCounter, 15452 mSDsCounter, 0 mSdLazyCounter, 9091 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2986 SdHoareTripleChecker+Valid, 16169 SdHoareTripleChecker+Invalid, 9405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 9091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-12-13 20:44:04,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2986 Valid, 16169 Invalid, 9405 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [314 Valid, 9091 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-12-13 20:44:04,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7760 states. [2022-12-13 20:44:04,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7760 to 4199. [2022-12-13 20:44:04,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4199 states, 4198 states have (on average 1.4204383039542638) internal successors, (5963), 4198 states have internal predecessors, (5963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:44:04,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4199 states to 4199 states and 5963 transitions. [2022-12-13 20:44:04,576 INFO L78 Accepts]: Start accepts. Automaton has 4199 states and 5963 transitions. Word has length 74 [2022-12-13 20:44:04,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:44:04,576 INFO L495 AbstractCegarLoop]: Abstraction has 4199 states and 5963 transitions. [2022-12-13 20:44:04,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:44:04,577 INFO L276 IsEmpty]: Start isEmpty. Operand 4199 states and 5963 transitions. [2022-12-13 20:44:04,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-13 20:44:04,580 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:44:04,580 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:44:04,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (17)] Ended with exit code 0 [2022-12-13 20:44:04,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:44:04,782 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:44:04,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:44:04,783 INFO L85 PathProgramCache]: Analyzing trace with hash -777616002, now seen corresponding path program 1 times [2022-12-13 20:44:04,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:44:04,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150224204] [2022-12-13 20:44:04,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:44:04,784 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 20:44:04,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:44:04,787 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:44:04,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (18)] Waiting until timeout for monitored process [2022-12-13 20:44:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:04,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-13 20:44:04,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:44:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:44:08,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:44:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:44:11,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:44:11,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150224204] [2022-12-13 20:44:11,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150224204] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:44:11,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:44:11,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2022-12-13 20:44:11,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282019853] [2022-12-13 20:44:11,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:44:11,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-13 20:44:11,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:44:11,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-13 20:44:11,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1933, Unknown=0, NotChecked=0, Total=2070 [2022-12-13 20:44:11,336 INFO L87 Difference]: Start difference. First operand 4199 states and 5963 transitions. Second operand has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:44:39,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:44:39,881 INFO L93 Difference]: Finished difference Result 10135 states and 13775 transitions. [2022-12-13 20:44:39,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-12-13 20:44:39,883 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-12-13 20:44:39,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:44:39,894 INFO L225 Difference]: With dead ends: 10135 [2022-12-13 20:44:39,894 INFO L226 Difference]: Without dead ends: 8300 [2022-12-13 20:44:39,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5270 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=2685, Invalid=18777, Unknown=0, NotChecked=0, Total=21462 [2022-12-13 20:44:39,897 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1654 mSDsluCounter, 9368 mSDsCounter, 0 mSdLazyCounter, 5411 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 9854 SdHoareTripleChecker+Invalid, 5520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 5411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:44:39,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1654 Valid, 9854 Invalid, 5520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 5411 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-12-13 20:44:39,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8300 states. [2022-12-13 20:44:40,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8300 to 4683. [2022-12-13 20:44:40,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4683 states, 4682 states have (on average 1.4235369500213584) internal successors, (6665), 4682 states have internal predecessors, (6665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:44:40,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4683 states to 4683 states and 6665 transitions. [2022-12-13 20:44:40,295 INFO L78 Accepts]: Start accepts. Automaton has 4683 states and 6665 transitions. Word has length 74 [2022-12-13 20:44:40,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:44:40,295 INFO L495 AbstractCegarLoop]: Abstraction has 4683 states and 6665 transitions. [2022-12-13 20:44:40,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:44:40,295 INFO L276 IsEmpty]: Start isEmpty. Operand 4683 states and 6665 transitions. [2022-12-13 20:44:40,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-13 20:44:40,298 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:44:40,298 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:44:40,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (18)] Ended with exit code 0 [2022-12-13 20:44:40,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:44:40,499 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:44:40,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:44:40,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1420916641, now seen corresponding path program 1 times [2022-12-13 20:44:40,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:44:40,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280968201] [2022-12-13 20:44:40,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:44:40,501 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 20:44:40,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:44:40,502 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:44:40,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (19)] Waiting until timeout for monitored process [2022-12-13 20:44:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:40,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:44:40,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:44:40,790 