./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS --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 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be --- 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-8393723 [2022-11-19 08:03:51,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:03:51,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:03:51,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:03:51,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:03:51,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:03:51,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:03:51,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:03:51,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:03:51,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:03:51,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:03:51,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:03:51,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:03:51,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:03:51,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:03:51,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:03:51,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:03:51,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:03:51,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:03:51,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:03:51,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:03:51,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:03:51,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:03:51,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:03:51,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:03:51,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:03:51,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:03:51,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:03:51,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:03:51,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:03:51,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:03:51,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:03:51,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:03:51,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:03:51,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:03:51,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:03:51,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:03:51,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:03:51,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:03:51,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:03:51,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:03:51,673 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:03:51,696 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:03:51,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:03:51,697 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:03:51,697 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:03:51,698 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:03:51,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:03:51,698 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:03:51,699 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:03:51,699 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:03:51,699 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:03:51,699 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:03:51,700 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:03:51,700 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:03:51,700 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:03:51,700 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:03:51,700 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:03:51,701 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:03:51,701 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:03:51,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:03:51,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:03:51,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:03:51,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:03:51,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:03:51,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:03:51,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:03:51,703 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:03:51,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:03:51,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:03:51,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:03:51,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:03:51,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:03:51,705 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:03:51,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:03:51,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:03:51,705 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:03:51,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:03:51,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:03:51,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:03:51,706 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_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be [2022-11-19 08:03:52,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:03:52,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:03:52,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:03:52,031 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:03:52,032 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:03:52,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-11-19 08:03:52,104 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/data/e67d92af1/5bec802617d54d62a5163b37eefc7ce9/FLAGac0e78906 [2022-11-19 08:03:52,998 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:03:53,000 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-11-19 08:03:53,044 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/data/e67d92af1/5bec802617d54d62a5163b37eefc7ce9/FLAGac0e78906 [2022-11-19 08:03:53,492 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/data/e67d92af1/5bec802617d54d62a5163b37eefc7ce9 [2022-11-19 08:03:53,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:03:53,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:03:53,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:03:53,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:03:53,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:03:53,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:53" (1/1) ... [2022-11-19 08:03:53,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f92cfb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:53, skipping insertion in model container [2022-11-19 08:03:53,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:53" (1/1) ... [2022-11-19 08:03:53,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:03:53,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:03:54,757 WARN L234 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_fe321c91-8cf7-47f8-8316-32de497b6e13/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2022-11-19 08:03:55,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:03:55,294 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:03:55,507 WARN L234 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_fe321c91-8cf7-47f8-8316-32de497b6e13/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2022-11-19 08:03:55,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:03:55,831 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:03:55,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:55 WrapperNode [2022-11-19 08:03:55,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:03:55,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:03:55,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:03:55,833 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:03:55,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:55" (1/1) ... [2022-11-19 08:03:55,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:55" (1/1) ... [2022-11-19 08:03:56,052 INFO L138 Inliner]: procedures = 174, calls = 1356, calls flagged for inlining = 82, calls inlined = 66, statements flattened = 2485 [2022-11-19 08:03:56,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:03:56,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:03:56,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:03:56,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:03:56,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:55" (1/1) ... [2022-11-19 08:03:56,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:55" (1/1) ... [2022-11-19 08:03:56,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:55" (1/1) ... [2022-11-19 08:03:56,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:55" (1/1) ... [2022-11-19 08:03:56,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:55" (1/1) ... [2022-11-19 08:03:56,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:55" (1/1) ... [2022-11-19 08:03:56,266 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:55" (1/1) ... [2022-11-19 08:03:56,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:55" (1/1) ... [2022-11-19 08:03:56,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:03:56,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:03:56,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:03:56,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:03:56,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:55" (1/1) ... [2022-11-19 08:03:56,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:03:56,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:03:56,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:03:56,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:03:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_reset_device [2022-11-19 08:03:56,406 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_reset_device [2022-11-19 08:03:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_resume [2022-11-19 08:03:56,406 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_resume [2022-11-19 08:03:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 08:03:56,407 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 08:03:56,407 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 08:03:56,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_12 [2022-11-19 08:03:56,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_12 [2022-11-19 08:03:56,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 08:03:56,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 08:03:56,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:03:56,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:03:56,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:03:56,408 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-19 08:03:56,409 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-19 08:03:56,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-19 08:03:56,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-19 08:03:56,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 08:03:56,410 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 08:03:56,410 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-19 08:03:56,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-19 08:03:56,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:03:56,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:03:56,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-19 08:03:56,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-19 08:03:56,411 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb_fwload [2022-11-19 08:03:56,411 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb_fwload [2022-11-19 08:03:56,411 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-19 08:03:56,412 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-19 08:03:56,412 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-11-19 08:03:56,412 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-11-19 08:03:56,412 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb [2022-11-19 08:03:56,412 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb [2022-11-19 08:03:56,412 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive_fwload [2022-11-19 08:03:56,413 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive_fwload [2022-11-19 08:03:56,413 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:03:56,413 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:03:56,413 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_send_fw_pkt [2022-11-19 08:03:56,414 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_send_fw_pkt [2022-11-19 08:03:56,414 INFO L130 BoogieDeclarations]: Found specification of procedure __if_usb_submit_rx_urb [2022-11-19 08:03:56,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __if_usb_submit_rx_urb [2022-11-19 08:03:56,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:03:56,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 08:03:56,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 08:03:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_free [2022-11-19 08:03:56,415 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_free [2022-11-19 08:03:56,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:03:56,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:03:56,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:03:56,417 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:03:56,418 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 08:03:56,419 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 08:03:56,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:03:56,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-11-19 08:03:56,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-11-19 08:03:56,420 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_disconnect [2022-11-19 08:03:56,420 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_disconnect [2022-11-19 08:03:56,420 INFO L130 BoogieDeclarations]: Found specification of procedure usb_tx_block [2022-11-19 08:03:56,420 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_tx_block [2022-11-19 08:03:56,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:03:56,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-11-19 08:03:56,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-11-19 08:03:56,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_9 [2022-11-19 08:03:56,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_9 [2022-11-19 08:03:56,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 08:03:56,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 08:03:56,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:03:56,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:03:56,422 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 08:03:56,422 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 08:03:56,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 08:03:56,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_8 [2022-11-19 08:03:56,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_8 [2022-11-19 08:03:56,423 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-19 08:03:56,424 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-19 08:03:56,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:03:56,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2022-11-19 08:03:56,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2022-11-19 08:03:56,424 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-19 08:03:56,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-19 08:03:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-11-19 08:03:56,425 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-11-19 08:03:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2022-11-19 08:03:56,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2022-11-19 08:03:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:03:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:03:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-19 08:03:56,427 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-19 08:03:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_remove_card [2022-11-19 08:03:56,428 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_remove_card [2022-11-19 08:03:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 08:03:56,429 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 08:03:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-19 08:03:56,429 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-19 08:03:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive [2022-11-19 08:03:56,429 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive [2022-11-19 08:03:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-19 08:03:56,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-19 08:03:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:03:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-19 08:03:56,430 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-19 08:03:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 08:03:56,431 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 08:03:56,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 08:03:56,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:03:56,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:03:57,119 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:03:57,122 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:03:57,408 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:03:58,431 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-11-19 08:03:59,577 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:04:00,063 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:04:00,063 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 08:04:00,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:00 BoogieIcfgContainer [2022-11-19 08:04:00,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:04:00,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:04:00,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:04:00,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:04:00,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:03:53" (1/3) ... [2022-11-19 08:04:00,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4776e5d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:00, skipping insertion in model container [2022-11-19 08:04:00,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:55" (2/3) ... [2022-11-19 08:04:00,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4776e5d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:00, skipping insertion in model container [2022-11-19 08:04:00,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:00" (3/3) ... [2022-11-19 08:04:00,076 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-11-19 08:04:00,096 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:04:00,096 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:04:00,158 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:04:00,164 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@765fc056, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:04:00,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:04:00,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 598 states, 375 states have (on average 1.376) internal successors, (516), 405 states have internal predecessors, (516), 178 states have call successors, (178), 45 states have call predecessors, (178), 43 states have return successors, (172), 166 states have call predecessors, (172), 172 states have call successors, (172) [2022-11-19 08:04:00,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-19 08:04:00,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:00,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:00,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:04:00,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:00,187 INFO L85 PathProgramCache]: Analyzing trace with hash -200661438, now seen corresponding path program 1 times [2022-11-19 08:04:00,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:00,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720165262] [2022-11-19 08:04:00,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:00,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:00,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:04:00,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:00,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720165262] [2022-11-19 08:04:00,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720165262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:00,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:00,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:04:00,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977523517] [2022-11-19 08:04:00,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:00,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:04:00,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:00,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:04:00,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:04:00,883 INFO L87 Difference]: Start difference. First operand has 598 states, 375 states have (on average 1.376) internal successors, (516), 405 states have internal predecessors, (516), 178 states have call successors, (178), 45 states have call predecessors, (178), 43 states have return successors, (172), 166 states have call predecessors, (172), 172 states have call successors, (172) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 08:04:01,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:01,783 INFO L93 Difference]: Finished difference Result 1758 states and 2549 transitions. [2022-11-19 08:04:01,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:04:01,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-19 08:04:01,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:01,820 INFO L225 Difference]: With dead ends: 1758 [2022-11-19 08:04:01,820 INFO L226 Difference]: Without dead ends: 1146 [2022-11-19 08:04:01,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:04:01,831 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 821 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:01,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1712 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 08:04:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-11-19 08:04:02,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1146. [2022-11-19 08:04:02,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 726 states have (on average 1.3484848484848484) internal successors, (979), 766 states have internal predecessors, (979), 336 states have call successors, (336), 84 states have call predecessors, (336), 83 states have return successors, (331), 319 states have call predecessors, (331), 331 states have call successors, (331) [2022-11-19 08:04:02,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1646 transitions. [2022-11-19 08:04:02,044 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1646 transitions. Word has length 22 [2022-11-19 08:04:02,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:02,045 INFO L495 AbstractCegarLoop]: Abstraction has 1146 states and 1646 transitions. [2022-11-19 08:04:02,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 08:04:02,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1646 transitions. [2022-11-19 08:04:02,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 08:04:02,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:02,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:02,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:04:02,055 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:04:02,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:02,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1449986404, now seen corresponding path program 1 times [2022-11-19 08:04:02,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:02,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422760893] [2022-11-19 08:04:02,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:02,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:04:02,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:02,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422760893] [2022-11-19 08:04:02,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422760893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:02,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:02,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:04:02,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592958021] [2022-11-19 08:04:02,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:02,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:04:02,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:02,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:04:02,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:04:02,803 INFO L87 Difference]: Start difference. First operand 1146 states and 1646 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:04:03,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:03,630 INFO L93 Difference]: Finished difference Result 2172 states and 3116 transitions. [2022-11-19 08:04:03,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:04:03,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2022-11-19 08:04:03,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:03,642 INFO L225 Difference]: With dead ends: 2172 [2022-11-19 08:04:03,642 INFO L226 Difference]: Without dead ends: 2169 [2022-11-19 08:04:03,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:04:03,645 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 739 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:03,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 1649 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 08:04:03,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2169 states. [2022-11-19 08:04:03,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2169 to 2157. [2022-11-19 08:04:03,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2157 states, 1370 states have (on average 1.3489051094890512) internal successors, (1848), 1446 states have internal predecessors, (1848), 628 states have call successors, (628), 161 states have call predecessors, (628), 158 states have return successors, (623), 595 states have call predecessors, (623), 623 states have call successors, (623) [2022-11-19 08:04:03,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 3099 transitions. [2022-11-19 08:04:03,818 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 3099 transitions. Word has length 30 [2022-11-19 08:04:03,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:03,819 INFO L495 AbstractCegarLoop]: Abstraction has 2157 states and 3099 transitions. [2022-11-19 08:04:03,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:04:03,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 3099 transitions. [2022-11-19 08:04:03,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-19 08:04:03,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:03,823 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:03,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:04:03,824 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:04:03,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:03,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2000308952, now seen corresponding path program 1 times [2022-11-19 08:04:03,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:03,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521500233] [2022-11-19 08:04:03,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:03,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:04:04,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:04,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521500233] [2022-11-19 08:04:04,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521500233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:04,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:04,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:04:04,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842374500] [2022-11-19 08:04:04,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:04,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:04:04,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:04,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:04:04,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:04:04,324 INFO L87 Difference]: Start difference. First operand 2157 states and 3099 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:04:05,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:05,062 INFO L93 Difference]: Finished difference Result 4410 states and 6340 transitions. [2022-11-19 08:04:05,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:04:05,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-11-19 08:04:05,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:05,080 INFO L225 Difference]: With dead ends: 4410 [2022-11-19 08:04:05,080 INFO L226 Difference]: Without dead ends: 3278 [2022-11-19 08:04:05,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:04:05,086 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 810 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:05,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 1679 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 08:04:05,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3278 states. [2022-11-19 08:04:05,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3278 to 3267. [2022-11-19 08:04:05,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3267 states, 2075 states have (on average 1.3479518072289156) internal successors, (2797), 2187 states have internal predecessors, (2797), 952 states have call successors, (952), 242 states have call predecessors, (952), 239 states have return successors, (947), 905 states have call predecessors, (947), 947 states have call successors, (947) [2022-11-19 08:04:05,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3267 states to 3267 states and 4696 transitions. [2022-11-19 08:04:05,297 INFO L78 Accepts]: Start accepts. Automaton has 3267 states and 4696 transitions. Word has length 31 [2022-11-19 08:04:05,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:05,297 INFO L495 