./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur --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 64bit --witnessprinter.graph.data.programhash 2b04c290f1a7102f69086810812946480d0557325a865f39f1fc1d9d1f1627d8 --- 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-38b53e6 [2022-11-25 23:57:26,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:57:26,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:57:26,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:57:26,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:57:26,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:57:26,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:57:26,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:57:26,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:57:26,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:57:26,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:57:26,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:57:26,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:57:26,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:57:26,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:57:26,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:57:26,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:57:26,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:57:26,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:57:26,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:57:26,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:57:26,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:57:26,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:57:26,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:57:26,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:57:26,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:57:26,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:57:26,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:57:26,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:57:26,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:57:26,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:57:26,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:57:26,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:57:26,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:57:26,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:57:26,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:57:26,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:57:26,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:57:26,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:57:26,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:57:26,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:57:26,823 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 23:57:26,871 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:57:26,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:57:26,876 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:57:26,876 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:57:26,877 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:57:26,878 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:57:26,878 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:57:26,878 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:57:26,878 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:57:26,879 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:57:26,880 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:57:26,880 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:57:26,881 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:57:26,881 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:57:26,881 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:57:26,882 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:57:26,882 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:57:26,882 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:57:26,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:57:26,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:57:26,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:57:26,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:57:26,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:57:26,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:57:26,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:57:26,885 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:57:26,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:57:26,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:57:26,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:57:26,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:57:26,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:57:26,888 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:57:26,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:57:26,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:57:26,888 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:57:26,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:57:26,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:57:26,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:57:26,891 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_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b04c290f1a7102f69086810812946480d0557325a865f39f1fc1d9d1f1627d8 [2022-11-25 23:57:27,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:57:27,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:57:27,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:57:27,317 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:57:27,318 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:57:27,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c [2022-11-25 23:57:30,777 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:57:31,006 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:57:31,007 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c [2022-11-25 23:57:31,015 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/data/eff651a44/976501ba1ae045998ae1781ec02cda30/FLAG9951612e0 [2022-11-25 23:57:31,032 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/data/eff651a44/976501ba1ae045998ae1781ec02cda30 [2022-11-25 23:57:31,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:57:31,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:57:31,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:57:31,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:57:31,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:57:31,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:57:31" (1/1) ... [2022-11-25 23:57:31,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df9704c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:31, skipping insertion in model container [2022-11-25 23:57:31,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:57:31" (1/1) ... [2022-11-25 23:57:31,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:57:31,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:57:31,272 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_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c[1107,1120] [2022-11-25 23:57:31,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:57:31,354 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:57:31,364 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_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c[1107,1120] [2022-11-25 23:57:31,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:57:31,403 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:57:31,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:31 WrapperNode [2022-11-25 23:57:31,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:57:31,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:57:31,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:57:31,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:57:31,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:31" (1/1) ... [2022-11-25 23:57:31,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:31" (1/1) ... [2022-11-25 23:57:31,451 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2022-11-25 23:57:31,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:57:31,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:57:31,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:57:31,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:57:31,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:31" (1/1) ... [2022-11-25 23:57:31,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:31" (1/1) ... [2022-11-25 23:57:31,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:31" (1/1) ... [2022-11-25 23:57:31,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:31" (1/1) ... [2022-11-25 23:57:31,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:31" (1/1) ... [2022-11-25 