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 14 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:44:40,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:44:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 14 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:44:40,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:44:40,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280968201] [2022-12-13 20:44:40,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280968201] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:44:40,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:44:40,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-12-13 20:44:40,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655800088] [2022-12-13 20:44:40,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:44:40,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 20:44:40,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:44:40,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 20:44:40,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-12-13 20:44:40,905 INFO L87 Difference]: Start difference. First operand 4683 states and 6665 transitions. Second operand has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 12 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:44:42,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:44:42,723 INFO L93 Difference]: Finished difference Result 18051 states and 27684 transitions. [2022-12-13 20:44:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 20:44:42,724 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 12 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-12-13 20:44:42,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:44:42,738 INFO L225 Difference]: With dead ends: 18051 [2022-12-13 20:44:42,738 INFO L226 Difference]: Without dead ends: 9100 [2022-12-13 20:44:42,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-12-13 20:44:42,742 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 417 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 20:44:42,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 173 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 20:44:42,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9100 states. [2022-12-13 20:44:43,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9100 to 6200. [2022-12-13 20:44:43,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6200 states, 6199 states have (on average 1.2282626230037104) internal successors, (7614), 6199 states have internal predecessors, (7614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:44:43,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6200 states to 6200 states and 7614 transitions. [2022-12-13 20:44:43,434 INFO L78 Accepts]: Start accepts. Automaton has 6200 states and 7614 transitions. Word has length 76 [2022-12-13 20:44:43,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:44:43,434 INFO L495 AbstractCegarLoop]: Abstraction has 6200 states and 7614 transitions. [2022-12-13 20:44:43,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 12 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:44:43,434 INFO L276 IsEmpty]: Start isEmpty. Operand 6200 states and 7614 transitions. [2022-12-13 20:44:43,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 20:44:43,435 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:44:43,435 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:44:43,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (19)] Ended with exit code 0 [2022-12-13 20:44:43,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:44:43,637 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:44:43,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:44:43,638 INFO L85 PathProgramCache]: Analyzing trace with hash 881251465, now seen corresponding path program 1 times [2022-12-13 20:44:43,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:44:43,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753673439] [2022-12-13 20:44:43,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:44:43,639 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 20:44:43,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:44:43,642 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:44:43,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (20)] Waiting until timeout for monitored process [2022-12-13 20:44:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:43,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-13 20:44:43,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:44:47,937 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:44:47,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:44:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:44:53,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:44:53,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753673439] [2022-12-13 20:44:53,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753673439] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:44:53,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:44:53,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-12-13 20:44:53,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561824005] [2022-12-13 20:44:53,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:44:53,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-13 20:44:53,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:44:53,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-13 20:44:53,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2277, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 20:44:53,169 INFO L87 Difference]: Start difference. First operand 6200 states and 7614 transitions. Second operand has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:41,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:45:41,510 INFO L93 Difference]: Finished difference Result 7925 states and 9591 transitions. [2022-12-13 20:45:41,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-12-13 20:45:41,511 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-12-13 20:45:41,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:45:41,521 INFO L225 Difference]: With dead ends: 7925 [2022-12-13 20:45:41,521 INFO L226 Difference]: Without dead ends: 7682 [2022-12-13 20:45:41,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9565 ImplicationChecksByTransitivity, 46.4s TimeCoverageRelationStatistics Valid=4344, Invalid=31566, Unknown=0, NotChecked=0, Total=35910 [2022-12-13 20:45:41,524 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 2724 mSDsluCounter, 7757 mSDsCounter, 0 mSdLazyCounter, 4485 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2724 SdHoareTripleChecker+Valid, 8039 SdHoareTripleChecker+Invalid, 4717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 4485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:45:41,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2724 Valid, 8039 Invalid, 4717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 4485 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-12-13 20:45:41,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7682 states. [2022-12-13 20:45:42,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7682 to 6826. [2022-12-13 20:45:42,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6826 states, 6825 states have (on average 1.2246153846153847) internal successors, (8358), 6825 states have internal