AbstractCegarLoop]: Abstraction has 3267 states and 4696 transitions. [2022-11-19 08:04:05,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:04:05,297 INFO L276 IsEmpty]: Start isEmpty. Operand 3267 states and 4696 transitions. [2022-11-19 08:04:05,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-19 08:04:05,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:05,299 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:05,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:04:05,299 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:04:05,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:05,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1880433889, now seen corresponding path program 1 times [2022-11-19 08:04:05,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:05,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992123554] [2022-11-19 08:04:05,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:05,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:05,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:04:05,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:05,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992123554] [2022-11-19 08:04:05,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992123554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:05,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:05,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:04:05,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596165191] [2022-11-19 08:04:05,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:05,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:04:05,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:05,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:04:05,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:04:05,501 INFO L87 Difference]: Start difference. First operand 3267 states and 4696 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:04:06,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:06,398 INFO L93 Difference]: Finished difference Result 5369 states and 7806 transitions. [2022-11-19 08:04:06,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:04:06,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2022-11-19 08:04:06,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:06,436 INFO L225 Difference]: With dead ends: 5369 [2022-11-19 08:04:06,436 INFO L226 Difference]: Without dead ends: 5366 [2022-11-19 08:04:06,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:04:06,445 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 796 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:06,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 1700 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 08:04:06,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5366 states. [2022-11-19 08:04:06,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5366 to 5357. [2022-11-19 08:04:06,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5357 states, 3401 states have (on average 1.3490149955895325) internal successors, (4588), 3593 states have internal predecessors, (4588), 1564 states have call successors, (1564), 400 states have call predecessors, (1564), 391 states have return successors, (1643), 1475 states have call predecessors, (1643), 1559 states have call successors, (1643) [2022-11-19 08:04:06,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5357 states to 5357 states and 7795 transitions. [2022-11-19 08:04:06,918 INFO L78 Accepts]: Start accepts. Automaton has 5357 states and 7795 transitions. Word has length 32 [2022-11-19 08:04:06,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:06,919 INFO L495 AbstractCegarLoop]: Abstraction has 5357 states and 7795 transitions. [2022-11-19 08:04:06,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:04:06,919 INFO L276 IsEmpty]: Start isEmpty. Operand 5357 states and 7795 transitions. [2022-11-19 08:04:06,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-19 08:04:06,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:06,921 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:06,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:04:06,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:04:06,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:06,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1835697931, now seen corresponding path program 1 times [2022-11-19 08:04:06,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:06,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464104644] [2022-11-19 08:04:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:06,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:04:07,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:07,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464104644] [2022-11-19 08:04:07,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464104644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:07,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:07,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:04:07,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342275326] [2022-11-19 08:04:07,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:07,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:04:07,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:07,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:04:07,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:04:07,105 INFO L87 Difference]: Start difference. First operand 5357 states and 7795 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:04:07,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:07,679 INFO L93 Difference]: Finished difference Result 5359 states and 7796 transitions. [2022-11-19 08:04:07,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:04:07,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2022-11-19 08:04:07,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:07,711 INFO L225 Difference]: With dead ends: 5359 [2022-11-19 08:04:07,711 INFO L226 Difference]: Without dead ends: 5356 [2022-11-19 08:04:07,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:04:07,717 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 819 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:07,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 754 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 08:04:07,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5356 states. [2022-11-19 08:04:08,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5356 to 5356. [2022-11-19 08:04:08,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5356 states, 3401 states have (on average 1.3487209644222287) internal successors, (4587), 3592 states have internal predecessors, (4587), 1563 states have call successors, (1563), 400 states have call predecessors, (1563), 391 states have return successors, (1643), 1475 states have call predecessors, (1643), 1559 states have call successors, (1643) [2022-11-19 08:04:08,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5356 states to 5356 states and 7793 transitions. [2022-11-19 08:04:08,123 INFO L78 Accepts]: Start accepts. Automaton has 5356 states and 7793 transitions. Word has length 33 [2022-11-19 08:04:08,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:08,124 INFO L495 AbstractCegarLoop]: Abstraction has 5356 states and 7793 transitions. [2022-11-19 08:04:08,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:04:08,124 INFO L276 IsEmpty]: Start isEmpty. Operand 5356 states and 7793 transitions. [2022-11-19 08:04:08,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 08:04:08,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:08,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:08,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:04:08,126 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:04:08,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:08,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1071672226, now seen corresponding path program 1 times [2022-11-19 08:04:08,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:08,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593630974] [2022-11-19 08:04:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:08,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:08,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:04:08,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:08,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593630974] [2022-11-19 08:04:08,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593630974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:08,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:08,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:04:08,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352060840] [2022-11-19 08:04:08,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:08,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:04:08,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:08,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:04:08,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:04:08,293 INFO L87 Difference]: Start difference. First operand 5356 states and 7793 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:04:08,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:08,937 INFO L93 Difference]: Finished difference Result 5358 states and 7794 transitions. [2022-11-19 08:04:08,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:04:08,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2022-11-19 08:04:08,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:08,968 INFO L225 Difference]: With dead ends: 5358 [2022-11-19 08:04:08,968 INFO L226 Difference]: Without dead ends: 5349 [2022-11-19 08:04:08,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:04:08,974 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 816 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:08,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 753 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 08:04:08,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5349 states. [2022-11-19 08:04:09,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5349 to 5349. [2022-11-19 08:04:09,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5349 states, 3395 states have (on average 1.348159057437408) internal successors, (4577), 3585 states have internal predecessors, (4577), 1562 states have call successors, (1562), 400 states have call predecessors, (1562), 391 states have return successors, (1643), 1475 states have call predecessors, (1643), 1559 states have call successors, (1643) [2022-11-19 08:04:09,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5349 states to 5349 states and 7782 transitions. [2022-11-19 08:04:09,480 INFO L78 Accepts]: Start accepts. Automaton has 5349 states and 7782 transitions. Word has length 34 [2022-11-19 08:04:09,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:09,482 INFO L495 AbstractCegarLoop]: Abstraction has 5349 states and 7782 transitions. [2022-11-19 08:04:09,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:04:09,483 INFO L276 IsEmpty]: Start isEmpty. Operand 5349 states and 7782 transitions. [2022-11-19 08:04:09,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-19 08:04:09,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:09,494 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:09,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:04:09,495 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:04:09,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:09,495 INFO L85 PathProgramCache]: Analyzing trace with hash -995352358, now seen corresponding path program 1 times [2022-11-19 08:04:09,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:09,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613040793] [2022-11-19 08:04:09,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:09,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:09,810 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 08:04:09,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:09,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613040793] [2022-11-19 08:04:09,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613040793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:09,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:09,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:04:09,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53099821] [2022-11-19 08:04:09,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:09,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:04:09,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:09,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:04:09,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:04:09,817 INFO L87 Difference]: Start difference. First operand 5349 states and 7782 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:04:10,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:10,801 INFO L93 Difference]: Finished difference Result 8327 states and 12120 transitions. [2022-11-19 08:04:10,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:04:10,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 97 [2022-11-19 08:04:10,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:10,830 INFO L225 Difference]: With dead ends: 8327 [2022-11-19 08:04:10,830 INFO L226 Difference]: Without dead ends: 2992 [2022-11-19 08:04:10,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:04:10,848 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 84 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:10,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1488 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 08:04:10,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2022-11-19 08:04:11,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 2976. [2022-11-19 08:04:11,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 1927 states have (on average 1.371043072132849) internal successors, (2642), 2047 states have internal predecessors, (2642), 825 states have call successors, (825), 228 states have call predecessors, (825), 223 states have return successors, (864), 762 states have call predecessors, (864), 822 states have call successors, (864) [2022-11-19 08:04:11,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 4331 transitions. [2022-11-19 08:04:11,139 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 4331 transitions. Word has length 97 [2022-11-19 08:04:11,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:11,139 INFO L495 AbstractCegarLoop]: Abstraction has 2976 states and 4331 transitions. [2022-11-19 08:04:11,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:04:11,140 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 4331 transitions. [2022-11-19 08:04:11,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-19 08:04:11,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:11,144 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:11,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:04:11,144 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:04:11,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:11,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1690004262, now seen corresponding path program 1 times [2022-11-19 08:04:11,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:11,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384880566] [2022-11-19 08:04:11,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:11,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:11,433 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 08:04:11,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:11,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384880566] [2022-11-19 08:04:11,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384880566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:11,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:11,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:04:11,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389533764] [2022-11-19 08:04:11,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:11,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:04:11,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:11,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:04:11,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:04:11,436 INFO L87 Difference]: Start difference. First operand 2976 states and 4331 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-19 08:04:12,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:12,348 INFO L93 Difference]: Finished difference Result 7288 states and 10576 transitions. [2022-11-19 08:04:12,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:04:12,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 103 [2022-11-19 08:04:12,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:12,372 INFO L225 Difference]: With dead ends: 7288 [2022-11-19 08:04:12,372 INFO L226 Difference]: Without dead ends: 4370 [2022-11-19 08:04:12,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:04:12,385 INFO L413 NwaCegarLoop]: 1189 mSDtfsCounter, 747 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:12,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1758 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 08:04:12,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4370 states. [2022-11-19 08:04:12,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4370 to 4354. [2022-11-19 08:04:12,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4354 states, 2828 states have (on average 1.3645685997171146) internal successors, (3859), 3001 states have internal predecessors, (3859), 1178 states have call successors, (1178), 353 states have call predecessors, (1178), 347 states have return successors, (1234), 1090 states have call predecessors, (1234), 1175 states have call successors, (1234) [2022-11-19 08:04:12,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 6271 transitions. [2022-11-19 08:04:12,733 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 6271 transitions. Word has length 103 [2022-11-19 08:04:12,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:12,733 INFO L495 AbstractCegarLoop]: Abstraction has 4354 states and 6271 transitions. [2022-11-19 08:04:12,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-19 08:04:12,734 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 6271 transitions. [2022-11-19 08:04:12,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-19 08:04:12,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:12,737 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:12,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:04:12,738 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:04:12,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:12,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1730230390, now seen corresponding path program 1 times [2022-11-19 08:04:12,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:12,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916352903] [2022-11-19 08:04:12,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:12,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:13,664 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-19 08:04:13,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:13,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916352903] [2022-11-19 08:04:13,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916352903] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:04:13,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455170512] [2022-11-19 08:04:13,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:13,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:13,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:04:13,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:04:13,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:04:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:14,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 2723 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-19 08:04:14,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:04:14,904 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 08:04:14,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:04:14,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455170512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:14,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:04:14,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 12 [2022-11-19 08:04:14,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008726734] [2022-11-19 08:04:14,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:14,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 08:04:14,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:14,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 08:04:14,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:04:14,909 INFO L87 Difference]: Start difference. First operand 4354 states and 6271 transitions. Second operand has 10 states, 9 states have (on average 9.0) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 08:04:18,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:18,851 INFO L93 Difference]: Finished difference Result 14538 states and 21319 transitions. [2022-11-19 08:04:18,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-19 08:04:18,852 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.0) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 2 states have call successors, (16) Word has length 118 [2022-11-19 08:04:18,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:18,919 INFO L225 Difference]: With dead ends: 14538 [2022-11-19 08:04:18,920 INFO L226 Difference]: Without dead ends: 10242 [2022-11-19 08:04:18,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-11-19 08:04:18,945 INFO L413 NwaCegarLoop]: 1004 mSDtfsCounter, 1067 mSDsluCounter, 7731 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 8735 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:18,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 8735 Invalid, 966 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-19 08:04:18,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10242 states. [2022-11-19 08:04:19,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10242 to 4384. [2022-11-19 08:04:19,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4384 states, 2848 states have (on average 1.3620084269662922) internal successors, (3879), 3021 states have internal predecessors, (3879), 1178 states have call successors, (1178), 353 states have call predecessors, (1178), 357 states have return successors, (1272), 1100 states have call predecessors, (1272), 1175 states have call successors, (1272) [2022-11-19 08:04:19,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 6329 transitions. [2022-11-19 08:04:19,674 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 6329 transitions. Word has length 118 [2022-11-19 08:04:19,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:19,675 INFO L495 AbstractCegarLoop]: Abstraction has 4384 states and 6329 transitions. [2022-11-19 08:04:19,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.0) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 08:04:19,675 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 6329 transitions. [2022-11-19 08:04:19,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-19 08:04:19,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:19,680 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:19,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 08:04:19,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:19,890 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:04:19,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:19,890 INFO L85 PathProgramCache]: Analyzing trace with hash -722936749, now seen corresponding path program 1 times [2022-11-19 08:04:19,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:19,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320634159] [2022-11-19 08:04:19,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:19,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:20,846 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-19 08:04:20,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:20,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320634159] [2022-11-19 08:04:20,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320634159] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:04:20,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727922409] [2022-11-19 08:04:20,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:20,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:20,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:04:20,851 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:04:20,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:04:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:21,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 08:04:21,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:04:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 08:04:21,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:04:21,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727922409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:21,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:04:21,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-19 08:04:21,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382868299] [2022-11-19 08:04:21,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:21,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:04:21,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:21,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:04:21,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:04:21,691 INFO L87 Difference]: Start difference. First operand 4384 states and 6329 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:04:22,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:22,852 INFO L93 Difference]: Finished difference Result 9017 states and 13082 transitions. [2022-11-19 08:04:22,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:04:22,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 122 [2022-11-19 08:04:22,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:22,873 INFO L225 Difference]: With dead ends: 9017 [2022-11-19 08:04:22,874 INFO L226 Difference]: Without dead ends: 4691 [2022-11-19 08:04:22,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:04:22,889 INFO L413 NwaCegarLoop]: 870 mSDtfsCounter, 174 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:22,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1490 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 08:04:22,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2022-11-19 08:04:23,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 4384. [2022-11-19 08:04:23,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4384 states, 2848 states have (on average 1.360252808988764) internal successors, (3874), 3016 states have internal predecessors, (3874), 1178 states have call successors, (1178), 353 states have call predecessors, (1178), 357 states have return successors, (1272), 1100 states have call predecessors, (1272), 1175 states have call successors, (1272) [2022-11-19 08:04:23,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 6324 transitions. [2022-11-19 08:04:23,330 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 6324 transitions. Word has length 122 [2022-11-19 08:04:23,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:23,331 INFO L495 AbstractCegarLoop]: Abstraction has 4384 states and 6324 transitions. [2022-11-19 08:04:23,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:04:23,331 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 6324 transitions. [2022-11-19 08:04:23,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-19 08:04:23,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:23,335 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:23,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:04:23,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 08:04:23,546 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:04:23,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:23,546 INFO L85 PathProgramCache]: Analyzing trace with hash -461136790, now seen corresponding path program 1 times [2022-11-19 08:04:23,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:23,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483109112] [2022-11-19 08:04:23,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:23,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-19 08:04:24,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:24,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483109112] [2022-11-19 08:04:24,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483109112] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:04:24,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015165312] [2022-11-19 08:04:24,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:24,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:24,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:04:24,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:04:24,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:04:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:25,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 2853 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-19 08:04:25,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:04:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-19 08:04:25,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:04:25,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015165312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:25,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:04:25,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-11-19 08:04:25,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486019577] [2022-11-19 08:04:25,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:25,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:04:25,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:25,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:04:25,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:04:25,352 INFO L87 Difference]: Start difference. First operand 4384 states and 6324 transitions. Second operand has 4 states, 3 states have (on average 25.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 08:04:26,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:26,644 INFO L93 Difference]: Finished difference Result 8755 states and 12634 transitions. [2022-11-19 08:04:26,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:04:26,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 25.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 125 [2022-11-19 08:04:26,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:26,663 INFO L225 Difference]: With dead ends: 8755 [2022-11-19 08:04:26,663 INFO L226 Difference]: Without dead ends: 4385 [2022-11-19 08:04:26,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:04:26,677 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 1 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:26,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2245 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 08:04:26,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4385 states. [2022-11-19 08:04:27,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4385 to 4385. [2022-11-19 08:04:27,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4385 states, 2849 states have (on average 1.3601263601263602) internal successors, (3875), 3017 states have internal predecessors, (3875), 1178 states have call successors, (1178), 353 states have call predecessors, (1178), 357 states have return successors, (1272), 1100 states have call predecessors, (1272), 1175 states have call successors, (1272) [2022-11-19 08:04:27,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 6325 transitions. [2022-11-19 08:04:27,100 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 6325 transitions. Word has length 125 [2022-11-19 08:04:27,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:27,101 INFO L495 AbstractCegarLoop]: Abstraction has 4385 states and 6325 transitions. [2022-11-19 08:04:27,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 25.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 08:04:27,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 6325 transitions. [2022-11-19 08:04:27,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-19 08:04:27,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:27,105 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:27,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:04:27,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-19 08:04:27,316 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:04:27,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:27,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1748227811, now seen corresponding path program 1 times [2022-11-19 08:04:27,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:27,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861466803] [2022-11-19 08:04:27,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:27,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 08:04:28,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:28,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861466803] [2022-11-19 08:04:28,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861466803] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:04:28,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610887214] [2022-11-19 08:04:28,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:28,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:28,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:04:28,193 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:04:28,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:04:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:29,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 2868 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-19 08:04:29,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:04:30,018 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 08:04:30,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:04:34,762 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-19 08:04:34,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610887214] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 08:04:34,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:04:34,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5, 9] total 17 [2022-11-19 08:04:34,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090982238] [2022-11-19 08:04:34,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:34,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 08:04:34,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:34,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 08:04:34,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-11-19 08:04:34,767 INFO L87 Difference]: Start difference. First operand 4385 states and 6325 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-19 08:04:41,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:41,039 INFO L93 Difference]: Finished difference Result 7432 states and 10778 transitions. [2022-11-19 08:04:41,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 08:04:41,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 126 [2022-11-19 08:04:41,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:41,078 INFO L225 Difference]: With dead ends: 7432 [2022-11-19 08:04:41,078 INFO L226 Difference]: Without dead ends: 7427 [2022-11-19 08:04:41,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 236 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-11-19 08:04:41,084 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 1165 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 2931 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 3156 SdHoareTripleChecker+Invalid, 3137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 2931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:41,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 3156 Invalid, 3137 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [206 Valid, 2931 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-19 08:04:41,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7427 states. [2022-11-19 08:04:42,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7427 to 7401. [2022-11-19 08:04:42,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7401 states, 4788 states have (on average 1.3575605680868839) internal successors, (6500), 5066 states have internal predecessors, (6500), 2017 states have call successors, (2017), 587 states have call predecessors, (2017), 595 states have return successors, (2194), 1894 states have call predecessors, (2194), 2014 states have call successors, (2194) [2022-11-19 08:04:42,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7401 states to 7401 states and 10711 transitions. [2022-11-19 08:04:42,074 INFO L78 Accepts]: Start accepts. Automaton has 7401 states and 10711 transitions. Word has length 126 [2022-11-19 08:04:42,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:42,075 INFO L495 AbstractCegarLoop]: Abstraction has 7401 states and 10711 transitions. [2022-11-19 08:04:42,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-19 08:04:42,076 INFO L276 IsEmpty]: Start isEmpty. Operand 7401 states and 10711 transitions. [2022-11-19 08:04:42,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-19 08:04:42,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:42,081 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:42,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:04:42,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:42,293 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:04:42,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:42,294 INFO L85 PathProgramCache]: Analyzing trace with hash 314297984, now seen corresponding path program 2 times [2022-11-19 08:04:42,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:42,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100475874] [2022-11-19 08:04:42,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:42,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:43,209 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 08:04:43,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:43,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100475874] [2022-11-19 08:04:43,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100475874] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:04:43,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485975369] [2022-11-19 08:04:43,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:04:43,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:43,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:04:43,213 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:04:43,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 08:04:44,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 08:04:44,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:04:44,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 2814 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-19 08:04:44,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:04:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 08:04:45,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:04:49,573 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-19 08:04:49,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485975369] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 08:04:49,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:04:49,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 13] total 21 [2022-11-19 08:04:49,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468950956] [2022-11-19 08:04:49,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:49,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 08:04:49,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:49,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 08:04:49,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2022-11-19 08:04:49,576 INFO L87 Difference]: Start difference. First operand 7401 states and 10711 transitions. Second operand has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 08:04:53,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:53,991 INFO L93 Difference]: Finished difference Result 11378 states and 16384 transitions. [2022-11-19 08:04:53,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:04:53,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 130 [2022-11-19 08:04:53,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:54,040 INFO L225 Difference]: With dead ends: 11378 [2022-11-19 08:04:54,041 INFO L226 Difference]: Without dead ends: 11373 [2022-11-19 08:04:54,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 240 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2022-11-19 08:04:54,047 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 1537 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:54,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1628 Valid, 2202 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-19 08:04:54,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11373 states. [2022-11-19 08:04:55,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11373 to 11327. [2022-11-19 08:04:55,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11327 states, 7377 states have (on average 1.360851294564186) internal successors, (10039), 7809 states have internal predecessors, (10039), 3019 states have call successors, (3019), 918 states have call predecessors, (3019), 930 states have return successors, (3266), 2818 states have call predecessors, (3266), 3016 states have call successors, (3266) [2022-11-19 08:04:55,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11327 states to 11327 states and 16324 transitions. [2022-11-19 08:04:55,215 INFO L78 Accepts]: Start accepts. Automaton has 11327 states and 16324 transitions. Word has length 130 [2022-11-19 08:04:55,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:55,216 INFO L495 AbstractCegarLoop]: Abstraction has 11327 states and 16324 transitions. [2022-11-19 08:04:55,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 08:04:55,216 INFO L276 IsEmpty]: Start isEmpty. Operand 11327 states and 16324 transitions. [2022-11-19 08:04:55,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-19 08:04:55,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:55,223 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:55,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:04:55,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-19 08:04:55,434 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:04:55,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:55,436 INFO L85 PathProgramCache]: Analyzing trace with hash -36402118, now seen corresponding path program 1 times [2022-11-19 08:04:55,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:55,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566414467] [2022-11-19 08:04:55,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:55,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:56,303 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-19 08:04:56,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:56,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566414467] [2022-11-19 08:04:56,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566414467] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:04:56,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706549063] [2022-11-19 08:04:56,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:56,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:56,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:04:56,305 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:04:56,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 08:04:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:57,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 2803 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 08:04:57,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:04:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-19 08:04:57,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:04:57,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706549063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:57,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:04:57,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-19 08:04:57,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053313572] [2022-11-19 08:04:57,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:57,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:04:57,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:57,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:04:57,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:04:57,366 INFO L87 Difference]: Start difference. First operand 11327 states and 16324 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:05:02,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:05:02,977 INFO L93 Difference]: Finished difference Result 22490 states and 32367 transitions. [2022-11-19 08:05:02,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 08:05:02,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 136 [2022-11-19 08:05:02,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:05:03,064 INFO L225 Difference]: With dead ends: 22490 [2022-11-19 08:05:03,064 INFO L226 Difference]: Without dead ends: 22474 [2022-11-19 08:05:03,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-19 08:05:03,074 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1732 mSDsluCounter, 3265 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 4907 SdHoareTripleChecker+Invalid, 2606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:05:03,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1763 Valid, 4907 Invalid, 2606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-19 08:05:03,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22474 states. [2022-11-19 08:05:05,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22474 to 21979. [2022-11-19 08:05:05,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21979 states, 14295 states have (on average 1.3597761455054216) internal successors, (19438), 15136 states have internal predecessors, (19438), 5878 states have call successors, (5878), 1774 states have call predecessors, (5878), 1805 states have return successors, (6232), 5491 states have call predecessors, (6232), 5875 states have call successors, (6232) [2022-11-19 08:05:05,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21979 states to 21979 states and 31548 transitions. [2022-11-19 08:05:05,322 INFO L78 Accepts]: Start accepts. Automaton has 21979 states and 31548 transitions. Word has length 136 [2022-11-19 08:05:05,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:05:05,322 INFO L495 AbstractCegarLoop]: Abstraction has 21979 states and 31548 transitions. [2022-11-19 08:05:05,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:05:05,323 INFO L276 IsEmpty]: Start isEmpty. Operand 21979 states and 31548 transitions. [2022-11-19 08:05:05,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-19 08:05:05,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:05:05,330 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:05:05,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-19 08:05:05,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-19 08:05:05,539 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:05:05,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:05:05,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1982312844, now seen corresponding path program 1 times [2022-11-19 08:05:05,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:05:05,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920063402] [2022-11-19 08:05:05,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:05,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:05:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:06,171 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-19 08:05:06,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:05:06,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920063402] [2022-11-19 08:05:06,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920063402] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:05:06,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815802264] [2022-11-19 08:05:06,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:06,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:05:06,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:05:06,174 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:05:06,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 08:05:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:07,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 3137 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 08:05:07,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:05:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-19 08:05:07,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:05:07,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815802264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:05:07,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:05:07,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-19 08:05:07,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212511521] [2022-11-19 08:05:07,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:05:07,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:05:07,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:05:07,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:05:07,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:05:07,274 INFO L87 Difference]: Start difference. First operand 21979 states and 31548 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:05:12,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:05:12,647 INFO L93 Difference]: Finished difference Result 29845 states and 42846 transitions. [2022-11-19 08:05:12,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:05:12,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 142 [2022-11-19 08:05:12,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:05:12,767 INFO L225 Difference]: With dead ends: 29845 [2022-11-19 08:05:12,767 INFO L226 Difference]: Without dead ends: 29834 [2022-11-19 08:05:12,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:05:12,782 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 1826 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 3685 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:05:12,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 3685 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1545 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-19 08:05:12,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29834 states. [2022-11-19 08:05:15,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29834 to 29385. [2022-11-19 08:05:15,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29385 states, 19073 states have (on average 1.3582551250458763) internal successors, (25906), 20188 states have internal predecessors, (25906), 7892 states have call successors, (7892), 2376 states have call predecessors, (7892), 2419 states have return successors, (8314), 7391 states have call predecessors, (8314), 7889 states have call successors, (8314) [2022-11-19 08:05:15,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29385 states to 29385 states and 42112 transitions. [2022-11-19 08:05:15,405 INFO L78 Accepts]: Start accepts. Automaton has 29385 states and 42112 transitions. Word has length 142 [2022-11-19 08:05:15,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:05:15,406 INFO L495 AbstractCegarLoop]: Abstraction has 29385 states and 42112 transitions. [2022-11-19 08:05:15,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:05:15,406 INFO L276 IsEmpty]: Start isEmpty. Operand 29385 states and 42112 transitions. [2022-11-19 08:05:15,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-19 08:05:15,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:05:15,415 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:05:15,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 08:05:15,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-19 08:05:15,625 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:05:15,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:05:15,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1902325003, now seen corresponding path program 1 times [2022-11-19 08:05:15,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:05:15,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41924766] [2022-11-19 08:05:15,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:15,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:05:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:16,437 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-19 08:05:16,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:05:16,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41924766] [2022-11-19 08:05:16,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41924766] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:05:16,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489597089] [2022-11-19 08:05:16,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:16,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:05:16,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:05:16,439 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:05:16,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 08:05:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:17,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 2994 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 08:05:17,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:05:17,796 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-19 08:05:17,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:05:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-19 08:05:17,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489597089] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:05:17,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1727231069] [2022-11-19 08:05:18,004 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2022-11-19 08:05:18,005 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:05:18,008 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:05:18,014 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:05:18,014 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:05:22,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:22,633 INFO L217 Elim1Store]: Index analysis took 335 ms [2022-11-19 08:05:47,002 WARN L233 SmtUtils]: Spent 24.30s on a formula simplification. DAG size of input: 1974 DAG size of output: 1077 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 08:05:47,005 INFO L321 Elim1Store]: treesize reduction 3222, result has 33.3 percent of original size [2022-11-19 08:05:47,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 182 select indices, 182 select index equivalence classes, 16292 disjoint index pairs (out of 16471 index pairs), introduced 182 new quantified variables, introduced 358 case distinctions, treesize of input 917 treesize of output 2173 [2022-11-19 08:05:50,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:50,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 180 select indices, 180 select index equivalence classes, 16291 disjoint index pairs (out of 16110 index pairs), introduced 180 new quantified variables, introduced 0 case distinctions, treesize of input 907 treesize of output 1446 [2022-11-19 08:06:09,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:09,362 INFO L217 Elim1Store]: Index analysis took 304 ms [2022-11-19 08:06:09,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 442 select indices, 442 select index equivalence classes, 5592 disjoint index pairs (out of 97461 index pairs), introduced 442 new quantified variables, introduced 0 case distinctions, treesize of input 3203 treesize of output 1327 [2022-11-19 08:06:10,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:10,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 182 select indices, 182 select index equivalence classes, 16471 disjoint index pairs (out of 16471 index pairs), introduced 182 new quantified variables, introduced 0 case distinctions, treesize of input 911 treesize of output 547 [2022-11-19 08:06:11,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:11,440 INFO L217 Elim1Store]: Index analysis took 131 ms [2022-11-19 08:06:11,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 181 select indices, 181 select index equivalence classes, 16291 disjoint index pairs (out of 16290 index pairs), introduced 181 new quantified variables, introduced 0 case distinctions, treesize of input 906 treesize of output 544 [2022-11-19 08:06:25,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:25,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 181 select indices, 181 select index equivalence classes, 16291 disjoint index pairs (out of 16290 index pairs), introduced 181 new quantified variables, introduced 0 case distinctions, treesize of input 906 treesize of output 544 [2022-11-19 08:06:26,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:26,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:27,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:27,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:27,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:27,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:27,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:27,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:27,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:27,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:27,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:27,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:27,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:27,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:27,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:27,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:27,075 INFO L217 Elim1Store]: Index analysis took 284 ms [2022-11-19 08:06:27,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 442 select indices, 442 select index equivalence classes, 5592 disjoint index pairs (out of 97461 index pairs), introduced 442 new quantified variables, introduced 0 case distinctions, treesize of input 3203 treesize of output 1327 [2022-11-19 08:06:28,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:28,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 182 select indices, 182 select index equivalence classes, 16471 disjoint index pairs (out of 16471 index pairs), introduced 182 new quantified variables, introduced 0 case distinctions, treesize of input 911 treesize of output 547 [2022-11-19 08:06:30,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 08:06:30,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 08:06:30,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 08:06:30,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 63 [2022-11-19 08:06:30,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 63 [2022-11-19 08:06:31,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 65 [2022-11-19 08:06:31,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 08:06:31,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 08:06:31,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 08:06:31,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:31,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 43 select indices, 43 select index equivalence classes, 532 disjoint index pairs (out of 903 index pairs), introduced 43 new quantified variables, introduced 0 case distinctions, treesize of input 386 treesize of output 130 [2022-11-19 08:06:32,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:32,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 43 select indices, 43 select index equivalence classes, 532 disjoint index pairs (out of 903 index pairs), introduced 43 new quantified variables, introduced 0 case distinctions, treesize of input 386 treesize of output 130 [2022-11-19 08:06:33,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 43 select indices, 43 select index equivalence classes, 532 disjoint index pairs (out of 903 index pairs), introduced 43 new quantified variables, introduced 0 case distinctions, treesize of input 386 treesize of output 130 [2022-11-19 08:06:33,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:33,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 43 select indices, 43 select index equivalence classes, 532 disjoint index pairs (out of 903 index pairs), introduced 43 new quantified variables, introduced 0 case distinctions, treesize of input 386 treesize of output 130 [2022-11-19 08:06:46,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 08:06:46,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 08:06:46,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 08:06:46,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 08:06:46,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:06:46,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:06:46,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:06:46,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:06:50,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 08:06:50,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 08:06:50,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 08:06:50,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 08:06:50,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 08:06:50,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 08:06:50,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 08:06:50,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 08:06:50,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 08:06:50,374 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 08:06:50,376 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 08:06:50,378 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 08:06:50,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:50,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-19 08:06:50,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:50,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-19 08:06:50,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:50,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:50,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:50,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:50,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2022-11-19 08:06:52,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:52,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:52,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:52,879 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:06:52,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:06:52,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:52,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:52,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:52,939 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:06:52,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:06:53,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:53,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:53,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:53,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:53,051 INFO L321 Elim1Store]: treesize reduction 83, result has 18.6 percent of original size [2022-11-19 08:06:53,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 66 treesize of output 72 [2022-11-19 08:06:55,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:55,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:55,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:55,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:55,907 INFO L321 Elim1Store]: treesize reduction 83, result has 18.6 percent of original size [2022-11-19 08:06:55,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 821 treesize of output 785 [2022-11-19 08:06:56,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:56,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:56,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:56,040 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:06:56,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 791 treesize of output 780 [2022-11-19 08:06:56,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:56,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:56,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:56,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:06:56,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 791 treesize of output 780 [2022-11-19 08:07:11,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 08:07:11,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 08:07:11,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 08:07:11,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 08:07:11,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 08:07:11,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 08:07:11,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 08:07:11,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:07:11,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 08:07:11,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 27 [2022-11-19 08:07:12,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:07:12,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:07:12,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:07:12,304 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:07:12,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 1184 treesize of output 1145 [2022-11-19 08:07:12,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:07:12,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:07:12,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:07:12,420 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:07:12,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1098 treesize of output 1044 [2022-11-19 08:07:12,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:07:12,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:07:12,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:07:12,535 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:07:12,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1050 treesize of output 996 [2022-11-19 08:07:25,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 08:07:25,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-19 08:07:25,308 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:07:25,313 INFO L158 Benchmark]: Toolchain (without parser) took 211816.80ms. Allocated memory was 123.7MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 75.1MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2022-11-19 08:07:25,313 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 123.7MB. Free memory is still 102.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:07:25,313 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2329.99ms. Allocated memory was 123.7MB in the beginning and 163.6MB in the end (delta: 39.8MB). Free memory was 74.9MB in the beginning and 103.4MB in the end (delta: -28.5MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. [2022-11-19 08:07:25,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 220.74ms. Allocated memory is still 163.6MB. Free memory was 103.4MB in the beginning and 88.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 08:07:25,314 INFO L158 Benchmark]: Boogie Preprocessor took 260.40ms. Allocated memory is still 163.6MB. Free memory was 87.9MB in the beginning and 71.9MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 08:07:25,314 INFO L158 Benchmark]: RCFGBuilder took 3751.63ms. Allocated memory was 163.6MB in the beginning and 278.9MB in the end (delta: 115.3MB). Free memory was 71.9MB in the beginning and 146.4MB in the end (delta: -74.5MB). Peak memory consumption was 114.5MB. Max. memory is 16.1GB. [2022-11-19 08:07:25,315 INFO L158 Benchmark]: TraceAbstraction took 205242.74ms. Allocated memory was 278.9MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 146.4MB in the beginning and 1.1GB in the end (delta: -978.0MB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2022-11-19 08:07:25,316 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 123.7MB. Free memory is still 102.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2329.99ms. Allocated memory was 123.7MB in the beginning and 163.6MB in the end (delta: 39.8MB). Free memory was 74.9MB in the beginning and 103.4MB in the end (delta: -28.5MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 220.74ms. Allocated memory is still 163.6MB. Free memory was 103.4MB in the beginning and 88.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 260.40ms. Allocated memory is still 163.6MB. Free memory was 87.9MB in the beginning and 71.9MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * RCFGBuilder took 3751.63ms. Allocated memory was 163.6MB in the beginning and 278.9MB in the end (delta: 115.3MB). Free memory was 71.9MB in the beginning and 146.4MB in the end (delta: -74.5MB). Peak memory consumption was 114.5MB. Max. memory is 16.1GB. * TraceAbstraction took 205242.74ms. Allocated memory was 278.9MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 146.4MB in the beginning and 1.1GB in the end (delta: -978.0MB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-19 08:07:25,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS --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 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be --- 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-8393723 [2022-11-19 08:07:27,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:07:27,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:07:27,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:07:27,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:07:27,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:07:27,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:07:27,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:07:27,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:07:27,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:07:27,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:07:27,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:07:27,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:07:27,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:07:27,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:07:27,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:07:27,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:07:27,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:07:27,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:07:27,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:07:27,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:07:27,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:07:27,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:07:27,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:07:27,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:07:27,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:07:27,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:07:27,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:07:27,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:07:27,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:07:27,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:07:27,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:07:27,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:07:27,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:07:27,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:07:27,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:07:27,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:07:27,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:07:27,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:07:27,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:07:27,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:07:27,811 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 08:07:27,855 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:07:27,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:07:27,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:07:27,856 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:07:27,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:07:27,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:07:27,857 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:07:27,857 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:07:27,857 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:07:27,857 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:07:27,857 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:07:27,857 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:07:27,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:07:27,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:07:27,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:07:27,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:07:27,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:07:27,859 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 08:07:27,859 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 08:07:27,859 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 08:07:27,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:07:27,860 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:07:27,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:07:27,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:07:27,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 08:07:27,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:07:27,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:07:27,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:07:27,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:07:27,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:07:27,861 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 08:07:27,861 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 08:07:27,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:07:27,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:07:27,862 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 08:07:27,862 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_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be [2022-11-19 08:07:28,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:07:28,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:07:28,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:07:28,286 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:07:28,287 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:07:28,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-11-19 08:07:28,374 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/data/d21145308/6cdf7fecd9c44d74a2c308d4b7936a2c/FLAGa687fdffa [2022-11-19 08:07:29,344 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:07:29,344 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-11-19 08:07:29,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/data/d21145308/6cdf7fecd9c44d74a2c308d4b7936a2c/FLAGa687fdffa [2022-11-19 08:07:29,783 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/data/d21145308/6cdf7fecd9c44d74a2c308d4b7936a2c [2022-11-19 08:07:29,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:07:29,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:07:29,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:07:29,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:07:29,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:07:29,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:07:29" (1/1) ... [2022-11-19 08:07:29,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b89782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:29, skipping insertion in model container [2022-11-19 08:07:29,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:07:29" (1/1) ... [2022-11-19 08:07:29,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:07:29,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:07:31,060 WARN L234 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_fe321c91-8cf7-47f8-8316-32de497b6e13/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2022-11-19 08:07:31,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:07:31,687 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 08:07:31,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:07:31,933 WARN L234 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_fe321c91-8cf7-47f8-8316-32de497b6e13/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2022-11-19 08:07:32,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:07:32,134 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:07:32,359 WARN L234 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_fe321c91-8cf7-47f8-8316-32de497b6e13/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2022-11-19 08:07:32,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:07:32,633 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:07:32,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:32 WrapperNode [2022-11-19 08:07:32,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:07:32,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:07:32,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:07:32,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:07:32,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:32" (1/1) ... [2022-11-19 08:07:32,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:32" (1/1) ... [2022-11-19 08:07:32,836 INFO L138 Inliner]: procedures = 189, calls = 1356, calls flagged for inlining = 82, calls inlined = 66, statements flattened = 2437 [2022-11-19 08:07:32,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:07:32,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:07:32,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:07:32,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:07:32,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:32" (1/1) ... [2022-11-19 08:07:32,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:32" (1/1) ... [2022-11-19 08:07:32,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:32" (1/1) ... [2022-11-19 08:07:32,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:32" (1/1) ... [2022-11-19 08:07:32,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:32" (1/1) ... [2022-11-19 08:07:32,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:32" (1/1) ... [2022-11-19 08:07:32,967 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:32" (1/1) ... [2022-11-19 08:07:32,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:32" (1/1) ... [2022-11-19 08:07:33,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:07:33,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:07:33,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:07:33,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:07:33,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:32" (1/1) ... [2022-11-19 08:07:33,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:07:33,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:07:33,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:07:33,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:07:33,164 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_reset_device [2022-11-19 08:07:33,164 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_reset_device [2022-11-19 08:07:33,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-19 08:07:33,165 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_resume [2022-11-19 08:07:33,165 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_resume [2022-11-19 08:07:33,165 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 08:07:33,165 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 08:07:33,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_12 [2022-11-19 08:07:33,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_12 [2022-11-19 08:07:33,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-19 08:07:33,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 08:07:33,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 08:07:33,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-19 08:07:33,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 08:07:33,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:07:33,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:07:33,167 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-19 08:07:33,167 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-19 08:07:33,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-19 08:07:33,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-19 08:07:33,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 08:07:33,168 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 08:07:33,168 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-19 08:07:33,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-19 08:07:33,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:07:33,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:07:33,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-19 08:07:33,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-19 08:07:33,169 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb_fwload [2022-11-19 08:07:33,170 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb_fwload [2022-11-19 08:07:33,170 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-19 08:07:33,171 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-19 08:07:33,171 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-11-19 08:07:33,171 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-11-19 08:07:33,171 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb [2022-11-19 08:07:33,171 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb [2022-11-19 08:07:33,172 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive_fwload [2022-11-19 08:07:33,172 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive_fwload [2022-11-19 08:07:33,172 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:07:33,172 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:07:33,172 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_send_fw_pkt [2022-11-19 08:07:33,172 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_send_fw_pkt [2022-11-19 08:07:33,173 INFO L130 BoogieDeclarations]: Found specification of procedure __if_usb_submit_rx_urb [2022-11-19 08:07:33,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __if_usb_submit_rx_urb [2022-11-19 08:07:33,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 08:07:33,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 08:07:33,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-19 08:07:33,174 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_free [2022-11-19 08:07:33,176 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_free [2022-11-19 08:07:33,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-19 08:07:33,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-19 08:07:33,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-19 08:07:33,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:07:33,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:07:33,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:07:33,178 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:07:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 08:07:33,178 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 08:07:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:07:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-11-19 08:07:33,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-11-19 08:07:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_disconnect [2022-11-19 08:07:33,179 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_disconnect [2022-11-19 08:07:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure usb_tx_block [2022-11-19 08:07:33,180 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_tx_block [2022-11-19 08:07:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:07:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-11-19 08:07:33,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-11-19 08:07:33,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_9 [2022-11-19 08:07:33,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_9 [2022-11-19 08:07:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 08:07:33,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 08:07:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:07:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:07:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 08:07:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-19 08:07:33,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-19 08:07:33,183 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 08:07:33,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 08:07:33,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-19 08:07:33,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_8 [2022-11-19 08:07:33,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_8 [2022-11-19 08:07:33,184 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-19 08:07:33,184 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-19 08:07:33,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:07:33,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2022-11-19 08:07:33,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2022-11-19 08:07:33,186 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-19 08:07:33,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-19 08:07:33,187 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-11-19 08:07:33,187 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-11-19 08:07:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2022-11-19 08:07:33,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2022-11-19 08:07:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-19 08:07:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-19 08:07:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-19 08:07:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:07:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 08:07:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:07:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-19 08:07:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 08:07:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-19 08:07:33,190 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-19 08:07:33,190 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-19 08:07:33,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-19 08:07:33,190 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_remove_card [2022-11-19 08:07:33,191 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_remove_card [2022-11-19 08:07:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 08:07:33,191 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 08:07:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-19 08:07:33,195 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-19 08:07:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive [2022-11-19 08:07:33,195 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive [2022-11-19 08:07:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-19 08:07:33,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-19 08:07:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-19 08:07:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-19 08:07:33,199 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-19 08:07:33,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 08:07:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 08:07:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:07:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:07:33,858 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:07:33,863 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:07:36,280 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:07:42,990 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-11-19 08:07:45,420 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:07:45,443 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:07:45,453 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 08:07:45,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:45 BoogieIcfgContainer [2022-11-19 08:07:45,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:07:45,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:07:45,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:07:45,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:07:45,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:07:29" (1/3) ... [2022-11-19 08:07:45,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147be83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:45, skipping insertion in model container [2022-11-19 08:07:45,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:32" (2/3) ... [2022-11-19 08:07:45,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147be83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:45, skipping insertion in model container [2022-11-19 08:07:45,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:45" (3/3) ... [2022-11-19 08:07:45,468 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-11-19 08:07:45,487 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:07:45,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:07:45,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:07:45,578 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;@24263555, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:07:45,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:07:45,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 750 states, 527 states have (on average 1.3567362428842504) internal successors, (715), 557 states have internal predecessors, (715), 178 states have call successors, (178), 45 states have call predecessors, (178), 43 states have return successors, (172), 166 states have call predecessors, (172), 172 states have call successors, (172) [2022-11-19 08:07:45,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 08:07:45,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:45,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:45,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:07:45,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:45,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1782780063, now seen corresponding path program 1 times [2022-11-19 08:07:45,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:07:45,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856259631] [2022-11-19 08:07:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:45,620 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 [2022-11-19 08:07:45,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:07:45,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:07:45,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:07:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:46,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:07:46,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:07:46,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:07:46,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:07:46,517 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:07:46,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856259631] [2022-11-19 08:07:46,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856259631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:46,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:07:46,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:07:46,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272045142] [2022-11-19 08:07:46,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:46,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:07:46,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:07:46,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:07:46,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:07:46,570 INFO L87 Difference]: Start difference. First operand has 750 states, 527 states have (on average 1.3567362428842504) internal successors, (715), 557 states have internal predecessors, (715), 178 states have call successors, (178), 45 states have call predecessors, (178), 43 states have return successors, (172), 166 states have call predecessors, (172), 172 states have call successors, (172) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 08:07:46,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:46,859 INFO L93 Difference]: Finished difference Result 1498 states and 2172 transitions. [2022-11-19 08:07:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:07:46,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2022-11-19 08:07:46,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:46,888 INFO L225 Difference]: With dead ends: 1498 [2022-11-19 08:07:46,888 INFO L226 Difference]: Without dead ends: 735 [2022-11-19 08:07:46,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:07:46,906 INFO L413 NwaCegarLoop]: 1055 mSDtfsCounter, 2 mSDsluCounter, 2108 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:46,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3163 Invalid, 7 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:07:46,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-11-19 08:07:47,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2022-11-19 08:07:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 520 states have (on average 1.3403846153846153) internal successors, (697), 542 states have internal predecessors, (697), 172 states have call successors, (172), 43 states have call predecessors, (172), 42 states have return successors, (167), 161 states have call predecessors, (167), 167 states have call successors, (167) [2022-11-19 08:07:47,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1036 transitions. [2022-11-19 08:07:47,042 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1036 transitions. Word has length 29 [2022-11-19 08:07:47,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:47,044 INFO L495 AbstractCegarLoop]: Abstraction has 735 states and 1036 transitions. [2022-11-19 08:07:47,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 08:07:47,045 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1036 transitions. [2022-11-19 08:07:47,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 08:07:47,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:47,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:47,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:07:47,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:07:47,267 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:07:47,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:47,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1380731894, now seen corresponding path program 1 times [2022-11-19 08:07:47,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:07:47,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482149073] [2022-11-19 08:07:47,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:47,271 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 [2022-11-19 08:07:47,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:07:47,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:07:47,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:07:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:48,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:07:48,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:07:48,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:07:48,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:07:48,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:07:48,328 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:07:48,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482149073] [2022-11-19 08:07:48,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482149073] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:07:48,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2127918220] [2022-11-19 08:07:48,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:48,329 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:07:48,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:07:48,334 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:07:48,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 08:07:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:49,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:07:49,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:07:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:07:49,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:07:49,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2127918220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:49,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:07:49,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-19 08:07:49,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854261415] [2022-11-19 08:07:49,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:49,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:07:49,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:07:49,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:07:49,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:07:49,271 INFO L87 Difference]: Start difference. First operand 735 states and 1036 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 08:07:49,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:49,506 INFO L93 Difference]: Finished difference Result 2156 states and 3050 transitions. [2022-11-19 08:07:49,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:07:49,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2022-11-19 08:07:49,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:49,524 INFO L225 Difference]: With dead ends: 2156 [2022-11-19 08:07:49,538 INFO L226 Difference]: Without dead ends: 1434 [2022-11-19 08:07:49,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:07:49,558 INFO L413 NwaCegarLoop]: 1208 mSDtfsCounter, 992 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:49,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 2224 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:07:49,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2022-11-19 08:07:49,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1434. [2022-11-19 08:07:49,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1014 states have (on average 1.3402366863905326) internal successors, (1359), 1054 states have internal predecessors, (1359), 336 states have call successors, (336), 84 states have call predecessors, (336), 83 states have return successors, (331), 319 states have call predecessors, (331), 331 states have call successors, (331) [2022-11-19 08:07:49,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 2026 transitions. [2022-11-19 08:07:49,707 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 2026 transitions. Word has length 30 [2022-11-19 08:07:49,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:49,707 INFO L495 AbstractCegarLoop]: Abstraction has 1434 states and 2026 transitions. [2022-11-19 08:07:49,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 08:07:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 2026 transitions. [2022-11-19 08:07:49,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-19 08:07:49,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:49,712 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:49,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:07:49,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:07:50,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 08:07:50,127 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:07:50,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:50,127 INFO L85 PathProgramCache]: Analyzing trace with hash -683078213, now seen corresponding path program 1 times [2022-11-19 08:07:50,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:07:50,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311400853] [2022-11-19 08:07:50,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:50,129 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 [2022-11-19 08:07:50,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:07:50,132 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:07:50,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-19 08:07:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:50,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:07:50,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:07:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:07:50,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:07:51,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:07:51,191 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:07:51,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311400853] [2022-11-19 08:07:51,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311400853] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:07:51,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2076803952] [2022-11-19 08:07:51,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:51,192 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:07:51,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:07:51,194 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:07:51,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-19 08:07:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:52,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:07:52,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:07:52,100 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 08:07:52,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:07:52,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2076803952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:52,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:07:52,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-19 08:07:52,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519914710] [2022-11-19 08:07:52,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:52,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:07:52,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:07:52,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:07:52,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:07:52,102 INFO L87 Difference]: Start difference. First operand 1434 states and 2026 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:07:52,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:52,299 INFO L93 Difference]: Finished difference Result 1460 states and 2058 transitions. [2022-11-19 08:07:52,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:07:52,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-19 08:07:52,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:52,311 INFO L225 Difference]: With dead ends: 1460 [2022-11-19 08:07:52,311 INFO L226 Difference]: Without dead ends: 1447 [2022-11-19 08:07:52,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:07:52,320 INFO L413 NwaCegarLoop]: 1050 mSDtfsCounter, 1030 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:52,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 1066 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:07:52,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2022-11-19 08:07:52,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1434. [2022-11-19 08:07:52,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1014 states have (on average 1.339250493096647) internal successors, (1358), 1054 states have internal predecessors, (1358), 336 states have call successors, (336), 84 states have call predecessors, (336), 83 states have return successors, (331), 319 states have call predecessors, (331), 331 states have call successors, (331) [2022-11-19 08:07:52,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 2025 transitions. [2022-11-19 08:07:52,476 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 2025 transitions. Word has length 40 [2022-11-19 08:07:52,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:52,477 INFO L495 AbstractCegarLoop]: Abstraction has 1434 states and 2025 transitions. [2022-11-19 08:07:52,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:07:52,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 2025 transitions. [2022-11-19 08:07:52,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-19 08:07:52,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:52,481 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:52,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:07:52,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:07:52,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:07:52,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:07:52,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:52,889 INFO L85 PathProgramCache]: Analyzing trace with hash -625819911, now seen corresponding path program 1 times [2022-11-19 08:07:52,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:07:52,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700034532] [2022-11-19 08:07:52,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:52,890 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 [2022-11-19 08:07:52,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:07:52,891 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:07:52,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-19 08:07:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:53,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:07:53,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:07:53,682 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:07:53,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:07:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:07:53,883 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:07:53,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700034532] [2022-11-19 08:07:53,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700034532] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:07:53,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2015205258] [2022-11-19 08:07:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:53,884 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:07:53,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:07:53,885 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:07:53,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-19 08:07:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:54,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:07:54,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:07:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 08:07:55,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:07:55,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2015205258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:55,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:07:55,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-19 08:07:55,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379571848] [2022-11-19 08:07:55,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:55,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:07:55,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:07:55,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:07:55,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:07:55,202 INFO L87 Difference]: Start difference. First operand 1434 states and 2025 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:07:55,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:55,560 INFO L93 Difference]: Finished difference Result 4261 states and 6202 transitions. [2022-11-19 08:07:55,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:07:55,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-19 08:07:55,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:55,578 INFO L225 Difference]: With dead ends: 4261 [2022-11-19 08:07:55,578 INFO L226 Difference]: Without dead ends: 2847 [2022-11-19 08:07:55,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:07:55,586 INFO L413 NwaCegarLoop]: 1285 mSDtfsCounter, 1026 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:55,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 2298 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:07:55,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2022-11-19 08:07:55,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2837. [2022-11-19 08:07:55,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2837 states, 2008 states have (on average 1.3386454183266931) internal successors, (2688), 2084 states have internal predecessors, (2688), 664 states have call successors, (664), 165 states have call predecessors, (664), 164 states have return successors, (721), 635 states have call predecessors, (721), 659 states have call successors, (721) [2022-11-19 08:07:55,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2837 states to 2837 states and 4073 transitions. [2022-11-19 08:07:55,813 INFO L78 Accepts]: Start accepts. Automaton has 2837 states and 4073 transitions. Word has length 40 [2022-11-19 08:07:55,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:55,814 INFO L495 AbstractCegarLoop]: Abstraction has 2837 states and 4073 transitions. [2022-11-19 08:07:55,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:07:55,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2837 states and 4073 transitions. [2022-11-19 08:07:55,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-19 08:07:55,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:55,816 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:55,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2022-11-19 08:07:56,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-19 08:07:56,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:07:56,225 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:07:56,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:56,225 INFO L85 PathProgramCache]: Analyzing trace with hash 2074015851, now seen corresponding path program 1 times [2022-11-19 08:07:56,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:07:56,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447760449] [2022-11-19 08:07:56,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:56,227 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 [2022-11-19 08:07:56,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:07:56,228 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:07:56,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:07:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:56,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:07:56,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:07:56,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:07:56,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:07:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:07:57,153 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:07:57,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447760449] [2022-11-19 08:07:57,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447760449] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:07:57,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1911253492] [2022-11-19 08:07:57,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:57,154 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:07:57,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:07:57,155 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:07:57,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-19 08:07:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:57,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 08:07:57,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:07:58,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 08:07:58,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:07:58,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1911253492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:58,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:07:58,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-19 08:07:58,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271276451] [2022-11-19 08:07:58,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:58,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:07:58,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:07:58,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:07:58,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:07:58,419 INFO L87 Difference]: Start difference. First operand 2837 states and 4073 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:07:59,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:59,002 INFO L93 Difference]: Finished difference Result 8462 states and 12588 transitions. [2022-11-19 08:07:59,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:07:59,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-11-19 08:07:59,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:59,052 INFO L225 Difference]: With dead ends: 8462 [2022-11-19 08:07:59,053 INFO L226 Difference]: Without dead ends: 5645 [2022-11-19 08:07:59,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:07:59,067 INFO L413 NwaCegarLoop]: 1246 mSDtfsCounter, 1016 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:59,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 2256 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:07:59,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5645 states. [2022-11-19 08:07:59,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5645 to 5636. [2022-11-19 08:07:59,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5636 states, 3989 states have (on average 1.3356731010278264) internal successors, (5328), 4137 states have internal predecessors, (5328), 1320 states have call successors, (1320), 327 states have call predecessors, (1320), 326 states have return successors, (1589), 1267 states have call predecessors, (1589), 1315 states have call successors, (1589) [2022-11-19 08:07:59,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5636 states to 5636 states and 8237 transitions. [2022-11-19 08:07:59,552 INFO L78 Accepts]: Start accepts. Automaton has 5636 states and 8237 transitions. Word has length 41 [2022-11-19 08:07:59,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:59,553 INFO L495 AbstractCegarLoop]: Abstraction has 5636 states and 8237 transitions. [2022-11-19 08:07:59,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:07:59,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5636 states and 8237 transitions. [2022-11-19 08:07:59,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-19 08:07:59,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:59,554 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:59,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:07:59,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-19 08:07:59,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 08:07:59,975 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:07:59,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:59,975 INFO L85 PathProgramCache]: Analyzing trace with hash -130416580, now seen corresponding path program 1 times [2022-11-19 08:07:59,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:07:59,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126260440] [2022-11-19 08:07:59,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:59,977 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 [2022-11-19 08:07:59,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:07:59,978 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:07:59,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-19 08:08:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:00,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:08:00,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:00,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:08:00,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:08:00,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:08:00,804 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:08:00,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126260440] [2022-11-19 08:08:00,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126260440] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:08:00,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1755410538] [2022-11-19 08:08:00,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:00,804 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:08:00,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:08:00,807 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:08:00,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-19 08:08:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:01,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:08:01,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 08:08:01,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:08:01,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1755410538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:08:01,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:08:01,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-19 08:08:01,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515854849] [2022-11-19 08:08:01,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:08:01,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:08:01,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:08:01,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:08:01,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:08:01,795 INFO L87 Difference]: Start difference. First operand 5636 states and 8237 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:08:02,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:08:02,223 INFO L93 Difference]: Finished difference Result 5643 states and 8243 transitions. [2022-11-19 08:08:02,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:08:02,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-19 08:08:02,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:08:02,261 INFO L225 Difference]: With dead ends: 5643 [2022-11-19 08:08:02,261 INFO L226 Difference]: Without dead ends: 5640 [2022-11-19 08:08:02,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:08:02,267 INFO L413 NwaCegarLoop]: 1248 mSDtfsCounter, 1013 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:08:02,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 2257 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:08:02,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5640 states. [2022-11-19 08:08:02,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5640 to 5637. [2022-11-19 08:08:02,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5637 states, 3990 states have (on average 1.3355889724310777) internal successors, (5329), 4138 states have internal predecessors, (5329), 1320 states have call successors, (1320), 327 states have call predecessors, (1320), 326 states have return successors, (1589), 1267 states have call predecessors, (1589), 1315 states have call successors, (1589) [2022-11-19 08:08:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5637 states to 5637 states and 8238 transitions. [2022-11-19 08:08:02,885 INFO L78 Accepts]: Start accepts. Automaton has 5637 states and 8238 transitions. Word has length 42 [2022-11-19 08:08:02,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:08:02,887 INFO L495 AbstractCegarLoop]: Abstraction has 5637 states and 8238 transitions. [2022-11-19 08:08:02,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:08:02,888 INFO L276 IsEmpty]: Start isEmpty. Operand 5637 states and 8238 transitions. [2022-11-19 08:08:02,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-19 08:08:02,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:08:02,892 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:08:02,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-19 08:08:03,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2022-11-19 08:08:03,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 08:08:03,307 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:08:03,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:08:03,307 INFO L85 PathProgramCache]: Analyzing trace with hash 251659662, now seen corresponding path program 1 times [2022-11-19 08:08:03,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:08:03,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617561995] [2022-11-19 08:08:03,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:03,309 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 [2022-11-19 08:08:03,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:08:03,311 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:08:03,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-19 08:08:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:03,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:08:03,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:04,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:08:04,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:08:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:08:04,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:08:04,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617561995] [2022-11-19 08:08:04,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617561995] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:08:04,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [32704941] [2022-11-19 08:08:04,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:04,217 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:08:04,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:08:04,219 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:08:04,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-19 08:08:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:05,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:08:05,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 08:08:05,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:08:05,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [32704941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:08:05,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:08:05,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-19 08:08:05,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782385413] [2022-11-19 08:08:05,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:08:05,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:08:05,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:08:05,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:08:05,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:08:05,236 INFO L87 Difference]: Start difference. First operand 5637 states and 8238 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:08:05,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:08:05,666 INFO L93 Difference]: Finished difference Result 5639 states and 8239 transitions. [2022-11-19 08:08:05,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:08:05,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-11-19 08:08:05,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:08:05,703 INFO L225 Difference]: With dead ends: 5639 [2022-11-19 08:08:05,704 INFO L226 Difference]: Without dead ends: 5636 [2022-11-19 08:08:05,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:08:05,710 INFO L413 NwaCegarLoop]: 1032 mSDtfsCounter, 996 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:08:05,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1032 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:08:05,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5636 states. [2022-11-19 08:08:06,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5636 to 5636. [2022-11-19 08:08:06,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5636 states, 3990 states have (on average 1.3353383458646617) internal successors, (5328), 4137 states have internal predecessors, (5328), 1319 states have call successors, (1319), 327 states have call predecessors, (1319), 326 states have return successors, (1589), 1267 states have call predecessors, (1589), 1315 states have call successors, (1589) [2022-11-19 08:08:06,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5636 states to 5636 states and 8236 transitions. [2022-11-19 08:08:06,251 INFO L78 Accepts]: Start accepts. Automaton has 5636 states and 8236 transitions. Word has length 43 [2022-11-19 08:08:06,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:08:06,251 INFO L495 AbstractCegarLoop]: Abstraction has 5636 states and 8236 transitions. [2022-11-19 08:08:06,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:08:06,252 INFO L276 IsEmpty]: Start isEmpty. Operand 5636 states and 8236 transitions. [2022-11-19 08:08:06,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 08:08:06,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:08:06,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:08:06,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-19 08:08:06,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-19 08:08:06,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 08:08:06,674 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:08:06,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:08:06,674 INFO L85 PathProgramCache]: Analyzing trace with hash -788873857, now seen corresponding path program 1 times [2022-11-19 08:08:06,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:08:06,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1376019725] [2022-11-19 08:08:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:06,675 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 [2022-11-19 08:08:06,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:08:06,676 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:08:06,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:08:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:07,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:08:07,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:07,359 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:08:07,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:08:07,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:08:07,556 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:08:07,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1376019725] [2022-11-19 08:08:07,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1376019725] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:08:07,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [678717488] [2022-11-19 08:08:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:07,556 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:08:07,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:08:07,558 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:08:07,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-19 08:08:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:08,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:08:08,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:08,521 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 08:08:08,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:08:08,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [678717488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:08:08,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:08:08,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-19 08:08:08,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409364315] [2022-11-19 08:08:08,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:08:08,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:08:08,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:08:08,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:08:08,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:08:08,523 INFO L87 Difference]: Start difference. First operand 5636 states and 8236 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:08:09,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:08:09,042 INFO L93 Difference]: Finished difference Result 5638 states and 8237 transitions. [2022-11-19 08:08:09,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:08:09,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-11-19 08:08:09,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:08:09,093 INFO L225 Difference]: With dead ends: 5638 [2022-11-19 08:08:09,093 INFO L226 Difference]: Without dead ends: 5626 [2022-11-19 08:08:09,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:08:09,098 INFO L413 NwaCegarLoop]: 1031 mSDtfsCounter, 993 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:08:09,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:08:09,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5626 states. [2022-11-19 08:08:09,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5626 to 5626. [2022-11-19 08:08:09,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5626 states, 3981 states have (on average 1.3350916855061543) internal successors, (5315), 4127 states have internal predecessors, (5315), 1318 states have call successors, (1318), 327 states have call predecessors, (1318), 326 states have return successors, (1589), 1267 states have call predecessors, (1589), 1315 states have call successors, (1589) [2022-11-19 08:08:09,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5626 states to 5626 states and 8222 transitions. [2022-11-19 08:08:09,632 INFO L78 Accepts]: Start accepts. Automaton has 5626 states and 8222 transitions. Word has length 44 [2022-11-19 08:08:09,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:08:09,633 INFO L495 AbstractCegarLoop]: Abstraction has 5626 states and 8222 transitions. [2022-11-19 08:08:09,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:08:09,633 INFO L276 IsEmpty]: Start isEmpty. Operand 5626 states and 8222 transitions. [2022-11-19 08:08:09,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-19 08:08:09,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:08:09,643 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:08:09,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2022-11-19 08:08:09,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:08:10,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:08:10,050 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:08:10,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:08:10,051 INFO L85 PathProgramCache]: Analyzing trace with hash -2116934231, now seen corresponding path program 1 times [2022-11-19 08:08:10,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:08:10,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007017370] [2022-11-19 08:08:10,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:10,053 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 [2022-11-19 08:08:10,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:08:10,054 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:08:10,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-19 08:08:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:10,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:08:10,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 08:08:10,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:08:11,132 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 08:08:11,132 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:08:11,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007017370] [2022-11-19 08:08:11,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007017370] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:08:11,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [214680380] [2022-11-19 08:08:11,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:11,133 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:08:11,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:08:11,134 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:08:11,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-19 08:08:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:12,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:08:12,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:12,160 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 08:08:12,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:08:12,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [214680380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:08:12,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:08:12,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-19 08:08:12,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885554214] [2022-11-19 08:08:12,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:08:12,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:08:12,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:08:12,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:08:12,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:08:12,164 INFO L87 Difference]: Start difference. First operand 5626 states and 8222 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 08:08:12,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:08:12,822 INFO L93 Difference]: Finished difference Result 11672 states and 17072 transitions. [2022-11-19 08:08:12,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:08:12,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 144 [2022-11-19 08:08:12,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:08:12,857 INFO L225 Difference]: With dead ends: 11672 [2022-11-19 08:08:12,858 INFO L226 Difference]: Without dead ends: 6066 [2022-11-19 08:08:12,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:08:12,886 INFO L413 NwaCegarLoop]: 1039 mSDtfsCounter, 110 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:08:12,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 2030 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:08:12,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6066 states. [2022-11-19 08:08:13,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6066 to 6042. [2022-11-19 08:08:13,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6042 states, 4324 states have (on average 1.3499074930619797) internal successors, (5837), 4502 states have internal predecessors, (5837), 1366 states have call successors, (1366), 352 states have call predecessors, (1366), 351 states have return successors, (1637), 1291 states have call predecessors, (1637), 1363 states have call successors, (1637) [2022-11-19 08:08:13,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6042 states to 6042 states and 8840 transitions. [2022-11-19 08:08:13,559 INFO L78 Accepts]: Start accepts. Automaton has 6042 states and 8840 transitions. Word has length 144 [2022-11-19 08:08:13,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:08:13,559 INFO L495 AbstractCegarLoop]: Abstraction has 6042 states and 8840 transitions. [2022-11-19 08:08:13,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 08:08:13,560 INFO L276 IsEmpty]: Start isEmpty. Operand 6042 states and 8840 transitions. [2022-11-19 08:08:13,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-19 08:08:13,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:08:13,572 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:08:13,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-19 08:08:13,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2022-11-19 08:08:13,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 08:08:13,991 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:08:13,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:08:13,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1484997384, now seen corresponding path program 1 times [2022-11-19 08:08:13,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:08:13,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557762350] [2022-11-19 08:08:13,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:13,994 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 [2022-11-19 08:08:13,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:08:13,995 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:08:13,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-19 08:08:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:14,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:08:14,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-19 08:08:14,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:08:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 08:08:15,177 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:08:15,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557762350] [2022-11-19 08:08:15,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557762350] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:08:15,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1929468791] [2022-11-19 08:08:15,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:15,178 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:08:15,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:08:15,183 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:08:15,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-19 08:08:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:16,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:08:16,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:16,257 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-19 08:08:16,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:08:16,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1929468791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:08:16,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:08:16,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-19 08:08:16,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952803643] [2022-11-19 08:08:16,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:08:16,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:08:16,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:08:16,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:08:16,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:08:16,260 INFO L87 Difference]: Start difference. First operand 6042 states and 8840 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 08:08:16,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:08:16,856 INFO L93 Difference]: Finished difference Result 12068 states and 17670 transitions. [2022-11-19 08:08:16,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:08:16,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 153 [2022-11-19 08:08:16,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:08:16,884 INFO L225 Difference]: With dead ends: 12068 [2022-11-19 08:08:16,884 INFO L226 Difference]: Without dead ends: 6050 [2022-11-19 08:08:16,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:08:16,906 INFO L413 NwaCegarLoop]: 1028 mSDtfsCounter, 0 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:08:16,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2051 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:08:16,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6050 states. [2022-11-19 08:08:17,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6050 to 6050. [2022-11-19 08:08:17,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6050 states, 4332 states have (on average 1.3492613111726686) internal successors, (5845), 4510 states have internal predecessors, (5845), 1366 states have call successors, (1366), 352 states have call predecessors, (1366), 351 states have return successors, (1637), 1291 states have call predecessors, (1637), 1363 states have call successors, (1637) [2022-11-19 08:08:17,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6050 states to 6050 states and 8848 transitions. [2022-11-19 08:08:17,540 INFO L78 Accepts]: Start accepts. Automaton has 6050 states and 8848 transitions. Word has length 153 [2022-11-19 08:08:17,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:08:17,542 INFO L495 AbstractCegarLoop]: Abstraction has 6050 states and 8848 transitions. [2022-11-19 08:08:17,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 08:08:17,542 INFO L276 IsEmpty]: Start isEmpty. Operand 6050 states and 8848 transitions. [2022-11-19 08:08:17,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-19 08:08:17,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:08:17,555 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:08:17,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-19 08:08:17,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-19 08:08:17,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 08:08:17,971 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:08:17,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:08:17,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1922747066, now seen corresponding path program 1 times [2022-11-19 08:08:17,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:08:17,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174796594] [2022-11-19 08:08:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:17,973 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 [2022-11-19 08:08:17,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:08:17,975 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:08:18,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-19 08:08:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:18,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1541 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:08:18,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-19 08:08:18,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:08:19,232 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 08:08:19,232 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:08:19,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174796594] [2022-11-19 08:08:19,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174796594] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:08:19,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1125137630] [2022-11-19 08:08:19,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:19,233 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:08:19,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:08:19,235 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:08:19,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-19 08:08:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:20,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 1541 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 08:08:20,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:20,468 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-19 08:08:20,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:08:20,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1125137630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:08:20,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:08:20,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2022-11-19 08:08:20,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820330041] [2022-11-19 08:08:20,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:08:20,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:08:20,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:08:20,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:08:20,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-19 08:08:20,472 INFO L87 Difference]: Start difference. First operand 6050 states and 8848 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 08:08:21,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:08:21,069 INFO L93 Difference]: Finished difference Result 12108 states and 18224 transitions. [2022-11-19 08:08:21,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:08:21,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 153 [2022-11-19 08:08:21,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:08:21,114 INFO L225 Difference]: With dead ends: 12108 [2022-11-19 08:08:21,114 INFO L226 Difference]: Without dead ends: 6066 [2022-11-19 08:08:21,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-19 08:08:21,146 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 0 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4102 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:08:21,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4102 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:08:21,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6066 states. [2022-11-19 08:08:21,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6066 to 6066. [2022-11-19 08:08:21,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6066 states, 4340 states have (on average 1.3486175115207373) internal successors, (5853), 4526 states have internal predecessors, (5853), 1366 states have call successors, (1366), 352 states have call predecessors, (1366), 359 states have return successors, (1693), 1291 states have call predecessors, (1693), 1363 states have call successors, (1693) [2022-11-19 08:08:21,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 8912 transitions. [2022-11-19 08:08:21,960 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 8912 transitions. Word has length 153 [2022-11-19 08:08:21,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:08:21,962 INFO L495 AbstractCegarLoop]: Abstraction has 6066 states and 8912 transitions. [2022-11-19 08:08:21,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 08:08:21,963 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 8912 transitions. [2022-11-19 08:08:21,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-19 08:08:21,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:08:21,978 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:08:21,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-19 08:08:22,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-19 08:08:22,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:08:22,386 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:08:22,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:08:22,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1682448316, now seen corresponding path program 1 times [2022-11-19 08:08:22,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:08:22,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360742901] [2022-11-19 08:08:22,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:22,389 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 [2022-11-19 08:08:22,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:08:22,390 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:08:22,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-19 08:08:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:23,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:08:23,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:23,341 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-19 08:08:23,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:08:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 08:08:23,604 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:08:23,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360742901] [2022-11-19 08:08:23,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360742901] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:08:23,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1461971066] [2022-11-19 08:08:23,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:23,605 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:08:23,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:08:23,606 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:08:23,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-11-19 08:08:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:24,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-19 08:08:24,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:25,147 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-19 08:08:25,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:08:25,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1461971066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:08:25,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:08:25,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 5] total 15 [2022-11-19 08:08:25,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164703638] [2022-11-19 08:08:25,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:08:25,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 08:08:25,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:08:25,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 08:08:25,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-19 08:08:25,150 INFO L87 Difference]: Start difference. First operand 6066 states and 8912 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:08:27,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:08:27,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:08:27,402 INFO L93 Difference]: Finished difference Result 13072 states and 19381 transitions. [2022-11-19 08:08:27,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 08:08:27,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2022-11-19 08:08:27,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:08:27,442 INFO L225 Difference]: With dead ends: 13072 [2022-11-19 08:08:27,442 INFO L226 Difference]: Without dead ends: 7030 [2022-11-19 08:08:27,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-19 08:08:27,463 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 238 mSDsluCounter, 7909 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 9080 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:08:27,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 9080 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-19 08:08:27,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7030 states. [2022-11-19 08:08:28,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7030 to 6122. [2022-11-19 08:08:28,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6122 states, 4388 states have (on average 1.3448040109389243) internal successors, (5901), 4566 states have internal predecessors, (5901), 1366 states have call successors, (1366), 352 states have call predecessors, (1366), 367 states have return successors, (1709), 1307 states have call predecessors, (1709), 1363 states have call successors, (1709) [2022-11-19 08:08:28,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6122 states to 6122 states and 8976 transitions. [2022-11-19 08:08:28,137 INFO L78 Accepts]: Start accepts. Automaton has 6122 states and 8976 transitions. Word has length 159 [2022-11-19 08:08:28,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:08:28,138 INFO L495 AbstractCegarLoop]: Abstraction has 6122 states and 8976 transitions. [2022-11-19 08:08:28,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:08:28,138 INFO L276 IsEmpty]: Start isEmpty. Operand 6122 states and 8976 transitions. [2022-11-19 08:08:28,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-19 08:08:28,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:08:28,160 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:08:28,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2022-11-19 08:08:28,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-19 08:08:28,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:08:28,568 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:08:28,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:08:28,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1038730610, now seen corresponding path program 2 times [2022-11-19 08:08:28,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:08:28,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235630213] [2022-11-19 08:08:28,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:08:28,571 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 [2022-11-19 08:08:28,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:08:28,575 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:08:28,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-19 08:08:36,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:08:36,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:08:36,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:08:36,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-19 08:08:36,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:08:37,193 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-19 08:08:37,194 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:08:37,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235630213] [2022-11-19 08:08:37,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235630213] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:08:37,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1407423222] [2022-11-19 08:08:37,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:08:37,194 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:08:37,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:08:37,199 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:08:37,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-19 08:08:43,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:08:43,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:08:43,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 08:08:43,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-19 08:08:43,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:08:43,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1407423222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:08:43,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:08:43,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-19 08:08:43,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885755375] [2022-11-19 08:08:43,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:08:43,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:08:43,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:08:43,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:08:43,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:08:43,267 INFO L87 Difference]: Start difference. First operand 6122 states and 8976 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:08:44,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:08:44,139 INFO L93 Difference]: Finished difference Result 12456 states and 18306 transitions. [2022-11-19 08:08:44,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:08:44,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 165 [2022-11-19 08:08:44,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:08:44,167 INFO L225 Difference]: With dead ends: 12456 [2022-11-19 08:08:44,168 INFO L226 Difference]: Without dead ends: 6358 [2022-11-19 08:08:44,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:08:44,182 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 223 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:08:44,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 2016 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:08:44,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6358 states. [2022-11-19 08:08:44,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6358 to 6122. [2022-11-19 08:08:44,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6122 states, 4388 states have (on average 1.3429808568824066) internal successors, (5893), 4558 states have internal predecessors, (5893), 1366 states have call successors, (1366), 352 states have call predecessors, (1366), 367 states have return successors, (1709), 1307 states have call predecessors, (1709), 1363 states have call successors, (1709) [2022-11-19 08:08:44,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6122 states to 6122 states and 8968 transitions. [2022-11-19 08:08:44,724 INFO L78 Accepts]: Start accepts. Automaton has 6122 states and 8968 transitions. Word has length 165 [2022-11-19 08:08:44,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:08:44,725 INFO L495 AbstractCegarLoop]: Abstraction has 6122 states and 8968 transitions. [2022-11-19 08:08:44,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:08:44,725 INFO L276 IsEmpty]: Start isEmpty. Operand 6122 states and 8968 transitions. [2022-11-19 08:08:44,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-19 08:08:44,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:08:44,737 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:08:44,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2022-11-19 08:08:44,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-19 08:08:45,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:08:45,152 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:08:45,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:08:45,152 INFO L85 PathProgramCache]: Analyzing trace with hash 405873933, now seen corresponding path program 1 times [2022-11-19 08:08:45,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:08:45,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396329300] [2022-11-19 08:08:45,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:45,154 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 [2022-11-19 08:08:45,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:08:45,156 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:08:45,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-19 08:08:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:46,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:08:46,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:46,199 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-19 08:08:46,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:08:46,435 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-19 08:08:46,435 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:08:46,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396329300] [2022-11-19 08:08:46,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396329300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:08:46,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1546591792] [2022-11-19 08:08:46,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:46,436 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:08:46,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:08:46,439 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:08:46,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-19 08:08:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:47,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 08:08:47,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-19 08:08:47,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:08:47,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1546591792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:08:47,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:08:47,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5] total 12 [2022-11-19 08:08:47,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900441969] [2022-11-19 08:08:47,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:08:47,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:08:47,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:08:47,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:08:47,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:08:47,867 INFO L87 Difference]: Start difference. First operand 6122 states and 8968 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-19 08:08:48,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:08:48,624 INFO L93 Difference]: Finished difference Result 12284 states and 18022 transitions. [2022-11-19 08:08:48,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:08:48,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 170 [2022-11-19 08:08:48,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:08:48,657 INFO L225 Difference]: With dead ends: 12284 [2022-11-19 08:08:48,657 INFO L226 Difference]: Without dead ends: 6186 [2022-11-19 08:08:48,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:08:48,677 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 230 mSDsluCounter, 3814 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 4841 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:08:48,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 4841 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:08:48,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2022-11-19 08:08:49,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 6174. [2022-11-19 08:08:49,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6174 states, 4428 states have (on average 1.3416892502258355) internal successors, (5941), 4594 states have internal predecessors, (5941), 1374 states have call successors, (1374), 352 states have call predecessors, (1374), 371 states have return successors, (1725), 1323 states have call predecessors, (1725), 1371 states have call successors, (1725) [2022-11-19 08:08:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6174 states to 6174 states and 9040 transitions. [2022-11-19 08:08:49,352 INFO L78 Accepts]: Start accepts. Automaton has 6174 states and 9040 transitions. Word has length 170 [2022-11-19 08:08:49,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:08:49,353 INFO L495 AbstractCegarLoop]: Abstraction has 6174 states and 9040 transitions. [2022-11-19 08:08:49,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-19 08:08:49,353 INFO L276 IsEmpty]: Start isEmpty. Operand 6174 states and 9040 transitions. [2022-11-19 08:08:49,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-19 08:08:49,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:08:49,363 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:08:49,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-19 08:08:49,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-19 08:08:49,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:08:49,772 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:08:49,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:08:49,772 INFO L85 PathProgramCache]: Analyzing trace with hash 222400003, now seen corresponding path program 1 times [2022-11-19 08:08:49,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:08:49,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194007700] [2022-11-19 08:08:49,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:49,774 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 [2022-11-19 08:08:49,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:08:49,775 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:08:49,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 (29)] Waiting until timeout for monitored process [2022-11-19 08:08:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:50,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:08:50,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 08:08:50,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:08:51,049 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-19 08:08:51,049 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:08:51,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194007700] [2022-11-19 08:08:51,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194007700] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:08:51,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [576232983] [2022-11-19 08:08:51,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:51,050 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:08:51,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:08:51,059 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:08:51,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-19 08:08:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:53,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:08:53,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:53,804 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 08:08:53,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:08:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-19 08:08:53,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [576232983] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:08:53,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814295728] [2022-11-19 08:08:53,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:53,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:08:53,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:08:54,000 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:08:54,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-19 08:08:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:54,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-19 08:08:54,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:55,580 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-19 08:08:55,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:08:55,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814295728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:08:55,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-19 08:08:55,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 5, 5, 5] total 17 [2022-11-19 08:08:55,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62046414] [2022-11-19 08:08:55,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:08:55,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 08:08:55,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:08:55,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 08:08:55,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-19 08:08:55,583 INFO L87 Difference]: Start difference. First operand 6174 states and 9040 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-19 08:08:59,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:08:59,633 INFO L93 Difference]: Finished difference Result 14836 states and 22163 transitions. [2022-11-19 08:08:59,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-19 08:08:59,634 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) Word has length 176 [2022-11-19 08:08:59,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:08:59,672 INFO L225 Difference]: With dead ends: 14836 [2022-11-19 08:08:59,672 INFO L226 Difference]: Without dead ends: 8686 [2022-11-19 08:08:59,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 863 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2022-11-19 08:08:59,692 INFO L413 NwaCegarLoop]: 2033 mSDtfsCounter, 2264 mSDsluCounter, 17489 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2299 SdHoareTripleChecker+Valid, 19522 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:08:59,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2299 Valid, 19522 Invalid, 802 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [197 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-19 08:08:59,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8686 states. [2022-11-19 08:09:00,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8686 to 6145. [2022-11-19 08:09:00,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6145 states, 4407 states have (on average 1.339459950079419) internal successors, (5903), 4573 states have internal predecessors, (5903), 1366 states have call successors, (1366), 352 states have call predecessors, (1366), 371 states have return successors, (1717), 1315 states have call predecessors, (1717), 1363 states have call successors, (1717) [2022-11-19 08:09:00,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6145 states to 6145 states and 8986 transitions. [2022-11-19 08:09:00,493 INFO L78 Accepts]: Start accepts. Automaton has 6145 states and 8986 transitions. Word has length 176 [2022-11-19 08:09:00,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:00,494 INFO L495 AbstractCegarLoop]: Abstraction has 6145 states and 8986 transitions. [2022-11-19 08:09:00,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-19 08:09:00,495 INFO L276 IsEmpty]: Start isEmpty. Operand 6145 states and 8986 transitions. [2022-11-19 08:09:00,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-19 08:09:00,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:00,507 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:09:00,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2022-11-19 08:09:00,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 (29)] Ended with exit code 0 [2022-11-19 08:09:00,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-11-19 08:09:01,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:09:01,123 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:09:01,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:01,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1907114897, now seen corresponding path program 1 times [2022-11-19 08:09:01,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:09:01,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132398675] [2022-11-19 08:09:01,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:01,125 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 [2022-11-19 08:09:01,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:09:01,126 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:09:01,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 (32)] Waiting until timeout for monitored process [2022-11-19 08:09:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:02,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:09:02,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:09:02,147 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-19 08:09:02,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:09:02,435 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-19 08:09:02,435 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:09:02,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132398675] [2022-11-19 08:09:02,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132398675] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:09:02,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [715782501] [2022-11-19 08:09:02,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:02,436 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:09:02,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:09:02,443 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:09:02,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2022-11-19 08:09:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:03,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-19 08:09:03,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:09:05,056 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-19 08:09:05,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:09:06,584 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-19 08:09:06,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [715782501] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:09:06,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017080353] [2022-11-19 08:09:06,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:06,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:09:06,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:09:06,586 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:09:06,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-19 08:09:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:07,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 08:09:07,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:09:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-19 08:09:08,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:09:09,482 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-19 08:09:09,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017080353] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:09:09,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 08:09:09,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 9, 8, 8, 8] total 21 [2022-11-19 08:09:09,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238956426] [2022-11-19 08:09:09,483 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 08:09:09,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 08:09:09,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:09:09,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 08:09:09,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-11-19 08:09:09,485 INFO L87 Difference]: Start difference. First operand 6145 states and 8986 transitions. Second operand has 21 states, 21 states have (on average 14.142857142857142) internal successors, (297), 19 states have internal predecessors, (297), 7 states have call successors, (60), 5 states have call predecessors, (60), 7 states have return successors, (60), 9 states have call predecessors, (60), 7 states have call successors, (60) [2022-11-19 08:09:17,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:09:46,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:46,016 INFO L93 Difference]: Finished difference Result 14721 states and 21697 transitions. [2022-11-19 08:09:46,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 08:09:46,017 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 14.142857142857142) internal successors, (297), 19 states have internal predecessors, (297), 7 states have call successors, (60), 5 states have call predecessors, (60), 7 states have return successors, (60), 9 states have call predecessors, (60), 7 states have call successors, (60) Word has length 196 [2022-11-19 08:09:46,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:46,056 INFO L225 Difference]: With dead ends: 14721 [2022-11-19 08:09:46,057 INFO L226 Difference]: Without dead ends: 8594 [2022-11-19 08:09:46,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1187 GetRequests, 1153 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 08:09:46,075 INFO L413 NwaCegarLoop]: 1079 mSDtfsCounter, 3909 mSDsluCounter, 10807 mSDsCounter, 0 mSdLazyCounter, 7162 mSolverCounterSat, 1649 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4075 SdHoareTripleChecker+Valid, 11886 SdHoareTripleChecker+Invalid, 8812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1649 IncrementalHoareTripleChecker+Valid, 7162 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:46,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4075 Valid, 11886 Invalid, 8812 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1649 Valid, 7162 Invalid, 1 Unknown, 0 Unchecked, 34.0s Time] [2022-11-19 08:09:46,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8594 states. [2022-11-19 08:09:46,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8594 to 6404. [2022-11-19 08:09:46,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6404 states, 4582 states have (on average 1.3291139240506329) internal successors, (6090), 4732 states have internal predecessors, (6090), 1390 states have call successors, (1390), 348 states have call predecessors, (1390), 431 states have return successors, (1729), 1415 states have call predecessors, (1729), 1387 states have call successors, (1729) [2022-11-19 08:09:47,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6404 states to 6404 states and 9209 transitions. [2022-11-19 08:09:47,008 INFO L78 Accepts]: Start accepts. Automaton has 6404 states and 9209 transitions. Word has length 196 [2022-11-19 08:09:47,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:47,009 INFO L495 AbstractCegarLoop]: Abstraction has 6404 states and 9209 transitions. [2022-11-19 08:09:47,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 14.142857142857142) internal successors, (297), 19 states have internal predecessors, (297), 7 states have call successors, (60), 5 states have call predecessors, (60), 7 states have return successors, (60), 9 states have call predecessors, (60), 7 states have call successors, (60) [2022-11-19 08:09:47,009 INFO L276 IsEmpty]: Start isEmpty. Operand 6404 states and 9209 transitions. [2022-11-19 08:09:47,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-19 08:09:47,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:47,020 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:09:47,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 (32)] Ended with exit code 0 [2022-11-19 08:09:47,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2022-11-19 08:09:47,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-19 08:09:47,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:09:47,639 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:09:47,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:47,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1429225274, now seen corresponding path program 2 times [2022-11-19 08:09:47,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:09:47,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114435713] [2022-11-19 08:09:47,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:09:47,641 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 [2022-11-19 08:09:47,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:09:47,642 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:09:47,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 (35)] Waiting until timeout for monitored process [2022-11-19 08:09:56,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:09:56,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:09:56,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-19 08:09:56,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:09:57,685 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-19 08:09:57,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:10:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-19 08:10:00,539 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:10:00,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114435713] [2022-11-19 08:10:00,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114435713] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:10:00,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2141696719] [2022-11-19 08:10:00,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:10:00,540 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:10:00,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:10:00,541 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:10:00,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-11-19 08:10:06,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:10:06,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:10:06,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-19 08:10:06,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:10:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-19 08:10:07,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:10:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-19 08:10:08,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2141696719] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:10:08,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335425263] [2022-11-19 08:10:08,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:10:08,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:10:08,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:10:08,071 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:10:08,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-19 08:10:11,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:10:11,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:10:11,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-19 08:10:11,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:10:12,197 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-19 08:10:12,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:10:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-19 08:10:13,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335425263] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:10:13,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 08:10:13,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 17, 12, 12, 12] total 36 [2022-11-19 08:10:13,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105915975] [2022-11-19 08:10:13,932 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 08:10:13,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-19 08:10:13,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:10:13,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-19 08:10:13,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1155, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 08:10:13,934 INFO L87 Difference]: Start difference. First operand 6404 states and 9209 transitions. Second operand has 36 states, 36 states have (on average 5.111111111111111) internal successors, (184), 28 states have internal predecessors, (184), 12 states have call successors, (37), 4 states have call predecessors, (37), 11 states have return successors, (43), 20 states have call predecessors, (43), 12 states have call successors, (43) [2022-11-19 08:10:27,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:11:44,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:44,890 INFO L93 Difference]: Finished difference Result 17174 states and 25581 transitions. [2022-11-19 08:11:44,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-19 08:11:44,891 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.111111111111111) internal successors, (184), 28 states have internal predecessors, (184), 12 states have call successors, (37), 4 states have call predecessors, (37), 11 states have return successors, (43), 20 states have call predecessors, (43), 12 states have call successors, (43) Word has length 199 [2022-11-19 08:11:44,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:44,928 INFO L225 Difference]: With dead ends: 17174 [2022-11-19 08:11:44,929 INFO L226 Difference]: Without dead ends: 10797 [2022-11-19 08:11:44,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1244 GetRequests, 1167 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1208 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=665, Invalid=5187, Unknown=0, NotChecked=0, Total=5852 [2022-11-19 08:11:44,948 INFO L413 NwaCegarLoop]: 1401 mSDtfsCounter, 5600 mSDsluCounter, 31333 mSDsCounter, 0 mSdLazyCounter, 20972 mSolverCounterSat, 2172 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5679 SdHoareTripleChecker+Valid, 32734 SdHoareTripleChecker+Invalid, 23145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2172 IncrementalHoareTripleChecker+Valid, 20972 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:11:44,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5679 Valid, 32734 Invalid, 23145 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2172 Valid, 20972 Invalid, 1 Unknown, 0 Unchecked, 84.2s Time] [2022-11-19 08:11:44,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10797 states. [2022-11-19 08:11:45,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10797 to 6384. [2022-11-19 08:11:45,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6384 states, 4570 states have (on average 1.3282275711159737) internal successors, (6070), 4720 states have internal predecessors, (6070), 1382 states have call successors, (1382), 348 states have call predecessors, (1382), 431 states have return successors, (1721), 1407 states have call predecessors, (1721), 1379 states have call successors, (1721) [2022-11-19 08:11:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6384 states to 6384 states and 9173 transitions. [2022-11-19 08:11:45,908 INFO L78 Accepts]: Start accepts. Automaton has 6384 states and 9173 transitions. Word has length 199 [2022-11-19 08:11:45,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:11:45,908 INFO L495 AbstractCegarLoop]: Abstraction has 6384 states and 9173 transitions. [2022-11-19 08:11:45,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.111111111111111) internal successors, (184), 28 states have internal predecessors, (184), 12 states have call successors, (37), 4 states have call predecessors, (37), 11 states have return successors, (43), 20 states have call predecessors, (43), 12 states have call successors, (43) [2022-11-19 08:11:45,909 INFO L276 IsEmpty]: Start isEmpty. Operand 6384 states and 9173 transitions. [2022-11-19 08:11:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-19 08:11:45,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:45,918 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:11:45,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2022-11-19 08:11:46,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 (35)] Forceful destruction successful, exit code 0 [2022-11-19 08:11:46,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-19 08:11:46,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:11:46,536 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:46,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:46,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2099838639, now seen corresponding path program 1 times [2022-11-19 08:11:46,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:11:46,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994051436] [2022-11-19 08:11:46,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:46,538 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 [2022-11-19 08:11:46,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:11:46,539 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:11:46,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 (38)] Waiting until timeout for monitored process [2022-11-19 08:11:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:47,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 1849 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-19 08:11:47,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:11:48,063 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-19 08:11:48,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:11:48,063 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:11:48,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994051436] [2022-11-19 08:11:48,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994051436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:48,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:48,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 08:11:48,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137950547] [2022-11-19 08:11:48,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:48,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 08:11:48,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:11:48,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 08:11:48,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:11:48,065 INFO L87 Difference]: Start difference. First operand 6384 states and 9173 transitions. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 6 states have internal predecessors, (124), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 08:11:48,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:48,933 INFO L93 Difference]: Finished difference Result 12749 states and 18329 transitions. [2022-11-19 08:11:48,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 08:11:48,934 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 6 states have internal predecessors, (124), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) Word has length 202 [2022-11-19 08:11:48,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:48,957 INFO L225 Difference]: With dead ends: 12749 [2022-11-19 08:11:48,957 INFO L226 Difference]: Without dead ends: 6392 [2022-11-19 08:11:48,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:11:48,975 INFO L413 NwaCegarLoop]: 1016 mSDtfsCounter, 2 mSDsluCounter, 6080 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7096 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:11:48,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7096 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:11:48,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6392 states. [2022-11-19 08:11:49,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6392 to 6392. [2022-11-19 08:11:49,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6392 states, 4578 states have (on average 1.327653997378768) internal successors, (6078), 4724 states have internal predecessors, (6078), 1382 states have call successors, (1382), 348 states have call predecessors, (1382), 431 states have return successors, (1721), 1411 states have call predecessors, (1721), 1379 states have call successors, (1721) [2022-11-19 08:11:49,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6392 states to 6392 states and 9181 transitions. [2022-11-19 08:11:49,847 INFO L78 Accepts]: Start accepts. Automaton has 6392 states and 9181 transitions. Word has length 202 [2022-11-19 08:11:49,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:11:49,848 INFO L495 AbstractCegarLoop]: Abstraction has 6392 states and 9181 transitions. [2022-11-19 08:11:49,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 6 states have internal predecessors, (124), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 08:11:49,848 INFO L276 IsEmpty]: Start isEmpty. Operand 6392 states and 9181 transitions. [2022-11-19 08:11:49,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-19 08:11:49,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:49,855 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:11:49,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 (38)] Forceful destruction successful, exit code 0 [2022-11-19 08:11:50,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:11:50,079 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:50,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:50,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1364439973, now seen corresponding path program 2 times [2022-11-19 08:11:50,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:11:50,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84375485] [2022-11-19 08:11:50,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:11:50,080 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 [2022-11-19 08:11:50,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:11:50,081 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:11:50,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 (39)] Waiting until timeout for monitored process [2022-11-19 08:11:57,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:11:57,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:11:57,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 08:11:57,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:11:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-19 08:11:57,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:11:57,994 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:11:57,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84375485] [2022-11-19 08:11:57,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84375485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:57,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:57,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 08:11:57,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483871200] [2022-11-19 08:11:57,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:57,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:11:57,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:11:57,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:11:57,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:11:57,996 INFO L87 Difference]: Start difference. First operand 6392 states and 9181 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:12:00,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:00,068 INFO L93 Difference]: Finished difference Result 15255 states and 22407 transitions. [2022-11-19 08:12:00,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:12:00,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 208 [2022-11-19 08:12:00,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:00,099 INFO L225 Difference]: With dead ends: 15255 [2022-11-19 08:12:00,100 INFO L226 Difference]: Without dead ends: 8890 [2022-11-19 08:12:00,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:12:00,117 INFO L413 NwaCegarLoop]: 1318 mSDtfsCounter, 437 mSDsluCounter, 4983 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 6301 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:00,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 6301 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 08:12:00,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8890 states. [2022-11-19 08:12:01,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8890 to 6404. [2022-11-19 08:12:01,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6404 states, 4590 states have (on average 1.326797385620915) internal successors, (6090), 4732 states have internal predecessors, (6090), 1382 states have call successors, (1382), 348 states have call predecessors, (1382), 431 states have return successors, (1721), 1415 states have call predecessors, (1721), 1379 states have call successors, (1721) [2022-11-19 08:12:01,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6404 states to 6404 states and 9193 transitions. [2022-11-19 08:12:01,057 INFO L78 Accepts]: Start accepts. Automaton has 6404 states and 9193 transitions. Word has length 208 [2022-11-19 08:12:01,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:01,058 INFO L495 AbstractCegarLoop]: Abstraction has 6404 states and 9193 transitions. [2022-11-19 08:12:01,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:12:01,058 INFO L276 IsEmpty]: Start isEmpty. Operand 6404 states and 9193 transitions. [2022-11-19 08:12:01,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-19 08:12:01,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:01,068 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:01,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 (39)] Ended with exit code 0 [2022-11-19 08:12:01,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:12:01,291 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:12:01,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:01,291 INFO L85 PathProgramCache]: Analyzing trace with hash 683288559, now seen corresponding path program 3 times [2022-11-19 08:12:01,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:12:01,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432467003] [2022-11-19 08:12:01,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:12:01,293 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 [2022-11-19 08:12:01,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:12:01,294 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:12:01,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 (40)] Waiting until timeout for monitored process [2022-11-19 08:12:08,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 08:12:08,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:12:08,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:12:08,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:12:08,789 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-19 08:12:08,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:12:08,790 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:12:08,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432467003] [2022-11-19 08:12:08,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432467003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:08,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:08,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:12:08,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333093615] [2022-11-19 08:12:08,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:08,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:12:08,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:12:08,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:12:08,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:12:08,794 INFO L87 Difference]: Start difference. First operand 6404 states and 9193 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-19 08:12:10,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:10,450 INFO L93 Difference]: Finished difference Result 20025 states and 28970 transitions. [2022-11-19 08:12:10,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:12:10,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 214 [2022-11-19 08:12:10,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:10,488 INFO L225 Difference]: With dead ends: 20025 [2022-11-19 08:12:10,488 INFO L226 Difference]: Without dead ends: 13648 [2022-11-19 08:12:10,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:12:10,504 INFO L413 NwaCegarLoop]: 1330 mSDtfsCounter, 1144 mSDsluCounter, 2215 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 3545 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:10,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 3545 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:12:10,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13648 states. [2022-11-19 08:12:11,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13648 to 6412. [2022-11-19 08:12:11,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6412 states, 4598 states have (on average 1.3262287951283167) internal successors, (6098), 4740 states have internal predecessors, (6098), 1382 states have call successors, (1382), 348 states have call predecessors, (1382), 431 states have return successors, (1721), 1415 states have call predecessors, (1721), 1379 states have call successors, (1721) [2022-11-19 08:12:11,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6412 states to 6412 states and 9201 transitions. [2022-11-19 08:12:11,434 INFO L78 Accepts]: Start accepts. Automaton has 6412 states and 9201 transitions. Word has length 214 [2022-11-19 08:12:11,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:11,435 INFO L495 AbstractCegarLoop]: Abstraction has 6412 states and 9201 transitions. [2022-11-19 08:12:11,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-19 08:12:11,435 INFO L276 IsEmpty]: Start isEmpty. Operand 6412 states and 9201 transitions. [2022-11-19 08:12:11,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-19 08:12:11,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:11,443 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:11,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 (40)] Forceful destruction successful, exit code 0 [2022-11-19 08:12:11,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:12:11,644 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:12:11,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:11,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1694405809, now seen corresponding path program 1 times [2022-11-19 08:12:11,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:12:11,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363765546] [2022-11-19 08:12:11,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:11,646 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 [2022-11-19 08:12:11,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:12:11,647 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:12:11,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 (41)] Waiting until timeout for monitored process [2022-11-19 08:12:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:12,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:12:12,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:12:13,702 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-19 08:12:13,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:12:14,134 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-19 08:12:14,134 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:12:14,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363765546] [2022-11-19 08:12:14,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363765546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:12:14,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [789913394] [2022-11-19 08:12:14,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:14,135 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:12:14,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:12:14,138 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:12:14,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2022-11-19 08:12:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:15,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:12:15,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:12:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-19 08:12:16,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:12:16,712 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-19 08:12:16,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [789913394] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:12:16,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061336700] [2022-11-19 08:12:16,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:16,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:12:16,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:12:16,719 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:12:16,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-11-19 08:12:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:17,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:12:17,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:12:18,739 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-19 08:12:18,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:12:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-19 08:12:19,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061336700] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:12:19,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 08:12:19,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2022-11-19 08:12:19,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701986456] [2022-11-19 08:12:19,139 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 08:12:19,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:12:19,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:12:19,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:12:19,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:12:19,141 INFO L87 Difference]: Start difference. First operand 6412 states and 9201 transitions. Second operand has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 4 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-19 08:12:32,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:32,915 INFO L93 Difference]: Finished difference Result 38324 states and 55048 transitions. [2022-11-19 08:12:32,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:12:32,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 4 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 214 [2022-11-19 08:12:32,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:33,027 INFO L225 Difference]: With dead ends: 38324 [2022-11-19 08:12:33,027 INFO L226 Difference]: Without dead ends: 38307 [2022-11-19 08:12:33,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1280 GetRequests, 1275 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:12:33,040 INFO L413 NwaCegarLoop]: 2663 mSDtfsCounter, 6983 mSDsluCounter, 3016 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 1629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6983 SdHoareTripleChecker+Valid, 5679 SdHoareTripleChecker+Invalid, 3467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1629 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:33,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6983 Valid, 5679 Invalid, 3467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1629 Valid, 1838 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-19 08:12:33,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38307 states. [2022-11-19 08:12:38,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38307 to 38204. [2022-11-19 08:12:38,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38204 states, 27370 states have (on average 1.327621483375959) internal successors, (36337), 28244 states have internal predecessors, (36337), 8262 states have call successors, (8262), 2068 states have call predecessors, (8262), 2571 states have return successors, (10311), 8443 states have call predecessors, (10311), 8259 states have call successors, (10311) [2022-11-19 08:12:38,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38204 states to 38204 states and 54910 transitions. [2022-11-19 08:12:38,626 INFO L78 Accepts]: Start accepts. Automaton has 38204 states and 54910 transitions. Word has length 214 [2022-11-19 08:12:38,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:38,627 INFO L495 AbstractCegarLoop]: Abstraction has 38204 states and 54910 transitions. [2022-11-19 08:12:38,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 4 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-19 08:12:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand 38204 states and 54910 transitions. [2022-11-19 08:12:38,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-19 08:12:38,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:38,652 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:38,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-11-19 08:12:38,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (42)] Ended with exit code 0 [2022-11-19 08:12:39,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 (41)] Forceful destruction successful, exit code 0 [2022-11-19 08:12:39,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:12:39,253 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:12:39,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:39,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1771556589, now seen corresponding path program 1 times [2022-11-19 08:12:39,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:12:39,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140569922] [2022-11-19 08:12:39,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:39,256 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 [2022-11-19 08:12:39,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:12:39,257 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:12:39,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/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 (44)] Waiting until timeout for monitored process [2022-11-19 08:12:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:47,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-19 08:12:47,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:12:48,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 08:12:48,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 08:12:51,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:12:51,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:12:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 38 proven. 19 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-19 08:12:54,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:13:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-19 08:13:09,407 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:13:09,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140569922] [2022-11-19 08:13:09,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140569922] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:13:09,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1187882842] [2022-11-19 08:13:09,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:09,408 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:13:09,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:13:09,409 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:13:09,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2022-11-19 08:13:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:55,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 101 conjunts are in the unsatisfiable core [2022-11-19 08:13:55,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:13:57,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 08:13:57,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 08:14:00,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:14:00,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:14:01,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:14:01,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:14:04,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2022-11-19 08:14:04,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-19 08:14:04,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-19 08:14:04,930 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 46 proven. 19 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-19 08:14:04,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:14:31,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1187882842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:14:31,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122110532] [2022-11-19 08:14:31,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:14:31,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:14:31,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:14:31,387 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:14:31,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe321c91-8cf7-47f8-8316-32de497b6e13/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-11-19 08:14:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:14:32,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-19 08:14:32,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:14:33,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 08:14:33,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 08:14:34,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:14:34,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:14:36,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:14:36,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:14:36,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2022-11-19 08:14:37,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2022-11-19 08:14:37,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-19 08:14:37,574 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 46 proven. 19 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-19 08:14:37,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:14:51,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122110532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:14:51,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2022-11-19 08:14:51,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 19, 28, 28] total 64 [2022-11-19 08:14:51,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458253485] [2022-11-19 08:14:51,984 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2022-11-19 08:14:51,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-19 08:14:51,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:14:51,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-19 08:14:51,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=5053, Unknown=0, NotChecked=0, Total=5402 [2022-11-19 08:14:51,987 INFO L87 Difference]: Start difference. First operand 38204 states and 54910 transitions. Second operand has 64 states, 61 states have (on average 4.0) internal successors, (244), 50 states have internal predecessors, (244), 27 states have call successors, (48), 11 states have call predecessors, (48), 20 states have return successors, (53), 33 states have call predecessors, (53), 26 states have call successors, (53) [2022-11-19 08:15:15,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:16:46,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:16:48,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:16:56,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []