./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI --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 ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 --- 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-5e519f3 [2022-11-03 03:43:59,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:43:59,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:43:59,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:43:59,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:43:59,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:43:59,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:43:59,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:43:59,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:43:59,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:43:59,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:43:59,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:43:59,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:43:59,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:43:59,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:43:59,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:43:59,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:43:59,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:43:59,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:43:59,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:43:59,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:43:59,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:43:59,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:43:59,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:43:59,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:43:59,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:43:59,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:43:59,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:43:59,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:43:59,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:43:59,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:43:59,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:43:59,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:43:59,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:43:59,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:43:59,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:43:59,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:43:59,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:43:59,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:43:59,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:43:59,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:43:59,680 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:43:59,718 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:43:59,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:43:59,722 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:43:59,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:43:59,723 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:43:59,724 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:43:59,724 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:43:59,724 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:43:59,725 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:43:59,725 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:43:59,726 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:43:59,726 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:43:59,727 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:43:59,727 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:43:59,727 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:43:59,727 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:43:59,728 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:43:59,728 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:43:59,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:43:59,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:43:59,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:43:59,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:43:59,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:43:59,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:43:59,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:43:59,730 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:43:59,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:43:59,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:43:59,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:43:59,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:43:59,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:43:59,733 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:43:59,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:43:59,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:43:59,734 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:43:59,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:43:59,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:43:59,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:43:59,735 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_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 [2022-11-03 03:44:00,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:44:00,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:44:00,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:44:00,105 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:44:00,106 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:44:00,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2022-11-03 03:44:00,180 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/data/a1be72b2a/178d8773253b402ca7b98a294928f176/FLAGcf7b2d63d [2022-11-03 03:44:01,162 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:44:01,164 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2022-11-03 03:44:01,229 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/data/a1be72b2a/178d8773253b402ca7b98a294928f176/FLAGcf7b2d63d [2022-11-03 03:44:01,577 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/data/a1be72b2a/178d8773253b402ca7b98a294928f176 [2022-11-03 03:44:01,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:44:01,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:44:01,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:44:01,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:44:01,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:44:01,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:01" (1/1) ... [2022-11-03 03:44:01,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cba0205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:01, skipping insertion in model container [2022-11-03 03:44:01,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:01" (1/1) ... [2022-11-03 03:44:01,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:44:01,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:44:03,739 WARN L230 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_a8186ca1-5d52-415a-a20a-94642f21a239/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2022-11-03 03:44:03,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:44:03,935 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:44:04,510 WARN L230 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_a8186ca1-5d52-415a-a20a-94642f21a239/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2022-11-03 03:44:04,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:44:04,720 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:44:04,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:04 WrapperNode [2022-11-03 03:44:04,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:44:04,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:44:04,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:44:04,723 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:44:04,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:04" (1/1) ... [2022-11-03 03:44:04,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:04" (1/1) ... [2022-11-03 03:44:05,058 INFO L138 Inliner]: procedures = 373, calls = 2971, calls flagged for inlining = 172, calls inlined = 164, statements flattened = 5915 [2022-11-03 03:44:05,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:44:05,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:44:05,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:44:05,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:44:05,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:04" (1/1) ... [2022-11-03 03:44:05,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:04" (1/1) ... [2022-11-03 03:44:05,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:04" (1/1) ... [2022-11-03 03:44:05,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:04" (1/1) ... [2022-11-03 03:44:05,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:04" (1/1) ... [2022-11-03 03:44:05,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:04" (1/1) ... [2022-11-03 03:44:05,396 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:04" (1/1) ... [2022-11-03 03:44:05,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:04" (1/1) ... [2022-11-03 03:44:05,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:44:05,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:44:05,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:44:05,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:44:05,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:04" (1/1) ... [2022-11-03 03:44:05,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:44:05,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:44:05,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:44:05,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:44:05,560 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2022-11-03 03:44:05,560 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2022-11-03 