predecessors, (8358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:42,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 8358 transitions. [2022-12-13 20:45:42,330 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 8358 transitions. Word has length 77 [2022-12-13 20:45:42,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:45:42,330 INFO L495 AbstractCegarLoop]: Abstraction has 6826 states and 8358 transitions. [2022-12-13 20:45:42,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:42,331 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 8358 transitions. [2022-12-13 20:45:42,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 20:45:42,332 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:45:42,332 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:42,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (20)] Ended with exit code 0 [2022-12-13 20:45:42,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:45:42,533 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:45:42,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:42,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1269946569, now seen corresponding path program 2 times [2022-12-13 20:45:42,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:45:42,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912658737] [2022-12-13 20:45:42,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:45:42,535 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 20:45:42,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:45:42,538 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:45:42,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (21)] Waiting until timeout for monitored process [2022-12-13 20:45:42,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:45:42,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:45:42,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-13 20:45:42,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:45:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:45:46,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:45:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:45:50,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:45:50,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912658737] [2022-12-13 20:45:50,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912658737] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:45:50,884 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:45:50,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-12-13 20:45:50,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066573443] [2022-12-13 20:45:50,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:45:50,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-13 20:45:50,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:45:50,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-13 20:45:50,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2267, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 20:45:50,885 INFO L87 Difference]: Start difference. First operand 6826 states and 8358 transitions. Second operand has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:47:19,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:47:19,293 INFO L93 Difference]: Finished difference Result 10719 states and 12903 transitions. [2022-12-13 20:47:19,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2022-12-13 20:47:19,294 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-12-13 20:47:19,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:47:19,303 INFO L225 Difference]: With dead ends: 10719 [2022-12-13 20:47:19,303 INFO L226 Difference]: Without dead ends: 9845 [2022-12-13 20:47:19,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24583 ImplicationChecksByTransitivity, 82.7s TimeCoverageRelationStatistics Valid=8391, Invalid=64779, Unknown=0, NotChecked=0, Total=73170 [2022-12-13 20:47:19,307 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 3034 mSDsluCounter, 10628 mSDsCounter, 0 mSdLazyCounter, 5848 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3034 SdHoareTripleChecker+Valid, 11093 SdHoareTripleChecker+Invalid, 6177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 5848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-12-13 20:47:19,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3034 Valid, 11093 Invalid, 6177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 5848 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-12-13 20:47:19,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9845 states. [2022-12-13 20:47:20,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9845 to 8035. [2022-12-13 20:47:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8035 states, 8034 states have (on average 1.2230520288772715) internal successors, (9826), 8034 states have internal predecessors, (9826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:47:20,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8035 states to 8035 states and 9826 transitions. [2022-12-13 20:47:20,307 INFO L78 Accepts]: Start accepts. Automaton has 8035 states and 9826 transitions. Word has length 77 [2022-12-13 20:47:20,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:47:20,307 INFO L495 AbstractCegarLoop]: Abstraction has 8035 states and 9826 transitions. [2022-12-13 20:47:20,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:47:20,308 INFO L276 IsEmpty]: Start isEmpty. Operand 8035 states and 9826 transitions. [2022-12-13 20:47:20,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 20:47:20,309 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:47:20,309 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:47:20,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (21)] Forceful destruction successful, exit code 0 [2022-12-13 20:47:20,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:47:20,510 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:47:20,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:47:20,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1690097737, now seen corresponding path program 3 times [2022-12-13 20:47:20,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:47:20,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909060107] [2022-12-13 20:47:20,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 20:47:20,513 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 20:47:20,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:47:20,516 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:47:20,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (22)] Waiting until timeout for monitored process [2022-12-13 20:47:20,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-13 20:47:20,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:47:20,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-13 20:47:20,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:47:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:47:24,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:47:29,229 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:47:29,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:47:29,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909060107] [2022-12-13 20:47:29,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909060107] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:47:29,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:47:29,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 49 [2022-12-13 20:47:29,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94069851] [2022-12-13 