23:57:31,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:31" (1/1) ... [2022-11-25 23:57:31,481 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:31" (1/1) ... [2022-11-25 23:57:31,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:31" (1/1) ... [2022-11-25 23:57:31,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:57:31,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:57:31,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:57:31,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:57:31,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:31" (1/1) ... [2022-11-25 23:57:31,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:57:31,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:57:31,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:57:31,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:57:31,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:57:31,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:57:31,715 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:57:31,719 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:57:31,998 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:57:32,024 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:57:32,024 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:57:32,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:57:32 BoogieIcfgContainer [2022-11-25 23:57:32,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:57:32,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:57:32,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:57:32,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:57:32,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:57:31" (1/3) ... [2022-11-25 23:57:32,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416b30f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:57:32, skipping insertion in model container [2022-11-25 23:57:32,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:31" (2/3) ... [2022-11-25 23:57:32,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416b30f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:57:32, skipping insertion in model container [2022-11-25 23:57:32,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:57:32" (3/3) ... [2022-11-25 23:57:32,042 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.dyn_partition.c [2022-11-25 23:57:32,067 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:57:32,068 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:57:32,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:57:32,136 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;@268b4acd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:57:32,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:57:32,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-11-25 23:57:32,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:57:32,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:57:32,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:57:32,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:57:32,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:57:32,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1797488, now seen corresponding path program 1 times [2022-11-25 23:57:32,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:57:32,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6993413] [2022-11-25 23:57:32,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:57:32,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:57:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:57:32,352 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:57:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:57:32,429 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:57:32,431 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:57:32,433 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 23:57:32,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:57:32,441 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 23:57:32,447 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:57:32,471 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-25 23:57:32,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:57:32 BoogieIcfgContainer [2022-11-25 23:57:32,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:57:32,482 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:57:32,482 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:57:32,482 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:57:32,483 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:57:32" (3/4) ... [2022-11-25 23:57:32,487 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:57:32,488 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:57:32,489 INFO L158 Benchmark]: Toolchain (without parser) took 1452.82ms. Allocated memory is still 144.7MB. Free memory was 106.1MB in the beginning and 75.4MB in the end (delta: 30.7MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2022-11-25 23:57:32,490 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 111.1MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:57:32,491 INFO L158 Benchmark]: CACSL2BoogieTranslator took 366.22ms. Allocated memory is still 144.7MB. Free memory was 106.1MB in the beginning and 114.5MB in the end (delta: -8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 23:57:32,492 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.54ms. Allocated memory is still 144.7MB. Free memory was 114.5MB in the beginning and 112.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:57:32,492 INFO L158 Benchmark]: Boogie Preprocessor took 33.33ms. Allocated memory is still 144.7MB. Free memory was 112.4MB in the beginning and 111.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:57:32,493 INFO L158 Benchmark]: RCFGBuilder took 541.67ms. Allocated memory is still 144.7MB. Free memory was 111.0MB in the beginning and 93.5MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 23:57:32,494 INFO L158 Benchmark]: TraceAbstraction took 450.03ms. Allocated memory is still 144.7MB. Free memory was 92.8MB in the beginning and 75.4MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 23:57:32,495 INFO L158 Benchmark]: Witness Printer took 6.22ms. Allocated memory is still 144.7MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:57:32,498 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 111.1MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 366.22ms. Allocated memory is still 144.7MB. Free memory was 106.1MB in the beginning and 114.5MB in the end (delta: -8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.54ms. Allocated memory is still 144.7MB. Free memory was 114.5MB in the beginning and 112.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.33ms. Allocated memory is still 144.7MB. Free memory was 112.4MB in the beginning and 111.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 541.67ms. Allocated memory is still 144.7MB. Free memory was 111.0MB in the beginning and 93.5MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 450.03ms. Allocated memory is still 144.7MB. Free memory was 92.8MB in the beginning and 75.4MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 6.22ms. Allocated memory is still 144.7MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 65, overapproximation of bitwiseAnd at line 68. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 3); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (3 - 1); [L31] const SORT_23 mask_SORT_23 = (SORT_23)-1 >> (sizeof(SORT_23) * 8 - 32); [L32] const SORT_23 msb_SORT_23 = (SORT_23)1 << (32 - 1); [L34] const SORT_4 var_5 = 0; [L35] const SORT_1 var_13 = 1; [L36] const SORT_1 var_17 = 0; [L37] const SORT_23 var_25 = 1; [L39] SORT_1 input_2; [L40] SORT_1 input_3; [L42] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L43] SORT_4 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L44] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L45] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L47] SORT_4 init_7_arg_1 = var_5; [L48] state_6 = init_7_arg_1 [L49] SORT_4 init_9_arg_1 = var_5; [L50] state_8 = init_9_arg_1 [L51] SORT_1 init_19_arg_1 = var_17; [L52] state_18 = init_19_arg_1 [L53] SORT_1 init_21_arg_1 = var_17; [L54] state_20 = init_21_arg_1 VAL [init_19_arg_1=0, init_21_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_23=4294967295, mask_SORT_4=7, msb_SORT_1=1, msb_SORT_23=2147483648, msb_SORT_4=4, state_18=0, state_20=0, state_6=0, state_8=0, var_13=1, var_17=0, var_25=1, var_5=0] [L57] input_2 = __VERIFIER_nondet_uchar() [L58] input_3 = __VERIFIER_nondet_uchar() [L61] SORT_4 var_10_arg_0 = state_6; [L62] SORT_4 var_10_arg_1 = state_8; [L63] SORT_1 var_10 = var_10_arg_0 <= var_10_arg_1; [L64] SORT_1 var_14_arg_0 = var_10; [L65] SORT_1 var_14 = ~var_14_arg_0; [L66] SORT_1 var_15_arg_0 = var_13; [L67] SORT_1 var_15_arg_1 = var_14; [L68] SORT_1 var_15 = var_15_arg_0 & var_15_arg_1; [L69] var_15 = var_15 & mask_SORT_1 [L70] SORT_1 bad_16_arg_0 = var_15; [L71] CALL __VERIFIER_assert(!(bad_16_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 23:57:32,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur --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 64bit --witnessprinter.graph.data.programhash 2b04c290f1a7102f69086810812946480d0557325a865f39f1fc1d9d1f1627d8 --- 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-38b53e6 [2022-11-25 23:57:35,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:57:35,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:57:35,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:57:35,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:57:35,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:57:35,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:57:35,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:57:35,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:57:35,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:57:35,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:57:35,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:57:35,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:57:35,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:57:35,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:57:35,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:57:35,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:57:35,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:57:35,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:57:35,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:57:35,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:57:35,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:57:35,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:57:35,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:57:35,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:57:35,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:57:35,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:57:35,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:57:35,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:57:35,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:57:35,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:57:35,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:57:35,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:57:35,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:57:35,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:57:35,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:57:35,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:57:35,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:57:35,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:57:35,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:57:35,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:57:35,530 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-25 23:57:35,578 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:57:35,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:57:35,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:57:35,581 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:57:35,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:57:35,582 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:57:35,583 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:57:35,583 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:57:35,583 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:57:35,584 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:57:35,585 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:57:35,585 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:57:35,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:57:35,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:57:35,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:57:35,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:57:35,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:57:35,587 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:57:35,588 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 23:57:35,588 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 23:57:35,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:57:35,588 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:57:35,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:57:35,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:57:35,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 23:57:35,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:57:35,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:57:35,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:57:35,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:57:35,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:57:35,591 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 23:57:35,591 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 23:57:35,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:57:35,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:57:35,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 23:57:35,592 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b04c290f1a7102f69086810812946480d0557325a865f39f1fc1d9d1f1627d8 [2022-11-25 23:57:36,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:57:36,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:57:36,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:57:36,133 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:57:36,134 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:57:36,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c [2022-11-25 23:57:40,147 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:57:40,449 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:57:40,450 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c [2022-11-25 23:57:40,458 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/data/0c3866c2c/be9f991b271647ec88fe92126113b9e3/FLAGd12d0d18d [2022-11-25 23:57:40,479 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/data/0c3866c2c/be9f991b271647ec88fe92126113b9e3 [2022-11-25 23:57:40,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:57:40,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:57:40,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:57:40,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:57:40,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:57:40,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:57:40" (1/1) ... [2022-11-25 23:57:40,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3851aef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:40, skipping insertion in model container [2022-11-25 23:57:40,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:57:40" (1/1) ... [2022-11-25 23:57:40,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:57:40,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:57:40,739 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_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c[1107,1120] [2022-11-25 23:57:40,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:57:40,834 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:57:40,850 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_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c[1107,1120] [2022-11-25 23:57:40,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:57:40,919 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:57:40,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:40 WrapperNode [2022-11-25 23:57:40,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:57:40,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:57:40,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:57:40,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:57:40,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:40" (1/1) ... [2022-11-25 23:57:40,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:40" (1/1) ... [2022-11-25 23:57:40,988 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2022-11-25 23:57:40,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:57:40,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:57:40,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:57:40,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:57:41,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:40" (1/1) ... [2022-11-25 23:57:41,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:40" (1/1) ... [2022-11-25 23:57:41,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:40" (1/1) ... [2022-11-25 23:57:41,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:40" (1/1) ... [2022-11-25 23:57:41,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:40" (1/1) ... [2022-11-25 