./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/egcd-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/egcd-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5cf588c7d7521936f2238a5a4b8ed55e91050a69daa6016b5b2b4a486ef1b9f8 --- 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-b5237d8 [2022-11-22 01:37:45,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:37:45,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:37:45,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:37:45,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:37:45,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:37:45,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:37:45,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:37:45,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:37:45,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:37:45,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:37:45,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:37:45,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:37:45,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:37:45,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:37:45,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:37:45,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:37:45,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:37:45,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:37:45,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:37:45,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:37:45,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:37:45,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:37:45,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:37:45,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:37:45,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:37:45,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:37:45,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:37:45,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:37:45,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:37:45,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:37:45,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:37:45,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:37:45,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:37:45,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:37:45,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:37:45,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:37:45,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:37:45,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:37:45,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:37:45,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:37:45,685 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 01:37:45,741 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:37:45,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:37:45,743 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:37:45,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:37:45,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:37:45,745 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:37:45,745 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:37:45,745 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:37:45,746 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:37:45,746 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:37:45,747 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:37:45,748 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:37:45,748 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:37:45,748 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:37:45,749 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:37:45,749 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:37:45,749 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:37:45,750 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:37:45,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:37:45,751 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:37:45,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:37:45,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:37:45,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:37:45,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:37:45,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:37:45,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:37:45,754 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:37:45,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:37:45,754 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:37:45,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:37:45,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:37:45,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:37:45,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:37:45,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:37:45,756 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:37:45,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:37:45,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:37:45,757 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:37:45,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:37:45,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:37:45,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:37:45,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cf588c7d7521936f2238a5a4b8ed55e91050a69daa6016b5b2b4a486ef1b9f8 [2022-11-22 01:37:46,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:37:46,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:37:46,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:37:46,182 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:37:46,182 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:37:46,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/nla-digbench/egcd-ll.c [2022-11-22 01:37:49,902 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:37:50,204 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:37:50,205 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/sv-benchmarks/c/nla-digbench/egcd-ll.c [2022-11-22 01:37:50,215 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/data/925398cb5/e076be6418a94d05979ebd7c29c63663/FLAGd3d4910d2 [2022-11-22 01:37:50,241 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/data/925398cb5/e076be6418a94d05979ebd7c29c63663 [2022-11-22 01:37:50,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:37:50,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:37:50,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:37:50,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:37:50,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:37:50,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:37:50" (1/1) ... [2022-11-22 01:37:50,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f90cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:50, skipping insertion in model container [2022-11-22 01:37:50,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:37:50" (1/1) ... [2022-11-22 01:37:50,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:37:50,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:37:50,475 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_27ec309e-6ce0-4926-b28c-eb8a63c57db0/sv-benchmarks/c/nla-digbench/egcd-ll.c[489,502] [2022-11-22 01:37:50,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:37:50,509 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:37:50,524 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_27ec309e-6ce0-4926-b28c-eb8a63c57db0/sv-benchmarks/c/nla-digbench/egcd-ll.c[489,502] [2022-11-22 01:37:50,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:37:50,550 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:37:50,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:50 WrapperNode [2022-11-22 01:37:50,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:37:50,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:37:50,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:37:50,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:37:50,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:50" (1/1) ... [2022-11-22 01:37:50,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:50" (1/1) ... [2022-11-22 01:37:50,592 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2022-11-22 01:37:50,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:37:50,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:37:50,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:37:50,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:37:50,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:50" (1/1) ... [2022-11-22 01:37:50,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:50" (1/1) ... [2022-11-22 01:37:50,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:50" (1/1) ... [2022-11-22 01:37:50,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:50" (1/1) ... [2022-11-22 01:37:50,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:50" (1/1) ... [2022-11-22 01:37:50,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:50" (1/1) ... [2022-11-22 01:37:50,618 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:50" (1/1) ... [2022-11-22 01:37:50,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:50" (1/1) ... [2022-11-22 