03:44:05,560 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2022-11-03 03:44:05,561 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2022-11-03 03:44:05,561 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2022-11-03 03:44:05,561 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2022-11-03 03:44:05,561 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2022-11-03 03:44:05,561 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2022-11-03 03:44:05,561 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-03 03:44:05,562 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-03 03:44:05,562 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-03 03:44:05,562 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-03 03:44:05,562 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-03 03:44:05,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-03 03:44:05,562 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-03 03:44:05,563 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-03 03:44:05,563 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2022-11-03 03:44:05,563 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2022-11-03 03:44:05,563 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-11-03 03:44:05,563 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-11-03 03:44:05,563 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2022-11-03 03:44:05,564 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2022-11-03 03:44:05,564 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2022-11-03 03:44:05,564 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2022-11-03 03:44:05,564 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2022-11-03 03:44:05,564 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2022-11-03 03:44:05,564 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2022-11-03 03:44:05,565 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2022-11-03 03:44:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:44:05,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:44:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-03 03:44:05,565 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-03 03:44:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2022-11-03 03:44:05,566 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2022-11-03 03:44:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2022-11-03 03:44:05,566 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2022-11-03 03:44:05,567 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-11-03 03:44:05,567 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-11-03 03:44:05,567 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 03:44:05,567 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 03:44:05,567 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-03 03:44:05,567 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-03 03:44:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:44:05,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:44:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2022-11-03 03:44:05,568 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2022-11-03 03:44:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2022-11-03 03:44:05,569 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2022-11-03 03:44:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-03 03:44:05,570 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-03 03:44:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2022-11-03 03:44:05,571 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2022-11-03 03:44:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-03 03:44:05,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-03 03:44:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 03:44:05,571 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 03:44:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_get_by_index [2022-11-03 03:44:05,572 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_get_by_index [2022-11-03 03:44:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2022-11-03 03:44:05,573 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2022-11-03 03:44:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2022-11-03 03:44:05,573 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2022-11-03 03:44:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2022-11-03 03:44:05,573 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2022-11-03 03:44:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2022-11-03 03:44:05,574 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2022-11-03 03:44:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2022-11-03 03:44:05,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2022-11-03 03:44:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 03:44:05,574 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 03:44:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2022-11-03 03:44:05,575 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2022-11-03 03:44:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 03:44:05,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 03:44:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 03:44:05,576 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 03:44:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:44:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 03:44:05,577 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 03:44:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2022-11-03 03:44:05,577 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2022-11-03 03:44:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2022-11-03 03:44:05,578 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2022-11-03 03:44:05,578 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2022-11-03 03:44:05,578 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2022-11-03 03:44:05,578 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2022-11-03 03:44:05,579 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2022-11-03 03:44:05,579 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-03 03:44:05,579 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-03 03:44:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2022-11-03 03:44:05,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2022-11-03 03:44:05,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:44:05,581 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 03:44:05,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 03:44:05,582 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-03 03:44:05,582 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2022-11-03 03:44:05,582 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2022-11-03 03:44:05,582 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2022-11-03 03:44:05,582 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2022-11-03 03:44:05,582 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 03:44:05,583 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 03:44:05,583 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2022-11-03 03:44:05,583 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2022-11-03 03:44:05,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:44:05,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:44:05,584 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2022-11-03 03:44:05,584 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2022-11-03 03:44:05,584 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 03:44:05,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 03:44:05,585 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 03:44:05,586 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 03:44:05,588 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2022-11-03 03:44:05,588 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2022-11-03 03:44:05,588 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-11-03 03:44:05,589 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-11-03 03:44:05,589 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 03:44:05,590 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 03:44:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2022-11-03 03:44:05,590 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2022-11-03 03:44:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2022-11-03 03:44:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2022-11-03 03:44:05,598 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:44:05,599 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:44:05,599 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 03:44:05,599 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 03:44:05,599 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2022-11-03 03:44:05,599 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2022-11-03 03:44:05,599 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2022-11-03 03:44:05,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2022-11-03 03:44:05,599 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 03:44:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 03:44:05,600 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2022-11-03 03:44:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2022-11-03 03:44:05,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-03 03:44:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-03 03:44:05,600 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-03 03:44:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-03 03:44:05,601 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2022-11-03 03:44:05,601 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2022-11-03 03:44:05,601 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 03:44:05,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 03:44:05,601 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2022-11-03 03:44:05,601 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2022-11-03 03:44:05,601 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2022-11-03 03:44:05,601 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2022-11-03 03:44:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2022-11-03 03:44:05,602 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2022-11-03 03:44:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2022-11-03 03:44:05,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2022-11-03 03:44:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2022-11-03 03:44:05,602 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2022-11-03 03:44:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-11-03 03:44:05,602 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-11-03 03:44:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:44:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2022-11-03 03:44:05,603 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2022-11-03 03:44:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-03 03:44:05,603 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-03 03:44:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 03:44:05,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 03:44:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2022-11-03 03:44:05,604 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2022-11-03 03:44:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2022-11-03 03:44:05,604 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2022-11-03 03:44:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 03:44:05,604 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 03:44:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 03:44:05,604 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 03:44:05,605 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2022-11-03 03:44:05,605 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2022-11-03 03:44:05,605 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-11-03 03:44:05,605 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-11-03 03:44:05,605 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:44:05,605 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:44:05,605 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-03 03:44:05,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-03 03:44:05,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:44:05,606 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2022-11-03 03:44:05,606 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2022-11-03 03:44:05,606 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-11-03 03:44:05,606 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-03 03:44:05,606 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-03 03:44:05,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:44:05,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:44:05,607 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2022-11-03 03:44:05,607 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2022-11-03 03:44:05,607 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2022-11-03 03:44:05,607 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2022-11-03 03:44:05,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2022-11-03 03:44:05,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2022-11-03 03:44:05,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:44:05,608 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2022-11-03 03:44:05,608 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2022-11-03 03:44:05,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:44:05,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:44:05,608 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 03:44:05,608 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:44:05,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:44:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:44:05,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:44:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2022-11-03 03:44:05,609 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2022-11-03 03:44:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_table_lock [2022-11-03 03:44:05,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_table_lock [2022-11-03 03:44:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 03:44:05,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 03:44:05,610 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2022-11-03 03:44:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2022-11-03 03:44:05,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_table_lock [2022-11-03 03:44:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_table_lock [2022-11-03 03:44:05,610 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 03:44:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 03:44:05,610 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2022-11-03 03:44:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2022-11-03 03:44:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2022-11-03 03:44:05,611 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2022-11-03 03:44:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:44:05,611 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:44:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2022-11-03 03:44:05,611 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2022-11-03 03:44:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 03:44:05,612 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 03:44:05,612 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2022-11-03 03:44:05,612 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2022-11-03 03:44:05,612 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:44:05,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:44:05,612 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2022-11-03 03:44:05,612 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2022-11-03 03:44:05,612 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 03:44:05,613 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 03:44:05,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:44:05,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 03:44:05,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 03:44:05,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:44:05,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:44:05,613 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-11-03 03:44:05,613 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-11-03 03:44:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2022-11-03 03:44:05,618 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2022-11-03 03:44:06,588 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:44:06,595 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:44:17,248 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:44:18,717 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:44:18,717 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:44:18,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:44:18 BoogieIcfgContainer [2022-11-03 03:44:18,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:44:18,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:44:18,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:44:18,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:44:18,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:44:01" (1/3) ... [2022-11-03 03:44:18,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a71acdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:44:18, skipping insertion in model container [2022-11-03 03:44:18,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:04" (2/3) ... [2022-11-03 03:44:18,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a71acdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:44:18, skipping insertion in model container [2022-11-03 03:44:18,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:44:18" (3/3) ... [2022-11-03 03:44:18,733 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2022-11-03 03:44:18,754 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:44:18,755 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:44:18,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:44:18,871 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;@12a0b56f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:44:18,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:44:18,880 INFO L276 IsEmpty]: Start isEmpty. Operand has 1416 states, 850 states have (on average 1.3235294117647058) internal successors, (1125), 884 states have internal predecessors, (1125), 452 states have call successors, (452), 112 states have call predecessors, (452), 112 states have return successors, (452), 438 states have call predecessors, (452), 452 states have call successors, (452) [2022-11-03 03:44:18,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 03:44:18,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:18,890 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] [2022-11-03 03:44:18,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:18,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:18,897 INFO L85 PathProgramCache]: Analyzing trace with hash -525182134, now seen corresponding path program 1 times [2022-11-03 03:44:18,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:18,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127986995] [2022-11-03 03:44:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:18,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:44:19,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:19,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127986995] [2022-11-03 03:44:19,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127986995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:19,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:19,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:19,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609618411] [2022-11-03 03:44:19,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:19,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:19,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:19,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:19,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:19,676 INFO L87 Difference]: Start difference. First operand has 1416 states, 850 states have (on average 1.3235294117647058) internal successors, (1125), 884 states have internal predecessors, (1125), 452 states have call successors, (452), 112 states have call predecessors, (452), 112 states have return successors, (452), 438 states have call predecessors, (452), 452 states have call successors, (452) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:44:22,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:26,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:26,356 INFO L93 Difference]: Finished difference Result 4012 states and 6021 transitions. [2022-11-03 03:44:26,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:26,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2022-11-03 03:44:26,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:26,415 INFO L225 Difference]: With dead ends: 4012 [2022-11-03 03:44:26,415 INFO L226 Difference]: Without dead ends: 2620 [2022-11-03 03:44:26,432 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 [2022-11-03 03:44:26,439 INFO L413 NwaCegarLoop]: 2327 mSDtfsCounter, 1874 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1874 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:26,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1874 Valid, 4000 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 537 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-03 03:44:26,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2022-11-03 03:44:26,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2615. [2022-11-03 03:44:26,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2615 states, 1573 states have (on average 1.3204068658614112) internal successors, (2077), 1634 states have internal predecessors, (2077), 829 states have call successors, (829), 220 states have call predecessors, (829), 212 states have return successors, (892), 777 states have call predecessors, (892), 813 states have call successors, (892) [2022-11-03 03:44:26,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2615 states to 2615 states and 3798 transitions. [2022-11-03 03:44:26,766 INFO L78 Accepts]: Start accepts. Automaton has 2615 states and 3798 transitions. Word has length 23 [2022-11-03 03:44:26,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:26,767 INFO L495 AbstractCegarLoop]: Abstraction has 2615 states and 3798 transitions. [2022-11-03 03:44:26,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:44:26,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2615 states and 3798 transitions. [2022-11-03 03:44:26,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-03 03:44:26,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:26,769 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] [2022-11-03 03:44:26,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:44:26,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:26,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:26,771 INFO L85 PathProgramCache]: Analyzing trace with hash 897309236, now seen corresponding path program 1 times [2022-11-03 03:44:26,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:26,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957533273] [2022-11-03 03:44:26,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:26,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:27,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:44:27,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:27,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957533273] [2022-11-03 03:44:27,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957533273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:27,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:27,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:27,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577510419] [2022-11-03 03:44:27,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:27,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:27,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:27,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:27,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:27,115 INFO L87 Difference]: Start difference. First operand 2615 states and 3798 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:44:30,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:32,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:35,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:35,573 INFO L93 Difference]: Finished difference Result 5118 states and 7424 transitions. [2022-11-03 03:44:35,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:35,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2022-11-03 03:44:35,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:35,618 INFO L225 Difference]: With dead ends: 5118 [2022-11-03 03:44:35,618 INFO L226 Difference]: Without dead ends: 5115 [2022-11-03 03:44:35,623 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 [2022-11-03 03:44:35,624 INFO L413 NwaCegarLoop]: 2251 mSDtfsCounter, 1863 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 3995 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:35,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1863 Valid, 3995 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 531 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-11-03 03:44:35,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5115 states. [2022-11-03 03:44:35,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5115 to 5092. [2022-11-03 03:44:35,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5092 states, 3058 states have (on average 1.3201438848920863) internal successors, (4037), 3171 states have internal predecessors, (4037), 1611 states have call successors, (1611), 436 states have call predecessors, (1611), 422 states have return successors, (1751), 1516 states have call predecessors, (1751), 1593 states have call successors, (1751) [2022-11-03 03:44:36,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 7399 transitions. [2022-11-03 03:44:36,017 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 7399 transitions. Word has length 24 [2022-11-03 03:44:36,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:36,018 INFO L495 AbstractCegarLoop]: Abstraction has 5092 states and 7399 transitions. [2022-11-03 03:44:36,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:44:36,018 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 7399 transitions. [2022-11-03 03:44:36,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 03:44:36,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:36,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:36,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:44:36,021 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:36,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:36,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2044873613, now seen corresponding path program 1 times [2022-11-03 03:44:36,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:36,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291065917] [2022-11-03 03:44:36,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:36,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:36,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:44:36,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:36,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291065917] [2022-11-03 03:44:36,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291065917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:36,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:36,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:36,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616516217] [2022-11-03 03:44:36,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:36,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:36,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:36,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:36,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:36,387 INFO L87 Difference]: Start difference. First operand 5092 states and 7399 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:44:39,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:43,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:43,197 INFO L93 Difference]: Finished difference Result 5119 states and 7425 transitions. [2022-11-03 03:44:43,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:43,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2022-11-03 03:44:43,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:43,241 INFO L225 Difference]: With dead ends: 5119 [2022-11-03 03:44:43,241 INFO L226 Difference]: Without dead ends: 5116 [2022-11-03 03:44:43,246 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 [2022-11-03 03:44:43,247 INFO L413 NwaCegarLoop]: 2236 mSDtfsCounter, 1860 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1860 SdHoareTripleChecker+Valid, 3983 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:43,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1860 Valid, 3983 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 528 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-03 03:44:43,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5116 states. [2022-11-03 