20:47:29,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:47:29,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-13 20:47:29,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:47:29,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-13 20:47:29,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2197, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 20:47:29,231 INFO L87 Difference]: Start difference. First operand 8035 states and 9826 transitions. Second operand has 49 states, 49 states have (on average 3.1020408163265305) internal successors, (152), 49 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:48:24,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:48:24,209 INFO L93 Difference]: Finished difference Result 12885 states and 15501 transitions. [2022-12-13 20:48:24,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-12-13 20:48:24,210 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.1020408163265305) internal successors, (152), 49 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-12-13 20:48:24,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:48:24,220 INFO L225 Difference]: With dead ends: 12885 [2022-12-13 20:48:24,220 INFO L226 Difference]: Without dead ends: 10798 [2022-12-13 20:48:24,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11337 ImplicationChecksByTransitivity, 50.0s TimeCoverageRelationStatistics Valid=5949, Invalid=34653, Unknown=0, NotChecked=0, Total=40602 [2022-12-13 20:48:24,224 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 2571 mSDsluCounter, 10467 mSDsCounter, 0 mSdLazyCounter, 5664 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2571 SdHoareTripleChecker+Valid, 10897 SdHoareTripleChecker+Invalid, 5985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 5664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-12-13 20:48:24,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2571 Valid, 10897 Invalid, 5985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 5664 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-12-13 20:48:24,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10798 states. [2022-12-13 20:48:25,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10798 to 8386. [2022-12-13 20:48:25,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8386 states, 8385 states have (on average 1.2212283840190816) internal successors, (10240), 8385 states have internal predecessors, (10240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:48:25,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8386 states to 8386 states and 10240 transitions. [2022-12-13 20:48:25,354 INFO L78 Accepts]: Start accepts. Automaton has 8386 states and 10240 transitions. Word has length 77 [2022-12-13 20:48:25,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:48:25,354 INFO L495 AbstractCegarLoop]: Abstraction has 8386 states and 10240 transitions. [2022-12-13 20:48:25,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.1020408163265305) internal successors, (152), 49 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:48:25,355 INFO L276 IsEmpty]: Start isEmpty. Operand 8386 states and 10240 transitions. [2022-12-13 20:48:25,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-13 20:48:25,357 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:48:25,357 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:48:25,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (22)] Forceful destruction successful, exit code 0 [2022-12-13 20:48:25,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:48:25,558 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:48:25,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:48:25,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1471420594, now seen corresponding path program 1 times [2022-12-13 20:48:25,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:48:25,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124822759] [2022-12-13 20:48:25,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:48:25,560 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 20:48:25,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:48:25,563 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:48:25,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (23)] Waiting until timeout for monitored process [2022-12-13 20:48:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:25,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 20:48:25,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:48:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 71 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:48:25,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:48:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 61 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:48:25,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:48:25,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124822759] [2022-12-13 20:48:25,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124822759] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:48:25,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:48:25,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-12-13 20:48:25,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729689843] [2022-12-13 20:48:25,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:48:25,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 20:48:25,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:48:25,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 20:48:25,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-12-13 20:48:25,923 INFO L87 Difference]: Start difference. First operand 8386 states and 10240 transitions. Second operand has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:48:29,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:48:29,755 INFO L93 Difference]: Finished difference Result 20230 states and 25071 transitions. [2022-12-13 20:48:29,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 20:48:29,756 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-12-13 20:48:29,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:48:29,768 INFO L225 Difference]: With dead ends: 20230 [2022-12-13 20:48:29,768 INFO L226 Difference]: Without dead ends: 11303 [2022-12-13 20:48:29,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=268, Invalid=1064, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 20:48:29,772 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 679 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 20:48:29,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 473 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 20:48:29,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11303 states. [2022-12-13 20:48:31,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11303 to 8743. [2022-12-13 20:48:31,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8743 states, 8742 states have (on average 1.1954930221917182) internal successors, (10451), 8742 states have internal predecessors, (10451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:48:31,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8743 states to 8743 states and 10451 transitions. [2022-12-13 20:48:31,365 INFO L78 Accepts]: Start accepts. Automaton has 8743 states and 10451 transitions. Word has length 78 [2022-12-13 20:48:31,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:48:31,365 INFO L495 AbstractCegarLoop]: Abstraction has 8743 states and 10451 transitions. [2022-12-13 