01:37:50,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:37:50,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:37:50,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:37:50,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:37:50,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:50" (1/1) ... [2022-11-22 01:37:50,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:37:50,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:37:50,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:37:50,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:37:50,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:37:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 01:37:50,725 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 01:37:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:37:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:37:50,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:37:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-22 01:37:50,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-22 01:37:50,816 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:37:50,818 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:37:51,000 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:37:51,046 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:37:51,046 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:37:51,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:51 BoogieIcfgContainer [2022-11-22 01:37:51,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:37:51,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:37:51,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:37:51,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:37:51,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:37:50" (1/3) ... [2022-11-22 01:37:51,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d924e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:37:51, skipping insertion in model container [2022-11-22 01:37:51,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:50" (2/3) ... [2022-11-22 01:37:51,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d924e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:37:51, skipping insertion in model container [2022-11-22 01:37:51,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:51" (3/3) ... [2022-11-22 01:37:51,062 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll.c [2022-11-22 01:37:51,088 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:37:51,088 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:37:51,155 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:37:51,164 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=FINITE_AUTOMATA, 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;@5e8ca55c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:37:51,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:37:51,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-22 01:37:51,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 01:37:51,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:51,182 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:51,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:37:51,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:51,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1220168786, now seen corresponding path program 1 times [2022-11-22 01:37:51,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:51,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030918935] [2022-11-22 01:37:51,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:51,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:37:51,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:51,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030918935] [2022-11-22 01:37:51,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030918935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:37:51,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:37:51,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:37:51,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795943032] [2022-11-22 01:37:51,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:51,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 01:37:51,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:51,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 01:37:51,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:37:51,527 INFO L87 Difference]: Start difference. First operand has 23 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:37:51,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:51,615 INFO L93 Difference]: Finished difference Result 40 states and 64 transitions. [2022-11-22 01:37:51,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 01:37:51,619 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2022-11-22 01:37:51,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:51,654 INFO L225 Difference]: With dead ends: 40 [2022-11-22 01:37:51,655 INFO L226 Difference]: Without dead ends: 21 [2022-11-22 01:37:51,659 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 [2022-11-22 01:37:51,670 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:51,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:37:51,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-22 01:37:51,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-22 01:37:51,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-22 01:37:51,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2022-11-22 01:37:51,736 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 28 transitions. Word has length 13 [2022-11-22 01:37:51,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:51,739 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 28 transitions. [2022-11-22 01:37:51,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:37:51,740 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2022-11-22 01:37:51,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 01:37:51,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:51,743 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:51,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:37:51,745 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:37:51,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:51,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1285917523, now seen corresponding path program 1 times [2022-11-22 01:37:51,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:51,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261094264] [2022-11-22 01:37:51,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:51,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:51,798 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:37:51,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [984473323] [2022-11-22 01:37:51,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:51,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:51,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:37:51,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:37:51,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:37:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:51,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-22 01:37:51,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:37:52,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:37:52,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:37:52,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:52,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261094264] [2022-11-22 01:37:52,133 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:37:52,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984473323] [2022-11-22 01:37:52,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984473323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:37:52,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:37:52,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 01:37:52,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854058440] [2022-11-22 01:37:52,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:52,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:37:52,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:52,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:37:52,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:37:52,139 INFO L87 Difference]: Start difference. First operand 21 states and 28 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:37:52,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:52,318 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2022-11-22 01:37:52,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:37:52,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2022-11-22 01:37:52,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:52,320 INFO L225 Difference]: With dead ends: 36 [2022-11-22 01:37:52,320 INFO L226 Difference]: Without dead ends: 34 [2022-11-22 01:37:52,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:37:52,323 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:52,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 93 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:37:52,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-22 01:37:52,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-11-22 01:37:52,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-22 01:37:52,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 46 transitions. [2022-11-22 