23:57:41,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:40" (1/1) ... [2022-11-25 23:57:41,044 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:40" (1/1) ... [2022-11-25 23:57:41,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:40" (1/1) ... [2022-11-25 23:57:41,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:57:41,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:57:41,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:57:41,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:57:41,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:40" (1/1) ... [2022-11-25 23:57:41,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:57:41,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:57:41,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:57:41,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:57:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:57:41,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:57:41,331 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:57:41,333 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:57:41,619 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:57:41,626 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:57:41,627 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:57:41,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:57:41 BoogieIcfgContainer [2022-11-25 23:57:41,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:57:41,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:57:41,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:57:41,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:57:41,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:57:40" (1/3) ... [2022-11-25 23:57:41,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b5e586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:57:41, skipping insertion in model container [2022-11-25 23:57:41,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:57:40" (2/3) ... [2022-11-25 23:57:41,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b5e586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:57:41, skipping insertion in model container [2022-11-25 23:57:41,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:57:41" (3/3) ... [2022-11-25 23:57:41,656 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.dyn_partition.c [2022-11-25 23:57:41,679 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:57:41,680 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:57:41,746 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:57:41,755 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;@496de223, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:57:41,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:57:41,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:57:41,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:57:41,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:57:41,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:57:41,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:57:41,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:57:41,780 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-25 23:57:41,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:57:41,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395517636] [2022-11-25 23:57:41,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:57:41,798 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:57:41,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:57:41,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:57:41,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 23:57:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:57:41,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 23:57:41,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:57:42,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:57:42,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:57:42,274 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:57:42,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395517636] [2022-11-25 23:57:42,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395517636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:57:42,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:57:42,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:57:42,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124415188] [2022-11-25 23:57:42,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:57:42,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:57:42,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:57:42,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:57:42,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:57:42,330 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-25 23:57:42,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:57:42,415 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-25 23:57:42,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:57:42,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-25 23:57:42,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:57:42,428 INFO L225 Difference]: With dead ends: 20 [2022-11-25 23:57:42,428 INFO L226 Difference]: Without dead ends: 11 [2022-11-25 23:57:42,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:57:42,437 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:57:42,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:57:42,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-25 23:57:42,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-25 23:57:42,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-11-25 23:57:42,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-25 23:57:42,487 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-25 23:57:42,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:57:42,488 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-25 23:57:42,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-25 23:57:42,489 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-25 23:57:42,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:57:42,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:57:42,490 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 23:57:42,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:57:42,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:57:42,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:57:42,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:57:42,704 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-25 23:57:42,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:57:42,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260695516] [2022-11-25 23:57:42,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:57:42,706 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:57:42,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:57:42,707 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:57:42,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 23:57:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:57:42,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 23:57:42,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:57:43,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:57:43,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:57:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:57:44,055 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:57:44,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260695516] [2022-11-25 23:57:44,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260695516] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:57:44,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [107486408] [2022-11-25 23:57:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:57:44,062 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:57:44,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:57:44,101 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:57:44,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-25 23:57:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:57:44,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-25 23:57:44,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:57:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:57:44,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:57:44,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:57:44,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [107486408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:57:44,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253445598] [2022-11-25 23:57:44,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:57:44,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:57:44,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:57:44,842 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:57:44,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:57:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:57:44,976 WARN L261 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-25 23:57:44,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:57:45,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:57:45,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:57:46,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:57:46,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253445598] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:57:46,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 23:57:46,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 14 [2022-11-25 23:57:46,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214629427] [2022-11-25 23:57:46,459 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 23:57:46,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 23:57:46,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:57:46,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 23:57:46,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-25 23:57:46,462 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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) [2022-11-25 23:57:46,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:57:46,671 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-25 23:57:46,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 23:57:46,673 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-25 23:57:46,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:57:46,674 INFO L225 Difference]: With dead ends: 16 [2022-11-25 23:57:46,674 INFO L226 Difference]: Without dead ends: 14 [2022-11-25 23:57:46,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:57:46,676 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:57:46,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 24 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:57:46,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-25 23:57:46,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-25 23:57:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:57:46,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-25 23:57:46,685 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-25 23:57:46,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:57:46,686 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-25 23:57:46,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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) [2022-11-25 23:57:46,686 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-25 23:57:46,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 23:57:46,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:57:46,687 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 23:57:46,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:57:46,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:57:47,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:57:47,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:57:47,289 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:57:47,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:57:47,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-25 23:57:47,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:57:47,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993845070] [2022-11-25 23:57:47,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 23:57:47,291 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:57:47,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:57:47,293 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:57:47,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 23:57:47,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 23:57:47,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:57:47,403 WARN L261 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-25 23:57:47,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:57:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:57:47,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:57:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:57:49,716 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:57:49,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993845070] [2022-11-25 23:57:49,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993845070] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:57:49,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1444880410] [2022-11-25 23:57:49,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 23:57:49,717 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:57:49,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:57:49,719 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:57:49,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-25 23:57:49,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 23:57:49,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:57:49,929 WARN L261 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-25 23:57:49,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:57:50,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:57:50,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:57:51,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:57:51,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1444880410] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:57:51,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174029172] [2022-11-25 23:57:51,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 23:57:51,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:57:51,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:57:51,228 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:57:51,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 23:57:51,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 23:57:51,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:57:51,337 WARN L261 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-25 23:57:51,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:57:51,746 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:57:51,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:57:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:57:52,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174029172] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:57:52,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 23:57:52,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 12 [2022-11-25 23:57:52,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866539462] [2022-11-25 23:57:52,954 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 23:57:52,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:57:52,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:57:52,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:57:52,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:57:52,958 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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) [2022-11-25 23:57:54,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:57:54,174 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2022-11-25 23:57:54,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 23:57:54,179 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-25 23:57:54,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:57:54,180 INFO L225 Difference]: With dead ends: 27 [2022-11-25 23:57:54,180 INFO L226 Difference]: Without dead ends: 25 [2022-11-25 23:57:54,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-11-25 23:57:54,182 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:57:54,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 27 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:57:54,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-25 23:57:54,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2022-11-25 23:57:54,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:57:54,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-11-25 23:57:54,191 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2022-11-25 23:57:54,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:57:54,192 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-11-25 23:57:54,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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) [2022-11-25 23:57:54,193 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-11-25 23:57:54,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 23:57:54,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:57:54,194 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-25 23:57:54,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-25 23:57:54,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 23:57:54,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-25 23:57:54,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 23:57:54,809 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:57:54,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:57:54,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-25 23:57:54,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:57:54,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379205405] [2022-11-25 23:57:54,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:57:54,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:57:54,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:57:54,813 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:57:54,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-25 23:57:54,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 23:57:54,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:57:54,943 WARN L261 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-25 23:57:54,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:57:55,527 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:57:55,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:57:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:57:58,259 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:57:58,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379205405] [2022-11-25 23:57:58,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379205405] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:57:58,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [283507878] [2022-11-25 23:57:58,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:57:58,260 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:57:58,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:57:58,262 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:57:58,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-25 23:57:58,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 23:57:58,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:57:58,529 WARN L261 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 98 conjunts are in the unsatisfiable core [2022-11-25 23:57:58,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:57:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:57:58,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:58:00,684 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:58:00,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [283507878] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:58:00,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741459664] [2022-11-25 23:58:00,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:58:00,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:58:00,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:58:00,687 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:58:00,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 23:58:00,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 23:58:00,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:58:00,822 WARN L261 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 93 conjunts are in the unsatisfiable core [2022-11-25 23:58:00,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:58:01,702 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:58:01,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:58:08,010 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:58:08,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741459664] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:58:08,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 23:58:08,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 10, 10] total 24 [2022-11-25 23:58:08,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781777158] [2022-11-25 23:58:08,012 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 23:58:08,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 23:58:08,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:58:08,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 23:58:08,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2022-11-25 23:58:08,014 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 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) [2022-11-25 23:58:12,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:58:12,329 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2022-11-25 23:58:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 23:58:12,330 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-25 23:58:12,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:58:12,331 INFO L225 Difference]: With dead ends: 28 [2022-11-25 23:58:12,331 INFO L226 Difference]: Without dead ends: 26 [2022-11-25 23:58:12,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=190, Invalid=1000, Unknown=0, NotChecked=0, Total=1190 [2022-11-25 23:58:12,336 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 37 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:58:12,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 48 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:58:12,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-25 23:58:12,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-11-25 23:58:12,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 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) [2022-11-25 23:58:12,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-11-25 23:58:12,346 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 14 [2022-11-25 23:58:12,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:58:12,347 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-11-25 23:58:12,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 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) [2022-11-25 23:58:12,347 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-11-25 23:58:12,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-25 23:58:12,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:58:12,349 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2022-11-25 23:58:12,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-25 23:58:12,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-25 23:58:12,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 23:58:12,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:58:12,956 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:58:12,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:58:12,957 INFO L85 PathProgramCache]: Analyzing trace with hash 142558665, now seen corresponding path program 4 times [2022-11-25 23:58:12,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:58:12,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096099080] [2022-11-25 23:58:12,958 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 23:58:12,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:58:12,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:58:12,961 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:58:13,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-25 23:58:13,128 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 23:58:13,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:58:13,140 WARN L261 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 174 conjunts are in the unsatisfiable core [2022-11-25 23:58:13,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:58:14,258 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:58:14,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:58:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:58:21,291 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:58:21,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096099080] [2022-11-25 23:58:21,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096099080] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:58:21,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [798796893] [2022-11-25 23:58:21,292 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 23:58:21,292 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:58:21,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:58:21,293 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:58:21,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-25 23:58:21,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 23:58:21,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:58:21,587 WARN L261 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 175 conjunts are in the unsatisfiable core [2022-11-25 23:58:21,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:58:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:58:22,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:58:26,904 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:58:26,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [798796893] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:58:26,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610141831] [2022-11-25 23:58:26,905 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 23:58:26,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:58:26,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:58:26,908 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:58:26,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 23:58:27,071 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 23:58:27,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:58:27,079 WARN L261 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 177 conjunts are in the unsatisfiable core [2022-11-25 23:58:27,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:58:28,007 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:58:28,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:58:33,429 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:58:33,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610141831] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:58:33,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 23:58:33,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 11, 11] total 20 [2022-11-25 23:58:33,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071417308] [2022-11-25 23:58:33,430 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 23:58:33,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 23:58:33,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:58:33,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 23:58:33,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-11-25 23:58:33,433 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 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) [2022-11-25 23:58:46,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:58:46,281 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2022-11-25 23:58:46,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-25 23:58:46,283 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-25 23:58:46,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:58:46,284 INFO L225 Difference]: With dead ends: 55 [2022-11-25 23:58:46,284 INFO L226 Difference]: Without dead ends: 53 [2022-11-25 23:58:46,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 100 SyntacticMatches, 14 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=328, Invalid=1564, Unknown=0, NotChecked=0, Total=1892 [2022-11-25 23:58:46,286 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 71 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:58:46,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 35 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 23:58:46,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-25 23:58:46,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2022-11-25 23:58:46,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 44 states have internal predecessors, (48), 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) [2022-11-25 23:58:46,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2022-11-25 23:58:46,314 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 23 [2022-11-25 23:58:46,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:58:46,315 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2022-11-25 23:58:46,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 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) [2022-11-25 23:58:46,315 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2022-11-25 23:58:46,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-25 23:58:46,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:58:46,316 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1] [2022-11-25 23:58:46,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-25 23:58:46,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-25 23:58:46,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-25 23:58:46,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:58:46,924 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:58:46,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:58:46,925 INFO L85 PathProgramCache]: Analyzing trace with hash -752690141, now seen corresponding path program 5 times [2022-11-25 23:58:46,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:58:46,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730740631] [2022-11-25 23:58:46,926 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 23:58:46,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:58:46,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:58:46,927 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:58:46,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-25 23:58:47,136 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-25 23:58:47,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:58:47,146 WARN L261 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 200 conjunts are in the unsatisfiable core [2022-11-25 23:58:47,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:58:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:58:48,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:58:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:58:56,986 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:58:56,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730740631] [2022-11-25 23:58:56,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730740631] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:58:56,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1405267911] [2022-11-25 23:58:56,987 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 23:58:56,987 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:58:56,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:58:56,995 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:58:56,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-25 23:58:57,375 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-25 23:58:57,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:58:57,395 WARN L261 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 201 conjunts are in the unsatisfiable core [2022-11-25 23:58:57,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:58:58,467 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:58:58,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:59:38,577 WARN L233 SmtUtils]: Spent 34.22s on a formula simplification. DAG size of input: 358 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:59:38,766 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:59:38,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1405267911] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:59:38,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003787479] [2022-11-25 23:59:38,767 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 23:59:38,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:59:38,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:59:38,769 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:59:38,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-25 23:59:39,027 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-25 23:59:39,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:59:39,037 WARN L261 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 204 conjunts are in the unsatisfiable core [2022-11-25 23:59:39,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:59:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:59:40,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:00:21,837 WARN L233 SmtUtils]: Spent 31.23s on a formula simplification. DAG size of input: 358 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:00:21,969 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:00:21,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003787479] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:00:21,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:00:21,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 12, 12] total 24 [2022-11-26 00:00:21,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212422264] [2022-11-26 00:00:21,970 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:00:21,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-26 00:00:21,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:00:21,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-26 00:00:21,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=447, Unknown=2, NotChecked=0, Total=552 [2022-11-26 00:00:21,972 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 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) [2022-11-26 00:00:30,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:30,757 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2022-11-26 00:00:30,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-26 00:00:30,757 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-26 00:00:30,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:30,758 INFO L225 Difference]: With dead ends: 52 [2022-11-26 00:00:30,759 INFO L226 Difference]: Without dead ends: 50 [2022-11-26 00:00:30,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 114 SyntacticMatches, 14 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 91.5s TimeCoverageRelationStatistics Valid=375, Invalid=1693, Unknown=2, NotChecked=0, Total=2070 [2022-11-26 00:00:30,761 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 58 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:30,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 52 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-26 00:00:30,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-26 00:00:30,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2022-11-26 00:00:30,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 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) [2022-11-26 00:00:30,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2022-11-26 00:00:30,781 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 26 [2022-11-26 00:00:30,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:30,782 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2022-11-26 00:00:30,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 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) [2022-11-26 00:00:30,782 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2022-11-26 00:00:30,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-26 00:00:30,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:30,785 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1] [2022-11-26 00:00:30,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2022-11-26 00:00:30,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-26 00:00:31,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-26 00:00:31,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:00:31,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:00:31,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:31,388 INFO L85 PathProgramCache]: Analyzing trace with hash 969805001, now seen corresponding path program 6 times [2022-11-26 00:00:31,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:00:31,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418678840] [2022-11-26 00:00:31,390 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-26 00:00:31,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:00:31,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:00:31,392 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:00:31,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-26 00:00:31,868 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-11-26 00:00:31,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:00:31,896 WARN L261 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 382 conjunts are in the unsatisfiable core [2022-11-26 00:00:31,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:00:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:00:35,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:01:04,755 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 562 DAG size of output: 379 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:01:21,430 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:01:21,430 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:01:21,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418678840] [2022-11-26 00:01:21,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418678840] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:01:21,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1416882790] [2022-11-26 00:01:21,431 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-26 00:01:21,432 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:01:21,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:01:21,433 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:01:21,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-26 00:01:22,212 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-11-26 00:01:22,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:01:22,232 WARN L261 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 388 conjunts are in the unsatisfiable core [2022-11-26 00:01:22,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:01:24,809 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:01:24,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:02:10,091 WARN L233 SmtUtils]: Spent 7.51s on a formula simplification. DAG size of input: 658 DAG size of output: 443 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:02:23,654 WARN L233 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 696 DAG size of output: 487 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:02:27,106 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:02:27,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1416882790] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:02:27,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799750672] [2022-11-26 00:02:27,107 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-26 00:02:27,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:02:27,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:02:27,108 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:02:27,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e15fa5b-4f7b-40c4-9c2a-f882b3e93cfc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-26 00:02:27,528 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-11-26 00:02:27,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:02:27,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 315 conjunts are in the unsatisfiable core [2022-11-26 00:02:27,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:02:38,607 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:02:38,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:03:22,875 WARN L233 SmtUtils]: Spent 29.58s on a formula simplification. DAG size of input: 271 DAG size of output: 220 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:03:39,733 WARN L233 SmtUtils]: Spent 14.86s on a formula simplification. DAG size of input: 306 DAG size of output: 196 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:03:59,527 WARN L233 SmtUtils]: Spent 17.91s on a formula simplification. DAG size of input: 278 DAG size of output: 210 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:04:45,666 WARN L233 SmtUtils]: Spent 44.17s on a formula simplification. DAG size of input: 303 DAG size of output: 228 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:04:58,176 WARN L233 SmtUtils]: Spent 10.45s on a formula simplification. DAG size of input: 326 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:05:59,484 WARN L233 SmtUtils]: Spent 58.81s on a formula simplification. DAG size of input: 354 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:06:16,323 WARN L233 SmtUtils]: Spent 14.02s on a formula simplification. DAG size of input: 439 DAG size of output: 276 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:06:48,026 WARN L233 SmtUtils]: Spent 22.93s on a formula simplification. DAG size of input: 402 DAG size of output: 294 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:07:18,185 WARN L233 SmtUtils]: Spent 27.30s on a formula simplification. DAG size of input: 310 DAG size of output: 303 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:08:13,112 WARN L233 SmtUtils]: Spent 51.60s on a formula simplification. DAG size of input: 444 DAG size of output: 422 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:08:55,694 WARN L233 SmtUtils]: Spent 36.40s on a formula simplification. DAG size of input: 567 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:09:32,399 WARN L233 SmtUtils]: Spent 28.77s on a formula simplification. DAG size of input: 498 DAG size of output: 496 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:09:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:09:33,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799750672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:09:33,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:09:33,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 19, 23, 23] total 76 [2022-11-26 00:09:33,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561136692] [2022-11-26 00:09:33,110 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:09:33,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-11-26 00:09:33,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:09:33,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-11-26 00:09:33,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=516, Invalid=5177, Unknown=7, NotChecked=0, Total=5700 [2022-11-26 00:09:33,115 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 76 states, 76 states have (on average 2.473684210526316) internal successors, (188), 76 states have internal predecessors, (188), 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)