20:48:31,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:48:31,365 INFO L276 IsEmpty]: Start isEmpty. Operand 8743 states and 10451 transitions. [2022-12-13 20:48:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 20:48:31,366 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:48:31,366 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:48:31,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (23)] Ended with exit code 0 [2022-12-13 20:48:31,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:48:31,567 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:48:31,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:48:31,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1794630633, now seen corresponding path program 1 times [2022-12-13 20:48:31,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:48:31,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104736548] [2022-12-13 20:48:31,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:48:31,568 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 20:48:31,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:48:31,569 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:48:31,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (24)] Waiting until timeout for monitored process [2022-12-13 20:48:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:31,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-13 20:48:31,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:48:35,455 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:48:35,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:48:41,021 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:48:41,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:48:41,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104736548] [2022-12-13 20:48:41,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104736548] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:48:41,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:48:41,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-12-13 20:48:41,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148527470] [2022-12-13 20:48:41,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:48:41,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-13 20:48:41,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:48:41,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-13 20:48:41,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2285, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 20:48:41,023 INFO L87 Difference]: Start difference. First operand 8743 states and 10451 transitions. Second operand has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:19,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:50:19,170 INFO L93 Difference]: Finished difference Result 15334 states and 18106 transitions. [2022-12-13 20:50:19,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2022-12-13 20:50:19,171 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-12-13 20:50:19,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:50:19,180 INFO L225 Difference]: With dead ends: 15334 [2022-12-13 20:50:19,180 INFO L226 Difference]: Without dead ends: 15133 [2022-12-13 20:50:19,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22124 ImplicationChecksByTransitivity, 88.9s TimeCoverageRelationStatistics Valid=6705, Invalid=60117, Unknown=0, NotChecked=0, Total=66822 [2022-12-13 20:50:19,184 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 2722 mSDsluCounter, 12956 mSDsCounter, 0 mSdLazyCounter, 7505 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 13419 SdHoareTripleChecker+Invalid, 7862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 7505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:50:19,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2722 Valid, 13419 Invalid, 7862 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [357 Valid, 7505 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2022-12-13 20:50:19,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15133 states. [2022-12-13 20:50:20,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15133 to 9631. [2022-12-13 20:50:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9631 states, 9630 states have (on average 1.187331256490135) internal successors, (11434), 9630 states have internal predecessors, (11434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:20,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9631 states to 9631 states and 11434 transitions. [2022-12-13 20:50:20,886 INFO L78 Accepts]: Start accepts. Automaton has 9631 states and 11434 transitions. Word has length 80 [2022-12-13 20:50:20,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:50:20,886 INFO L495 AbstractCegarLoop]: Abstraction has 9631 states and 11434 transitions. [2022-12-13 20:50:20,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:20,886 INFO L276 IsEmpty]: Start isEmpty. Operand 9631 states and 11434 transitions. [2022-12-13 20:50:20,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 20:50:20,888 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:50:20,888 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:50:20,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (24)] Ended with exit code 0 [2022-12-13 20:50:21,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:50:21,088 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:50:21,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:50:21,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1519845463, now seen corresponding path program 2 times [2022-12-13 20:50:21,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:50:21,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589080948] [2022-12-13 20:50:21,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:50:21,089 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 20:50:21,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:50:21,090 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:50:21,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (25)] Waiting until timeout for monitored process [2022-12-13 20:50:21,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:50:21,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:50:21,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-13 20:50:21,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:50:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:50:24,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:50:30,061 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:50:30,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:50:30,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589080948] [2022-12-13 20:50:30,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589080948] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:50:30,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:50:30,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-12-13 20:50:30,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459140789] [2022-12-13 20:50:30,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:50:30,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-13 20:50:30,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:50:30,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-13 20:50:30,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2289, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 20:50:30,062 INFO L87 Difference]: Start difference. First operand 9631 states and 11434 transitions. Second operand