01:37:52,340 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 46 transitions. Word has length 13 [2022-11-22 01:37:52,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:52,341 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 46 transitions. [2022-11-22 01:37:52,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:37:52,342 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 46 transitions. [2022-11-22 01:37:52,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-22 01:37:52,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:52,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:52,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:37:52,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:52,544 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:37:52,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:52,545 INFO L85 PathProgramCache]: Analyzing trace with hash -2098202172, now seen corresponding path program 1 times [2022-11-22 01:37:52,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:52,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727356665] [2022-11-22 01:37:52,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:52,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:52,575 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:37:52,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943544857] [2022-11-22 01:37:52,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:52,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:52,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:37:52,591 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:37:52,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:37:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:52,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-22 01:37:52,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:37:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:37:52,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:37:52,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:52,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727356665] [2022-11-22 01:37:52,913 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:37:52,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943544857] [2022-11-22 01:37:52,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943544857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:37:52,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:37:52,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 01:37:52,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594781786] [2022-11-22 01:37:52,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:52,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:37:52,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:52,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:37:52,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:37:52,918 INFO L87 Difference]: Start difference. First operand 33 states and 46 transitions. Second operand has 9 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 01:37:53,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:53,121 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2022-11-22 01:37:53,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 01:37:53,122 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 18 [2022-11-22 01:37:53,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:53,124 INFO L225 Difference]: With dead ends: 40 [2022-11-22 01:37:53,124 INFO L226 Difference]: Without dead ends: 38 [2022-11-22 01:37:53,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-22 01:37:53,126 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 24 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:53,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 91 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:37:53,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-22 01:37:53,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-11-22 01:37:53,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-22 01:37:53,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2022-11-22 01:37:53,144 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 18 [2022-11-22 01:37:53,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:53,145 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2022-11-22 01:37:53,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 01:37:53,145 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2022-11-22 01:37:53,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-22 01:37:53,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:53,147 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:53,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:37:53,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:53,354 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:37:53,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:53,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1147282125, now seen corresponding path program 1 times [2022-11-22 01:37:53,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:53,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739258159] [2022-11-22 01:37:53,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:53,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:53,374 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:37:53,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377271796] [2022-11-22 01:37:53,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:53,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:53,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:37:53,377 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:37:53,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:37:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:53,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-22 01:37:53,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:37:53,828 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:37:53,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:37:54,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:54,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739258159] [2022-11-22 01:37:54,059 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:37:54,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377271796] [2022-11-22 01:37:54,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377271796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:54,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1428424016] [2022-11-22 01:37:54,087 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-22 01:37:54,087 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:37:54,092 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:37:54,100 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:37:54,100 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:37:54,771 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-22 01:37:54,791 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2022-11-22 01:37:54,853 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:37:56,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1428424016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:37:56,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:37:56,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 18 [2022-11-22 01:37:56,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596658185] [2022-11-22 01:37:56,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:56,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 01:37:56,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:56,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 01:37:56,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:37:56,297 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand has 10 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 5 states have internal predecessors, (9), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-22 01:37:56,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:56,617 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2022-11-22 01:37:56,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:37:56,621 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 5 states have internal predecessors, (9), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 23 [2022-11-22 01:37:56,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:56,623 INFO L225 Difference]: With dead ends: 44 [2022-11-22 01:37:56,625 INFO L226 Difference]: Without dead ends: 40 [2022-11-22 01:37:56,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:37:56,627 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:56,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 37 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:37:56,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-22 01:37:56,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-22 01:37:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:37:56,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2022-11-22 01:37:56,672 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 23 [2022-11-22 01:37:56,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:56,673 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2022-11-22 01:37:56,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 5 states have internal predecessors, (9), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-22 