03:44:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5116 to 5093. [2022-11-03 03:44:43,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 3059 states have (on average 1.3200392285060478) internal successors, (4038), 3172 states have internal predecessors, (4038), 1611 states have call successors, (1611), 436 states have call predecessors, (1611), 422 states have return successors, (1751), 1516 states have call predecessors, (1751), 1593 states have call successors, (1751) [2022-11-03 03:44:43,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 7400 transitions. [2022-11-03 03:44:43,614 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 7400 transitions. Word has length 25 [2022-11-03 03:44:43,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:43,614 INFO L495 AbstractCegarLoop]: Abstraction has 5093 states and 7400 transitions. [2022-11-03 03:44:43,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:44:43,615 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 7400 transitions. [2022-11-03 03:44:43,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 03:44:43,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:43,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:43,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:44:43,617 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:43,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:43,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1035331497, now seen corresponding path program 1 times [2022-11-03 03:44:43,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:43,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459027530] [2022-11-03 03:44:43,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:43,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:43,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:44:43,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:43,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459027530] [2022-11-03 03:44:43,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459027530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:43,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:43,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:43,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454353384] [2022-11-03 03:44:43,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:43,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:43,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:43,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:43,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:43,935 INFO L87 Difference]: Start difference. First operand 5093 states and 7400 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:44:45,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:47,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:49,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:49,926 INFO L93 Difference]: Finished difference Result 7001 states and 10189 transitions. [2022-11-03 03:44:49,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:49,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2022-11-03 03:44:49,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:49,987 INFO L225 Difference]: With dead ends: 7001 [2022-11-03 03:44:49,987 INFO L226 Difference]: Without dead ends: 6977 [2022-11-03 03:44:49,993 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 [2022-11-03 03:44:49,995 INFO L413 NwaCegarLoop]: 2211 mSDtfsCounter, 1868 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1868 SdHoareTripleChecker+Valid, 3578 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:49,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1868 Valid, 3578 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 491 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-03 03:44:50,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6977 states. [2022-11-03 03:44:50,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6977 to 6959. [2022-11-03 03:44:50,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6959 states, 4173 states have (on average 1.3177570093457944) internal successors, (5499), 4346 states have internal predecessors, (5499), 2183 states have call successors, (2183), 632 states have call predecessors, (2183), 602 states have return successors, (2456), 2025 states have call predecessors, (2456), 2164 states have call successors, (2456) [2022-11-03 03:44:50,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6959 states to 6959 states and 10138 transitions. [2022-11-03 03:44:50,561 INFO L78 Accepts]: Start accepts. Automaton has 6959 states and 10138 transitions. Word has length 26 [2022-11-03 03:44:50,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:50,562 INFO L495 AbstractCegarLoop]: Abstraction has 6959 states and 10138 transitions. [2022-11-03 03:44:50,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:44:50,563 INFO L276 IsEmpty]: Start isEmpty. Operand 6959 states and 10138 transitions. [2022-11-03 03:44:50,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 03:44:50,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:50,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:50,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:44:50,572 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:50,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:50,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1825918809, now seen corresponding path program 1 times [2022-11-03 03:44:50,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:50,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880545133] [2022-11-03 03:44:50,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:50,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:51,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:44:51,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:51,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880545133] [2022-11-03 03:44:51,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880545133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:51,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:51,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:51,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908928399] [2022-11-03 03:44:51,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:51,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:51,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:51,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:51,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:51,071 INFO L87 Difference]: Start difference. First operand 6959 states and 10138 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:44:53,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:55,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:59,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:59,020 INFO L93 Difference]: Finished difference Result 13907 states and 20261 transitions. [2022-11-03 03:44:59,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:59,021 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2022-11-03 03:44:59,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:59,100 INFO L225 Difference]: With dead ends: 13907 [2022-11-03 03:44:59,100 INFO L226 Difference]: Without dead ends: 6960 [2022-11-03 03:44:59,145 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 [2022-11-03 03:44:59,146 INFO L413 NwaCegarLoop]: 1762 mSDtfsCounter, 0 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3522 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:59,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3522 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 507 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-03 03:44:59,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6960 states. [2022-11-03 03:44:59,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6960 to 6960. [2022-11-03 03:44:59,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6960 states, 4174 states have (on average 1.317680881648299) internal successors, (5500), 4347 states have internal predecessors, (5500), 2183 states have call successors, (2183), 632 states have call predecessors, (2183), 602 states have return successors, (2456), 2025 states have call predecessors, (2456), 2164 states have call successors, (2456) [2022-11-03 03:44:59,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6960 states to 6960 states and 10139 transitions. [2022-11-03 03:44:59,565 INFO L78 Accepts]: Start accepts. Automaton has 6960 states and 10139 transitions. Word has length 34 [2022-11-03 03:44:59,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:59,566 INFO L495 AbstractCegarLoop]: Abstraction has 6960 states and 10139 transitions. [2022-11-03 03:44:59,566 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:44:59,566 INFO L276 IsEmpty]: Start isEmpty. Operand 6960 states and 10139 transitions. [2022-11-03 03:44:59,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 03:44:59,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:59,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:59,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:44:59,573 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:59,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:59,574 INFO L85 PathProgramCache]: Analyzing trace with hash -861743498, now seen corresponding path program 1 times [2022-11-03 03:44:59,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:59,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136795889] [2022-11-03 03:44:59,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:59,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:00,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:45:00,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:00,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136795889] [2022-11-03 03:45:00,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136795889] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:45:00,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870068974] [2022-11-03 03:45:00,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:00,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:45:00,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:45:00,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:45:00,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:45:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:01,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 3596 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:45:01,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:45:01,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:01,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870068974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:01,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:45:01,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 03:45:01,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831415514] [2022-11-03 03:45:01,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:01,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:45:01,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:01,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:45:01,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:01,656 INFO L87 Difference]: Start difference. First operand 6960 states and 10139 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:45:03,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:06,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:08,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:11,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:11,576 INFO L93 Difference]: Finished difference Result 11157 states and 16239 transitions. [2022-11-03 03:45:11,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:45:11,576 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), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2022-11-03 03:45:11,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:11,639 INFO L225 Difference]: With dead ends: 11157 [2022-11-03 03:45:11,639 INFO L226 Difference]: Without dead ends: 8575 [2022-11-03 03:45:11,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:11,664 INFO L413 NwaCegarLoop]: 2364 mSDtfsCounter, 1987 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 3915 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:11,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1987 Valid, 3915 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 509 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2022-11-03 03:45:11,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8575 states. [2022-11-03 03:45:12,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8575 to 8532. [2022-11-03 03:45:12,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8532 states, 5125 states have (on average 1.3164878048780488) internal successors, (6747), 5329 states have internal predecessors, (6747), 2654 states have call successors, (2654), 788 states have call predecessors, (2654), 752 states have return successors, (3038), 2466 states have call predecessors, (3038), 2636 states have call successors, (3038) [2022-11-03 03:45:12,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8532 states to 8532 states and 12439 transitions. [2022-11-03 03:45:12,228 INFO L78 Accepts]: Start accepts. Automaton has 8532 states and 12439 transitions. Word has length 35 [2022-11-03 03:45:12,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:12,230 INFO L495 AbstractCegarLoop]: Abstraction has 8532 states and 12439 transitions. [2022-11-03 03:45:12,230 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), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:45:12,230 INFO L276 IsEmpty]: Start isEmpty. Operand 8532 states and 12439 transitions. [2022-11-03 03:45:12,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 03:45:12,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:12,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:12,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:12,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 03:45:12,451 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:45:12,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:12,451 INFO L85 PathProgramCache]: Analyzing trace with hash -946158456, now seen corresponding path program 1 times [2022-11-03 03:45:12,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:12,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712480257] [2022-11-03 03:45:12,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:12,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:45:13,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:13,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712480257] [2022-11-03 03:45:13,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712480257] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:45:13,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760242209] [2022-11-03 03:45:13,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:13,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:45:13,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:45:13,014 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:45:13,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:45:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:14,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 3598 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:45:14,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:14,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:45:14,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:14,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760242209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:14,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:45:14,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 03:45:14,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604865453] [2022-11-03 03:45:14,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:14,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:45:14,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:14,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:45:14,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:14,528 INFO L87 Difference]: Start difference. First operand 8532 states and 12439 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:45:16,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:18,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:20,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:20,531 INFO L93 Difference]: Finished difference Result 8534 states and 12440 transitions. [2022-11-03 03:45:20,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:45:20,532 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), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 36 [2022-11-03 03:45:20,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:20,591 INFO L225 Difference]: With dead ends: 8534 [2022-11-03 03:45:20,592 INFO L226 Difference]: Without dead ends: 8531 [2022-11-03 03:45:20,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:20,602 INFO L413 NwaCegarLoop]: 1759 mSDtfsCounter, 1981 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1981 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:20,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1981 Valid, 1760 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 255 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-03 03:45:20,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8531 states. [2022-11-03 03:45:21,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8531 to 8531. [2022-11-03 03:45:21,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8531 states, 5125 states have (on average 1.3160975609756098) internal successors, (6745), 5328 states have internal predecessors, (6745), 2653 states have call successors, (2653), 788 states have call predecessors, (2653), 752 states have return successors, (3038), 2466 states have call predecessors, (3038), 2636 states have call successors, (3038) [2022-11-03 03:45:21,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8531 states to 8531 states and 12436 transitions. [2022-11-03 03:45:21,110 INFO L78 Accepts]: Start accepts. Automaton has 8531 states and 12436 transitions. Word has length 36 [2022-11-03 03:45:21,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:21,111 INFO L495 AbstractCegarLoop]: Abstraction has 8531 states and 12436 transitions. [2022-11-03 03:45:21,111 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), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:45:21,112 INFO L276 IsEmpty]: Start isEmpty. Operand 8531 states and 12436 transitions. [2022-11-03 03:45:21,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-03 03:45:21,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:21,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:21,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:21,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 03:45:21,327 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:45:21,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:21,327 INFO L85 PathProgramCache]: Analyzing trace with hash 731950009, now seen corresponding path program 1 times [2022-11-03 03:45:21,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:21,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702780144] [2022-11-03 03:45:21,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:21,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:21,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:45:21,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:21,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702780144] [2022-11-03 03:45:21,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702780144] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:45:21,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463736478] [2022-11-03 03:45:21,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:21,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:45:21,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:45:21,930 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:45:21,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:45:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:23,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 3600 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:45:23,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:23,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:45:23,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:23,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463736478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:23,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:45:23,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 03:45:23,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437397296] [2022-11-03 03:45:23,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:23,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:45:23,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:23,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:45:23,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:23,471 INFO L87 Difference]: Start difference. First operand 8531 states and 12436 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:45:26,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:28,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:28,050 INFO L93 Difference]: Finished difference Result 8533 states and 12437 transitions. [2022-11-03 03:45:28,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:45:28,052 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), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 37 [2022-11-03 03:45:28,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:28,109 INFO L225 Difference]: With dead ends: 8533 [2022-11-03 03:45:28,109 INFO L226 Difference]: Without dead ends: 8501 [2022-11-03 03:45:28,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:28,118 INFO L413 NwaCegarLoop]: 1757 mSDtfsCounter, 1978 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1978 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:28,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1978 Valid, 1758 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 255 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-03 03:45:28,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8501 states. [2022-11-03 03:45:28,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8501 to 8488. [2022-11-03 03:45:28,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8488 states, 5107 states have (on average 1.3162326218915215) internal successors, (6722), 5309 states have internal predecessors, (6722), 2635 states have call successors, (2635), 779 states have call predecessors, (2635), 745 states have return successors, (3023), 2451 states have call predecessors, (3023), 2621 states have call successors, (3023) [2022-11-03 03:45:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8488 states to 8488 states and 12380 transitions. [2022-11-03 03:45:28,709 INFO L78 Accepts]: Start accepts. Automaton has 8488 states and 12380 transitions. Word has length 37 [2022-11-03 03:45:28,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:28,710 INFO L495 AbstractCegarLoop]: Abstraction has 8488 states and 12380 transitions. [2022-11-03 03:45:28,710 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), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:45:28,710 INFO L276 IsEmpty]: Start isEmpty. Operand 8488 states and 12380 transitions. [2022-11-03 03:45:28,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 03:45:28,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:28,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:28,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:28,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-03 03:45:28,927 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:45:28,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:28,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1213709739, now seen corresponding path program 1 times [2022-11-03 03:45:28,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:28,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46367150] [2022-11-03 03:45:28,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:28,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:45:29,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:29,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46367150] [2022-11-03 03:45:29,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46367150] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:45:29,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805772877] [2022-11-03 03:45:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:29,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:45:29,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:45:29,361 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:45:29,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:45:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:30,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 3602 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:45:30,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:45:30,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:30,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805772877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:30,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:45:30,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 03:45:30,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545937687] [2022-11-03 03:45:30,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:30,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:45:30,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:30,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:45:30,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:30,933 INFO L87 Difference]: Start difference. First operand 8488 states and 12380 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:45:32,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:34,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:36,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:36,696 INFO L93 Difference]: Finished difference Result 8526 states and 12405 transitions. [2022-11-03 03:45:36,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:45:36,698 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), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2022-11-03 03:45:36,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:36,750 INFO L225 Difference]: With dead ends: 8526 [2022-11-03 03:45:36,750 INFO L226 Difference]: Without dead ends: 8492 [2022-11-03 03:45:36,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:36,758 INFO L413 NwaCegarLoop]: 1778 mSDtfsCounter, 1834 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:36,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 1933 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 302 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-11-03 03:45:36,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8492 states. [2022-11-03 03:45:37,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8492 to 8433. [2022-11-03 03:45:37,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8433 states, 5088 states have (on average 1.3166273584905661) internal successors, (6699), 5275 states have internal predecessors, (6699), 2590 states have call successors, (2590), 774 states have call predecessors, (2590), 754 states have return successors, (2959), 2435 states have call predecessors, (2959), 2579 states have call successors, (2959) [2022-11-03 03:45:37,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8433 states to 8433 states and 12248 transitions. [2022-11-03 03:45:37,262 INFO L78 Accepts]: Start accepts. Automaton has 8433 states and 12248 transitions. Word has length 38 [2022-11-03 03:45:37,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:37,263 INFO L495 AbstractCegarLoop]: Abstraction has 8433 states and 12248 transitions. [2022-11-03 03:45:37,263 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), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:45:37,263 INFO L276 IsEmpty]: Start isEmpty. Operand 8433 states and 12248 transitions. [2022-11-03 03:45:37,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-03 03:45:37,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:37,268 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:45:37,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:37,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:45:37,491 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:45:37,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:37,491 INFO L85 PathProgramCache]: Analyzing trace with hash -452610720, now seen corresponding path program 1 times [2022-11-03 03:45:37,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:37,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606456564] [2022-11-03 03:45:37,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:37,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:37,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:45:37,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:37,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606456564] [2022-11-03 03:45:37,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606456564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:37,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:37,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:45:37,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37622018] [2022-11-03 03:45:37,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:37,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:37,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:37,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:37,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:45:37,933 INFO L87 Difference]: Start difference. First operand 8433 states and 12248 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:45:39,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:42,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:46,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:46,291 INFO L93 Difference]: Finished difference Result 10994 states and 15929 transitions. [2022-11-03 03:45:46,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:45:46,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2022-11-03 03:45:46,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:46,345 INFO L225 Difference]: With dead ends: 10994 [2022-11-03 03:45:46,345 INFO L226 Difference]: Without dead ends: 8433 [2022-11-03 03:45:46,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:46,367 INFO L413 NwaCegarLoop]: 1749 mSDtfsCounter, 1 mSDsluCounter, 3997 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5242 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:46,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5242 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 763 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2022-11-03 03:45:46,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8433 states. [2022-11-03 03:45:46,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8433 to 8433. [2022-11-03 03:45:46,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8433 states, 5088 states have (on average 1.316430817610063) internal successors, (6698), 5275 states have internal predecessors, (6698), 2590 states have call successors, (2590), 774 states have call predecessors, (2590), 754 states have return successors, (2959), 2435 states have call predecessors, (2959), 2579 states have call successors, (2959) [2022-11-03 03:45:46,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8433 states to 8433 states and 12247 transitions. [2022-11-03 03:45:46,981 INFO L78 Accepts]: Start accepts. Automaton has 8433 states and 12247 transitions. Word has length 46 [2022-11-03 03:45:46,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:46,982 INFO L495 AbstractCegarLoop]: Abstraction has 8433 states and 12247 transitions. [2022-11-03 03:45:46,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:45:46,982 INFO L276 IsEmpty]: Start isEmpty. Operand 8433 states and 12247 transitions. [2022-11-03 03:45:46,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 03:45:46,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:46,986 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:45:46,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:45:46,986 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:45:46,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:46,987 INFO L85 PathProgramCache]: Analyzing trace with hash -190898489, now seen corresponding path program 1 times [2022-11-03 03:45:46,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:46,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010582511] [2022-11-03 03:45:46,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:46,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:45:47,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:47,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010582511] [2022-11-03 03:45:47,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010582511] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:45:47,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163877621] [2022-11-03 03:45:47,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:47,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:45:47,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:45:47,302 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:45:47,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8186ca1-5d52-415a-a20a-94642f21a239/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:45:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:48,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 3036 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:45:48,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:45:48,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:45:48,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:45:48,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163877621] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:45:48,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1087296978] [2022-11-03 03:45:48,590 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-11-03 03:45:48,591 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:45:48,595 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:45:48,600 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:45:48,601 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:45:54,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:45:55,687 INFO L244 Elim1Store]: Index analysis took 1343 ms [2022-11-03 03:48:15,376 WARN L234 SmtUtils]: Spent 2.33m on a formula simplification. DAG size of input: 3072 DAG size of output: 1989 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 03:48:15,386 INFO L356 Elim1Store]: treesize reduction 3530, result has 45.5 percent of original size [2022-11-03 03:48:15,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 342 select indices, 342 select index equivalence classes, 58313 disjoint index pairs (out of 58311 index pairs), introduced 342 new quantified variables, introduced 341 case distinctions, treesize of input 1717 treesize of output 3986 [2022-11-03 03:48:20,350 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 6 [2022-11-03 03:48:22,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:25,344 INFO L244 Elim1Store]: Index analysis took 4279 ms [2022-11-03 03:51:16,907 WARN L234 SmtUtils]: Spent 2.86m on a formula simplification. DAG size of input: 3756 DAG size of output: 2049 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 03:51:16,915 INFO L356 Elim1Store]: treesize reduction 6138, result has 33.3 percent of original size [2022-11-03 03:51:16,925 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 344 select indices, 344 select index equivalence classes, 58655 disjoint index pairs (out of 58996 index pairs), introduced 344 new quantified variables, introduced 682 case distinctions, treesize of input 1727 treesize of output 4117 [2022-11-03 03:51:25,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 6 [2022-11-03 03:51:25,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:25,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:26,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:26,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:26,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:26,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:26,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:26,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:26,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:26,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:26,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:26,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:26,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:26,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:26,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:26,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:51:26,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 38 select indices, 38 select index equivalence classes, 741 disjoint index pairs (out of 703 index pairs), introduced 38 new quantified variables, introduced 0 case distinctions, treesize of input 1276 treesize of output 1113 [2022-11-03 03:54:41,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:54:41,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:54:53,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:53,852 INFO L244 Elim1Store]: Index analysis took 207 ms [2022-11-03 03:54:53,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 343 select indices, 343 select index equivalence classes, 58654 disjoint index pairs (out of 58653 index pairs), introduced 343 new quantified variables, introduced 0 case distinctions, treesize of input 1716 treesize of output 1030 [2022-11-03 03:54:56,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:56,704 INFO L244 Elim1Store]: Index analysis took 183 ms [2022-11-03 03:54:56,790 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 344 select indices, 344 select index equivalence classes, 58996 disjoint index pairs (out of 58996 index pairs), introduced 344 new quantified variables, introduced 0 case distinctions, treesize of input 1721 treesize of output 1033 [2022-11-03 03:55:28,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:28,623 INFO L244 Elim1Store]: Index analysis took 114 ms [2022-11-03 03:55:28,684 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 343 select indices, 343 select index equivalence classes, 58654 disjoint index pairs (out of 58653 index pairs), introduced 343 new quantified variables, introduced 0 case distinctions, treesize of input 1716 treesize of output 1030 [2022-11-03 03:55:31,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:31,674 INFO L244 Elim1Store]: Index analysis took 114 ms [2022-11-03 03:55:31,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 344 select indices, 344 select index equivalence classes, 58996 disjoint index pairs (out of 58996 index pairs), introduced 344 new quantified variables, introduced 0 case distinctions, treesize of input 1721 treesize of output 1033