has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:52:19,196 INFO L93 Difference]: Finished difference Result 21978 states and 25714 transitions. [2022-12-13 20:52:19,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2022-12-13 20:52:19,197 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-12-13 20:52:19,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:52:19,209 INFO L225 Difference]: With dead ends: 21978 [2022-12-13 20:52:19,209 INFO L226 Difference]: Without dead ends: 19856 [2022-12-13 20:52:19,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24491 ImplicationChecksByTransitivity, 92.9s TimeCoverageRelationStatistics Valid=6285, Invalid=66345, Unknown=0, NotChecked=0, Total=72630 [2022-12-13 20:52:19,214 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 2479 mSDsluCounter, 18158 mSDsCounter, 0 mSdLazyCounter, 10579 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2479 SdHoareTripleChecker+Valid, 18850 SdHoareTripleChecker+Invalid, 10959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 10579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-12-13 20:52:19,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2479 Valid, 18850 Invalid, 10959 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [380 Valid, 10579 Invalid, 0 Unknown, 0 Unchecked, 16.6s Time] [2022-12-13 20:52:19,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19856 states. [2022-12-13 20:52:21,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19856 to 10505. [2022-12-13 20:52:21,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10505 states, 10504 states have (on average 1.1828827113480578) internal successors, (12425), 10504 states have internal predecessors, (12425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:21,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10505 states to 10505 states and 12425 transitions. [2022-12-13 20:52:21,422 INFO L78 Accepts]: Start accepts. Automaton has 10505 states and 12425 transitions. Word has length 80 [2022-12-13 20:52:21,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:52:21,422 INFO L495 AbstractCegarLoop]: Abstraction has 10505 states and 12425 transitions. [2022-12-13 20:52:21,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:21,422 INFO L276 IsEmpty]: Start isEmpty. Operand 10505 states and 12425 transitions. [2022-12-13 20:52:21,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 20:52:21,423 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:52:21,423 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:52:21,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (25)] Forceful destruction successful, exit code 0 [2022-12-13 20:52:21,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:52:21,624 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:52:21,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:52:21,626 INFO L85 PathProgramCache]: Analyzing trace with hash -825823845, now seen corresponding path program 3 times [2022-12-13 20:52:21,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:52:21,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808557237] [2022-12-13 20:52:21,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 20:52:21,628 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 20:52:21,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:52:21,631 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:52:21,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (26)] Waiting until timeout for monitored process [2022-12-13 20:52:21,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-13 20:52:21,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:52:21,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-13 20:52:21,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:52:25,569 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:52:25,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:52:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:52:30,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:52:30,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808557237] [2022-12-13 20:52:30,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808557237] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:52:30,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:52:30,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-12-13 20:52:30,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81613489] [2022-12-13 20:52:30,436 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:52:30,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-13 20:52:30,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:52:30,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-13 20:52:30,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2284, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 20:52:30,437 INFO L87 Difference]: Start difference. First operand 10505 states and 12425 transitions. Second operand has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:55:00,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:55:00,015 INFO L93 Difference]: Finished difference Result 32977 states and 38464 transitions. [2022-12-13 20:55:00,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 303 states. [2022-12-13 20:55:00,017 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-12-13 20:55:00,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:55:00,034 INFO L225 Difference]: With dead ends: 32977 [2022-12-13 20:55:00,034 INFO L226 Difference]: Without dead ends: 25518 [2022-12-13 20:55:00,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 346 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45267 ImplicationChecksByTransitivity, 132.2s TimeCoverageRelationStatistics Valid=14290, Invalid=106466, Unknown=0, NotChecked=0, Total=120756 [2022-12-13 20:55:00,043 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 3010 mSDsluCounter, 16686 mSDsCounter, 0 mSdLazyCounter, 10414 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3010 SdHoareTripleChecker+Valid, 17471 SdHoareTripleChecker+Invalid, 10914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 10414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:55:00,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3010 Valid, 17471 Invalid, 10914 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [500 Valid, 10414 Invalid, 0 Unknown, 0 Unchecked, 16.1s Time] [2022-12-13 20:55:00,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25518 states. [2022-12-13 20:55:02,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25518 to 15091. [2022-12-13 20:55:02,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15091 states, 15090 states have (on average 1.1809807819748177) internal successors, (17821), 15090 states have internal predecessors, (17821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:55:02,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15091 states to 15091 states and 17821 transitions. [2022-12-13 20:55:02,827 INFO L78 Accepts]: Start accepts. Automaton has 15091 states and 17821 transitions. Word has length 80 [2022-12-13 20:55:02,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:55:02,828 INFO L495 AbstractCegarLoop]: Abstraction has 15091 states and 17821 transitions. [2022-12-13 20:55:02,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:55:02,828 INFO L276 IsEmpty]: Start isEmpty. Operand 15091 states and 17821 transitions. [2022-12-13 20:55:02,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 20:55:02,829 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:55:02,829 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:55:02,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (26)] Ended with exit code 0 [2022-12-13 20:55:03,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:55:03,031 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:55:03,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:55:03,032 INFO L85 PathProgramCache]: Analyzing trace with hash -283754537, now seen corresponding path program 4 times [2022-12-13 20:55:03,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:55:03,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995819201] [2022-12-13 20:55:03,033 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 20:55:03,034 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 20:55:03,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:55:03,037 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:55:03,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (27)] Waiting until timeout for monitored process [2022-12-13 20:55:03,092 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 20:55:03,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:55:03,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-13 20:55:03,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:55:07,057 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:55:07,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:55:12,527 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:55:12,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:55:12,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995819201] [2022-12-13 20:55:12,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995819201] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:55:12,527 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:55:12,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-12-13 20:55:12,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397677654] [2022-12-13 20:55:12,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:55:12,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-13 20:55:12,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:55:12,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-13 20:55:12,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2295, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 20:55:12,528 INFO L87 Difference]: Start difference. First operand 15091 states and 17821 transitions. Second operand has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:56:41,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:56:41,118 INFO L93 Difference]: Finished difference Result 26878 states and 31296 transitions. [2022-12-13 20:56:41,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2022-12-13 20:56:41,119 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-12-13 20:56:41,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:56:41,135 INFO L225 Difference]: With dead ends: 26878 [2022-12-13 20:56:41,135 INFO L226 Difference]: Without dead ends: 24422 [2022-12-13 20:56:41,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16354 ImplicationChecksByTransitivity, 75.8s TimeCoverageRelationStatistics Valid=6495, Invalid=45717, Unknown=0, NotChecked=0, Total=52212 [2022-12-13 20:56:41,141 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 2117 mSDsluCounter, 14207 mSDsCounter, 0 mSdLazyCounter, 8385 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2117 SdHoareTripleChecker+Valid, 14785 SdHoareTripleChecker+Invalid, 8709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 8385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:56:41,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2117 Valid, 14785 Invalid, 8709 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [324 Valid, 8385 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2022-12-13 20:56:41,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24422 states. [2022-12-13 20:56:44,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24422 to 16180. [2022-12-13 20:56:44,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16180 states, 16179 states have (on average 1.1789356573335805) internal successors, (19074), 16179 states have internal predecessors, (19074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:56:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16180 states to 16180 states and 19074 transitions. [2022-12-13 20:56:44,245 INFO L78 Accepts]: Start accepts. Automaton has 16180 states and 19074 transitions. Word has length 80 [2022-12-13 20:56:44,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:56:44,245 INFO L495 AbstractCegarLoop]: Abstraction has 16180 states and 19074 transitions. [2022-12-13 20:56:44,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:56:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 16180 states and 19074 transitions. [2022-12-13 20:56:44,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-13 20:56:44,246 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:56:44,246 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:56:44,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (27)] Forceful destruction successful, exit code 0 [2022-12-13 20:56:44,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:56:44,447 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:56:44,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:56:44,448 INFO L85 PathProgramCache]: Analyzing trace with hash -582186698, now seen corresponding path program 1 times [2022-12-13 20:56:44,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:56:44,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940461193] [2022-12-13 20:56:44,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:56:44,450 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 20:56:44,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:56:44,453 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 20:56:44,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f696bc3-34e5-47d6-b84a-3f51c329b426/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 (28)] Waiting until timeout for monitored process [2022-12-13 20:56:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:56:44,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-13 20:56:44,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:56:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:56:48,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:56:54,115 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:56:54,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:56:54,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940461193] [2022-12-13 20:56:54,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940461193] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:56:54,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:56:54,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-12-13 20:56:54,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360900512] [2022-12-13 20:56:54,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:56:54,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-13 20:56:54,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:56:54,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-13 20:56:54,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2269, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 20:56:54,116 INFO L87 Difference]: Start difference. First operand 16180 states and 19074 transitions. Second operand has 50 states, 50 states have (on average 3.48) internal successors, (174), 50 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)