01:37:56,673 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2022-11-22 01:37:56,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-22 01:37:56,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:56,674 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:56,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:37:56,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:56,875 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:37:56,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:56,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1749456426, now seen corresponding path program 1 times [2022-11-22 01:37:56,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:56,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957574136] [2022-11-22 01:37:56,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:56,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:56,902 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:37:56,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866933619] [2022-11-22 01:37:56,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:56,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:56,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:37:56,908 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:37:56,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:37:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:56,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 01:37:56,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:37:57,015 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 01:37:57,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:37:57,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:57,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957574136] [2022-11-22 01:37:57,017 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:37:57,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866933619] [2022-11-22 01:37:57,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866933619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:37:57,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:37:57,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:37:57,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616155720] [2022-11-22 01:37:57,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:57,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:37:57,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:57,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:37:57,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:37:57,021 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-22 01:37:57,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:57,099 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2022-11-22 01:37:57,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:37:57,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 29 [2022-11-22 01:37:57,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:57,101 INFO L225 Difference]: With dead ends: 46 [2022-11-22 01:37:57,101 INFO L226 Difference]: Without dead ends: 44 [2022-11-22 01:37:57,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:37:57,103 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:57,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 75 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:37:57,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-22 01:37:57,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-22 01:37:57,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:37:57,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2022-11-22 01:37:57,125 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 29 [2022-11-22 01:37:57,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:57,125 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2022-11-22 01:37:57,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-22 01:37:57,126 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2022-11-22 01:37:57,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-22 01:37:57,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:57,127 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:57,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:37:57,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:57,334 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:37:57,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:57,335 INFO L85 PathProgramCache]: Analyzing trace with hash 94602887, now seen corresponding path program 1 times [2022-11-22 01:37:57,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:57,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920103492] [2022-11-22 01:37:57,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:57,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:57,348 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:37:57,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430227352] [2022-11-22 01:37:57,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:57,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:57,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:37:57,351 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:37:57,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:37:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:57,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-22 01:37:57,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:37:57,714 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 01:37:57,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:37:58,007 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-22 01:37:58,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:58,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920103492] [2022-11-22 01:37:58,010 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:37:58,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430227352] [2022-11-22 01:37:58,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430227352] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:58,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:37:58,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2022-11-22 01:37:58,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970123034] [2022-11-22 01:37:58,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:58,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:37:58,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:58,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:37:58,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-22 01:37:58,015 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 01:37:58,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:58,114 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-11-22 01:37:58,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:37:58,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 30 [2022-11-22 01:37:58,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:58,118 INFO L225 Difference]: With dead ends: 50 [2022-11-22 01:37:58,118 INFO L226 Difference]: Without dead ends: 48 [2022-11-22 01:37:58,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-22 01:37:58,124 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:58,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 57 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:37:58,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-22 01:37:58,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-11-22 01:37:58,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 28 states have internal predecessors, (29), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:37:58,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2022-11-22 01:37:58,163 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 30 [2022-11-22 01:37:58,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:58,163 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2022-11-22 01:37:58,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 01:37:58,164 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2022-11-22 01:37:58,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-22 01:37:58,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:58,165 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:58,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 01:37:58,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-22 01:37:58,372 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:37:58,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:58,373 INFO L85 PathProgramCache]: Analyzing trace with hash 655721895, now seen corresponding path program 1 times [2022-11-22 01:37:58,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:58,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752767412] [2022-11-22 01:37:58,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:58,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:58,398 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:37:58,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043746938] [2022-11-22 01:37:58,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:58,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:58,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:37:58,412 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:37:58,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 01:37:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:58,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-22 01:37:58,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:37:58,600 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 01:37:58,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:37:58,785 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 01:37:58,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:58,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752767412] [2022-11-22 01:37:58,786 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:37:58,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043746938] [2022-11-22 01:37:58,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043746938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:37:58,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1463632992] [2022-11-22 01:37:58,790 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-22 01:37:58,790 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:37:58,791 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:37:58,791 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:37:58,792 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:37:59,420 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-22 01:37:59,434 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2022-11-22 01:37:59,468 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:38:01,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1463632992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:38:01,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:38:01,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 8] total 21 [2022-11-22 01:38:01,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606987851] [2022-11-22 01:38:01,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:01,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 01:38:01,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:01,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 01:38:01,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:38:01,286 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 11 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 01:38:01,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:01,656 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2022-11-22 01:38:01,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 01:38:01,657 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 34 [2022-11-22 01:38:01,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:01,658 INFO L225 Difference]: With dead ends: 58 [2022-11-22 01:38:01,658 INFO L226 Difference]: Without dead ends: 46 [2022-11-22 01:38:01,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 69 SyntacticMatches, 12 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:38:01,659 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 18 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:01,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 40 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:38:01,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-22 01:38:01,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-22 01:38:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-22 01:38:01,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2022-11-22 01:38:01,691 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 34 [2022-11-22 01:38:01,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:01,692 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2022-11-22 01:38:01,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 01:38:01,692 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2022-11-22 01:38:01,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-22 01:38:01,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:01,696 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:01,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-22 01:38:01,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:01,903 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:01,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:01,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1398144982, now seen corresponding path program 2 times [2022-11-22 01:38:01,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:01,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329331102] [2022-11-22 01:38:01,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:01,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:01,915 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:38:01,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634846824] [2022-11-22 01:38:01,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:38:01,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:01,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:38:01,918 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:38:01,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 01:38:01,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 01:38:01,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:38:01,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-22 01:38:01,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:38:02,339 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-22 01:38:02,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:38:02,647 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-22 01:38:02,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:02,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329331102] [2022-11-22 01:38:02,648 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:38:02,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634846824] [2022-11-22 01:38:02,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634846824] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:38:02,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1006000208] [2022-11-22 01:38:02,651 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-22 01:38:02,651 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:38:02,652 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:38:02,652 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:38:02,653 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:38:05,926 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-22 01:38:05,932 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2022-11-22 01:38:05,960 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:38:07,115 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1845#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:38:07,115 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:38:07,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:38:07,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2022-11-22 01:38:07,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864596948] [2022-11-22 01:38:07,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:38:07,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 01:38:07,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:07,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 01:38:07,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-11-22 01:38:07,118 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-22 01:38:09,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:09,205 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2022-11-22 01:38:09,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 01:38:09,206 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 35 [2022-11-22 01:38:09,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:09,207 INFO L225 Difference]: With dead ends: 70 [2022-11-22 01:38:09,208 INFO L226 Difference]: Without dead ends: 68 [2022-11-22 01:38:09,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2022-11-22 01:38:09,209 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 22 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:09,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 144 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 01:38:09,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-22 01:38:09,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2022-11-22 01:38:09,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 32 states have (on average 1.09375) internal successors, (35), 34 states have internal predecessors, (35), 17 states have call successors, (17), 8 states have call predecessors, (17), 8 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-22 01:38:09,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2022-11-22 01:38:09,238 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 35 [2022-11-22 01:38:09,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:09,239 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2022-11-22 01:38:09,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-22 01:38:09,239 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2022-11-22 01:38:09,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-22 01:38:09,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:09,241 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:09,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 01:38:09,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:09,448 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:09,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:09,448 INFO L85 PathProgramCache]: Analyzing trace with hash 168438823, now seen corresponding path program 3 times [2022-11-22 01:38:09,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:09,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420895134] [2022-11-22 01:38:09,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:09,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:09,460 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:38:09,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100432274] [2022-11-22 01:38:09,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:38:09,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:09,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:38:09,462 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:38:09,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 01:38:09,546 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:38:09,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:38:09,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-22 01:38:09,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:38:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-22 01:38:10,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:38:11,285 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 01:38:11,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:11,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420895134] [2022-11-22 01:38:11,286 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:38:11,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100432274] [2022-11-22 01:38:11,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100432274] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:38:11,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [794394155] [2022-11-22 01:38:11,288 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-22 01:38:11,289 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:38:11,289 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:38:11,289 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:38:11,289 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:38:14,374 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-22 01:38:14,379 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2022-11-22 01:38:14,408 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:38:16,085 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2311#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:38:16,085 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:38:16,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:38:16,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2022-11-22 01:38:16,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185507428] [2022-11-22 01:38:16,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:38:16,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 01:38:16,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:16,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 01:38:16,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2022-11-22 01:38:16,088 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 17 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 12 states have internal predecessors, (24), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-22 01:38:17,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:17,491 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2022-11-22 01:38:17,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 01:38:17,492 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 12 states have internal predecessors, (24), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) Word has length 40 [2022-11-22 01:38:17,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:17,495 INFO L225 Difference]: With dead ends: 72 [2022-11-22 01:38:17,495 INFO L226 Difference]: Without dead ends: 66 [2022-11-22 01:38:17,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=160, Invalid=1030, Unknown=0, NotChecked=0, Total=1190 [2022-11-22 01:38:17,497 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 39 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:17,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 49 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 01:38:17,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-22 01:38:17,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2022-11-22 01:38:17,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 40 states have internal predecessors, (41), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-22 01:38:17,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2022-11-22 01:38:17,524 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 40 [2022-11-22 01:38:17,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:17,525 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2022-11-22 01:38:17,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 12 states have internal predecessors, (24), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-22 01:38:17,525 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2022-11-22 01:38:17,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-22 01:38:17,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:17,527 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:17,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 01:38:17,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:17,738 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:17,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:17,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1145962483, now seen corresponding path program 1 times [2022-11-22 01:38:17,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:17,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418138580] [2022-11-22 01:38:17,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:17,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:17,749 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:38:17,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772847678] [2022-11-22 01:38:17,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:17,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:17,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:38:17,763 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:38:17,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 01:38:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:17,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-22 01:38:17,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:38:17,936 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-22 01:38:17,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:38:18,113 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-22 01:38:18,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:18,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418138580] [2022-11-22 01:38:18,114 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:38:18,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772847678] [2022-11-22 01:38:18,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772847678] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:38:18,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [319032464] [2022-11-22 01:38:18,119 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-22 01:38:18,119 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:38:18,120 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:38:18,120 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:38:18,120 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:38:21,153 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-22 01:38:21,158 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2022-11-22 01:38:21,185 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:38:23,306 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2847#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:38:23,306 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:38:23,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:38:23,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2022-11-22 01:38:23,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126392930] [2022-11-22 01:38:23,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:38:23,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 01:38:23,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:23,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 01:38:23,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2022-11-22 01:38:23,309 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-22 01:38:23,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:23,544 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2022-11-22 01:38:23,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:38:23,545 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 51 [2022-11-22 01:38:23,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:23,551 INFO L225 Difference]: With dead ends: 70 [2022-11-22 01:38:23,554 INFO L226 Difference]: Without dead ends: 58 [2022-11-22 01:38:23,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2022-11-22 01:38:23,556 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:23,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 46 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:38:23,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-22 01:38:23,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-22 01:38:23,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 36 states have internal predecessors, (36), 13 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-22 01:38:23,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2022-11-22 01:38:23,593 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 51 [2022-11-22 01:38:23,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:23,594 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2022-11-22 01:38:23,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-22 01:38:23,595 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2022-11-22 01:38:23,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-22 01:38:23,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:23,608 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:23,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 01:38:23,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 01:38:23,821 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:23,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:23,822 INFO L85 PathProgramCache]: Analyzing trace with hash -172900502, now seen corresponding path program 4 times [2022-11-22 01:38:23,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:23,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636781515] [2022-11-22 01:38:23,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:23,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:23,850 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:38:23,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194739345] [2022-11-22 01:38:23,859 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 01:38:23,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:23,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:38:23,862 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:38:23,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 01:38:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:24,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-22 01:38:24,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:38:28,560 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 79 proven. 41 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-11-22 01:38:28,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:38:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 93 proven. 3 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-22 01:38:29,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:29,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636781515] [2022-11-22 01:38:29,616 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:38:29,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194739345] [2022-11-22 01:38:29,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194739345] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:38:29,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [896775139] [2022-11-22 01:38:29,618 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-22 01:38:29,619 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:38:29,619 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:38:29,619 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:38:29,619 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:38:32,414 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-22 01:38:32,419 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2022-11-22 01:38:32,446 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:38:34,173 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3475#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:38:34,173 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:38:34,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:38:34,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 19 [2022-11-22 01:38:34,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363919303] [2022-11-22 01:38:34,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:38:34,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-22 01:38:34,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:34,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-22 01:38:34,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2022-11-22 01:38:34,175 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 19 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 13 states have internal predecessors, (29), 9 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 9 states have call predecessors, (19), 7 states have call successors, (19) [2022-11-22 01:38:39,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 01:38:40,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 01:38:40,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:40,783 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2022-11-22 01:38:40,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 01:38:40,784 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 13 states have internal predecessors, (29), 9 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 9 states have call predecessors, (19), 7 states have call successors, (19) Word has length 69 [2022-11-22 01:38:40,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:40,784 INFO L225 Difference]: With dead ends: 75 [2022-11-22 01:38:40,785 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 01:38:40,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 170 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=183, Invalid=1149, Unknown=0, NotChecked=0, Total=1332 [2022-11-22 01:38:40,787 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 45 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 111 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:40,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 58 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 266 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-22 01:38:40,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 01:38:40,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 01:38:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:40,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 01:38:40,789 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2022-11-22 01:38:40,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:40,789 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 01:38:40,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 13 states have internal predecessors, (29), 9 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 9 states have call predecessors, (19), 7 states have call successors, (19) [2022-11-22 01:38:40,790 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 01:38:40,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 01:38:40,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 01:38:40,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-22 01:38:40,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-22 01:38:40,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 01:39:01,527 WARN L233 SmtUtils]: Spent 7.05s on a formula simplification. DAG size of input: 104 DAG size of output: 72 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-22 01:39:04,958 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 01:39:04,958 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 50) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse2 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse2 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (= (select .cse2 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-22 01:39:04,959 INFO L895 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-22 01:39:04,959 INFO L895 garLoopResultBuilder]: At program point L23-1(line 23) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-22 01:39:04,959 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse18 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (<= |ULTIMATE.start_main_~x~0#1| 2147483647)) (.cse3 (= 2 (select |#length| 1))) (.cse6 (= (select |#valid| 3) 1)) (.cse7 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse8 (= (select |#valid| 1) 1)) (.cse9 (= (select |#valid| 0) 0)) (.cse10 (= (select |#valid| 2) 1)) (.cse11 (= |#NULL.offset| 0)) (.cse12 (= (select .cse18 0) 48)) (.cse13 (<= |ULTIMATE.start_main_~y~0#1| 2147483647)) (.cse14 (= 10 (select |#length| 2))) (.cse15 (= (select .cse18 1) 0)) (.cse16 (< 0 |#StackHeapBarrier|)) (.cse17 (= |#NULL.base| 0))) (or (let ((.cse4 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse5 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse0 (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) .cse1 .cse2 .cse3 (= (+ .cse4 .cse5) |ULTIMATE.start_main_~b~0#1|) .cse6 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (+ |ULTIMATE.start_main_~a~0#1| .cse4 .cse5)) .cse7 .cse8 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 .cse6 (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse7 .cse8 .cse9 .cse10 .cse11 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse12 .cse13 .cse14 .cse15 (= |ULTIMATE.start_main_~s~0#1| 1) .cse16 .cse17)))) [2022-11-22 01:39:04,959 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse2 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse2 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (= (select .cse2 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-22 01:39:04,959 INFO L899 garLoopResultBuilder]: For program point L36(lines 33 50) no Hoare annotation was computed. [2022-11-22 01:39:04,960 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-22 01:39:04,960 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-22 01:39:04,960 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 01:39:04,961 INFO L899 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2022-11-22 01:39:04,961 INFO L902 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: true [2022-11-22 01:39:04,961 INFO L895 garLoopResultBuilder]: At program point L53(line 53) the Hoare annotation is: (let ((.cse18 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (<= |ULTIMATE.start_main_~x~0#1| 2147483647)) (.cse3 (= 2 (select |#length| 1))) (.cse6 (= (select |#valid| 3) 1)) (.cse7 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse8 (= (select |#valid| 1) 1)) (.cse9 (= (select |#valid| 0) 0)) (.cse10 (= (select |#valid| 2) 1)) (.cse11 (= |#NULL.offset| 0)) (.cse12 (= (select .cse18 0) 48)) (.cse13 (<= |ULTIMATE.start_main_~y~0#1| 2147483647)) (.cse14 (= 10 (select |#length| 2))) (.cse15 (= (select .cse18 1) 0)) (.cse16 (< 0 |#StackHeapBarrier|)) (.cse17 (= |#NULL.base| 0))) (or (let ((.cse4 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse5 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse0 (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) .cse1 .cse2 .cse3 (= (+ .cse4 .cse5) |ULTIMATE.start_main_~b~0#1|) .cse6 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (+ |ULTIMATE.start_main_~a~0#1| .cse4 .cse5)) .cse7 .cse8 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 .cse6 (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse7 .cse8 .cse9 .cse10 .cse11 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse12 .cse13 .cse14 .cse15 (= |ULTIMATE.start_main_~s~0#1| 1) .cse16 .cse17)))) [2022-11-22 01:39:04,962 INFO L895 garLoopResultBuilder]: At program point L41-2(lines 33 50) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-22 01:39:04,962 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-22 01:39:04,962 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-11-22 01:39:04,962 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-11-22 01:39:04,962 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-11-22 01:39:04,962 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-11-22 01:39:04,963 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-11-22 01:39:04,963 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-11-22 01:39:04,963 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-11-22 01:39:04,963 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-11-22 01:39:04,967 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:04,970 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:39:04,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:39:04 BoogieIcfgContainer [2022-11-22 01:39:04,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:39:04,997 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:39:04,998 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:39:04,998 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:39:04,999 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:51" (3/4) ... [2022-11-22 01:39:05,003 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 01:39:05,010 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-22 01:39:05,010 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-22 01:39:05,017 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-22 01:39:05,018 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-22 01:39:05,018 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-22 01:39:05,018 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 01:39:05,070 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 01:39:05,071 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:39:05,071 INFO L158 Benchmark]: Toolchain (without parser) took 74824.68ms. Allocated memory was 155.2MB in the beginning and 478.2MB in the end (delta: 323.0MB). Free memory was 111.0MB in the beginning and 387.1MB in the end (delta: -276.1MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. [2022-11-22 01:39:05,072 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 155.2MB. Free memory is still 98.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:39:05,076 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.60ms. Allocated memory is still 155.2MB. Free memory was 111.0MB in the beginning and 100.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 01:39:05,076 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.74ms. Allocated memory is still 155.2MB. Free memory was 100.5MB in the beginning and 99.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:39:05,077 INFO L158 Benchmark]: Boogie Preprocessor took 27.74ms. Allocated memory is still 155.2MB. Free memory was 99.0MB in the beginning and 97.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:39:05,078 INFO L158 Benchmark]: RCFGBuilder took 427.72ms. Allocated memory is still 155.2MB. Free memory was 97.5MB in the beginning and 84.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-22 01:39:05,078 INFO L158 Benchmark]: TraceAbstraction took 73943.14ms. Allocated memory was 155.2MB in the beginning and 478.2MB in the end (delta: 323.0MB). Free memory was 84.3MB in the beginning and 389.2MB in the end (delta: -304.9MB). Peak memory consumption was 247.3MB. Max. memory is 16.1GB. [2022-11-22 01:39:05,079 INFO L158 Benchmark]: Witness Printer took 73.72ms. Allocated memory is still 478.2MB. Free memory was 389.2MB in the beginning and 387.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:39:05,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 155.2MB. Free memory is still 98.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.60ms. Allocated memory is still 155.2MB. Free memory was 111.0MB in the beginning and 100.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.74ms. Allocated memory is still 155.2MB. Free memory was 100.5MB in the beginning and 99.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.74ms. Allocated memory is still 155.2MB. Free memory was 99.0MB in the beginning and 97.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 427.72ms. Allocated memory is still 155.2MB. Free memory was 97.5MB in the beginning and 84.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 73943.14ms. Allocated memory was 155.2MB in the beginning and 478.2MB in the end (delta: 323.0MB). Free memory was 84.3MB in the beginning and 389.2MB in the end (delta: -304.9MB). Peak memory consumption was 247.3MB. Max. memory is 16.1GB. * Witness Printer took 73.72ms. Allocated memory is still 478.2MB. Free memory was 389.2MB in the beginning and 387.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 73.8s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 11.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 24.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 255 SdHoareTripleChecker+Valid, 7.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 202 mSDsluCounter, 716 SdHoareTripleChecker+Invalid, 7.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 469 mSDsCounter, 305 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1394 IncrementalHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 305 mSolverCounterUnsat, 247 mSDtfsCounter, 1394 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 872 GetRequests, 655 SyntacticMatches, 34 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1515 ImplicationChecksByTransitivity, 16.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=9, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 14 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 46 PreInvPairs, 79 NumberOfFragments, 1159 HoareAnnotationTreeSize, 46 FomulaSimplifications, 720 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 13 FomulaSimplificationsInter, 8775 FormulaSimplificationTreeSizeReductionInter, 23.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 355 NumberOfCodeBlocks, 344 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 597 ConstructedInterpolants, 0 QuantifiedInterpolants, 4453 SizeOfPredicates, 54 NumberOfNonLiveVariables, 1003 ConjunctsInSsa, 238 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 895/998 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: OVERALL_TIME: 1.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 39, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 25, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 32, TOOLS_POST_CALL_TIME: 0.6s, TOOLS_POST_RETURN_APPLICATIONS: 20, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 77, TOOLS_QUANTIFIERELIM_TIME: 0.8s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 102, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 38, DOMAIN_JOIN_TIME: 0.4s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 39, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 20, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 381, DAG_COMPRESSION_RETAINED_NODES: 110, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((((((((((((((((unknown-#length-unknown[3] == 12 && p * s == q * r + 1) && 1 <= y) && x <= 2147483647) && 2 == unknown-#length-unknown[1]) && s * y + q * x == b) && \valid[3] == 1) && 1 <= x) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && y <= 2147483647) && r * y + p * x == a) && 10 == unknown-#length-unknown[2]) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-22 01:39:05,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27ec309e-6ce0-4926-b28c-eb8a63c57db0/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE