./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-usb-dev_drivers-media-usb-hdpvr-hdpvr.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b33c81f8-f97e-4771-8320-f0cfdf4420da/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b33c81f8-f97e-4771-8320-f0cfdf4420da/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b33c81f8-f97e-4771-8320-f0cfdf4420da/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b33c81f8-f97e-4771-8320-f0cfdf4420da/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-usb-dev_drivers-media-usb-hdpvr-hdpvr.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b33c81f8-f97e-4771-8320-f0cfdf4420da/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b33c81f8-f97e-4771-8320-f0cfdf4420da/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --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 a0406e8dccf5f59798fec77b2cbc38446a1d3a331f932787b5f2744b9c0033a1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 08:16:39,391 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 08:16:39,456 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b33c81f8-f97e-4771-8320-f0cfdf4420da/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 08:16:39,462 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 08:16:39,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 08:16:39,488 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 08:16:39,489 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 08:16:39,489 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 08:16:39,490 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 08:16:39,491 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 08:16:39,491 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 08:16:39,492 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 08:16:39,492 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 08:16:39,493 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 08:16:39,493 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 08:16:39,494 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 08:16:39,494 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 08:16:39,495 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 08:16:39,495 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 08:16:39,496 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 08:16:39,496 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 08:16:39,500 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 08:16:39,501 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 08:16:39,501 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 08:16:39,502 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 08:16:39,502 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 08:16:39,502 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 08:16:39,503 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 08:16:39,503 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 08:16:39,503 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 08:16:39,504 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 08:16:39,504 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 08:16:39,505 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 08:16:39,505 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 08:16:39,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:16:39,505 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 08:16:39,505 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 08:16:39,506 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 08:16:39,506 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 08:16:39,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 08:16:39,506 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 08:16:39,507 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 08:16:39,507 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 08:16:39,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 08:16:39,507 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b33c81f8-f97e-4771-8320-f0cfdf4420da/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b33c81f8-f97e-4771-8320-f0cfdf4420da/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0406e8dccf5f59798fec77b2cbc38446a1d3a331f932787b5f2744b9c0033a1 [2023-12-02 08:16:39,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 08:16:39,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 08:16:39,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 08:16:39,737 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 08:16:39,737 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 08:16:39,738 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b33c81f8-f97e-4771-8320-f0cfdf4420da/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-usb-dev_drivers-media-usb-hdpvr-hdpvr.cil.i [2023-12-02 08:16:42,471 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 08:16:42,955 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 08:16:42,955 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b33c81f8-f97e-4771-8320-f0cfdf4420da/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-usb-dev_drivers-media-usb-hdpvr-hdpvr.cil.i [2023-12-02 08:16:42,997 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b33c81f8-f97e-4771-8320-f0cfdf4420da/bin/utaipan-verify-nQ1chXbOIh/data/39cdf0bd0/cdf82decc1a84f57a3e6fd5a2297eea1/FLAGbb088742c [2023-12-02 08:16:43,011 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b33c81f8-f97e-4771-8320-f0cfdf4420da/bin/utaipan-verify-nQ1chXbOIh/data/39cdf0bd0/cdf82decc1a84f57a3e6fd5a2297eea1 [2023-12-02 08:16:43,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 08:16:43,015 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 08:16:43,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 08:16:43,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 08:16:43,021 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 08:16:43,022 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:16:43" (1/1) ... [2023-12-02 08:16:43,023 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d7edbc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:43, skipping insertion in model container [2023-12-02 08:16:43,023 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:16:43" (1/1) ... [2023-12-02 08:16:43,198 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 08:16:45,322 WARN L240 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_b33c81f8-f97e-4771-8320-f0cfdf4420da/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-usb-dev_drivers-media-usb-hdpvr-hdpvr.cil.i[336746,336759] [2023-12-02 08:16:45,326 WARN L240 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_b33c81f8-f97e-4771-8320-f0cfdf4420da/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-usb-dev_drivers-media-usb-hdpvr-hdpvr.cil.i[336893,336906] [2023-12-02 08:16:45,326 WARN L240 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_b33c81f8-f97e-4771-8320-f0cfdf4420da/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-usb-dev_drivers-media-usb-hdpvr-hdpvr.cil.i[337032,337045] [2023-12-02 08:16:45,327 WARN L240 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_b33c81f8-f97e-4771-8320-f0cfdf4420da/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-usb-dev_drivers-media-usb-hdpvr-hdpvr.cil.i[337190,337203] [2023-12-02 08:16:45,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:16:45,410 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 08:16:45,553 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [6743] [2023-12-02 08:16:45,758 WARN L240 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_b33c81f8-f97e-4771-8320-f0cfdf4420da/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-usb-dev_drivers-media-usb-hdpvr-hdpvr.cil.i[336746,336759] [2023-12-02 08:16:45,759 WARN L240 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_b33c81f8-f97e-4771-8320-f0cfdf4420da/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-usb-dev_drivers-media-usb-hdpvr-hdpvr.cil.i[336893,336906] [2023-12-02 08:16:45,759 WARN L240 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_b33c81f8-f97e-4771-8320-f0cfdf4420da/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-usb-dev_drivers-media-usb-hdpvr-hdpvr.cil.i[337032,337045] [2023-12-02 08:16:45,760 WARN L240 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_b33c81f8-f97e-4771-8320-f0cfdf4420da/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-usb-dev_drivers-media-usb-hdpvr-hdpvr.cil.i[337190,337203] [2023-12-02 08:16:45,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:16:45,888 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 08:16:45,895 INFO L206 MainTranslator]: Completed translation [2023-12-02 08:16:45,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:45 WrapperNode [2023-12-02 08:16:45,896 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 08:16:45,897 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 08:16:45,897 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 08:16:45,897 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 08:16:45,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:45" (1/1) ... [2023-12-02 08:16:45,998 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:45" (1/1) ... [2023-12-02 08:16:47,377 INFO L138 Inliner]: procedures = 318, calls = 5626, calls flagged for inlining = 191, calls inlined = 186, statements flattened = 11518 [2023-12-02 08:16:47,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 08:16:47,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 08:16:47,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 08:16:47,379 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 08:16:47,389 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:45" (1/1) ... [2023-12-02 08:16:47,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:45" (1/1) ... [2023-12-02 08:16:48,001 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:45" (1/1) ... [2023-12-02 08:16:48,002 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:45" (1/1) ... [2023-12-02 08:16:49,487 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:45" (1/1) ... [2023-12-02 08:16:49,533 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:45" (1/1) ... [2023-12-02 08:16:49,591 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:45" (1/1) ... [2023-12-02 08:16:49,629 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:45" (1/1) ... [2023-12-02 08:16:49,721 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 08:16:49,722 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 08:16:49,722 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 08:16:49,722 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 08:16:49,723 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:45" (1/1) ... [2023-12-02 08:16:49,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:16:49,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b33c81f8-f97e-4771-8320-f0cfdf4420da/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:16:49,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b33c81f8-f97e-4771-8320-f0cfdf4420da/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 08:16:49,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b33c81f8-f97e-4771-8320-f0cfdf4420da/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 08:16:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-12-02 08:16:49,786 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-12-02 08:16:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure list_size [2023-12-02 08:16:49,787 INFO L138 BoogieDeclarations]: Found implementation of procedure list_size [2023-12-02 08:16:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-12-02 08:16:49,787 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-12-02 08:16:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 08:16:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 08:16:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 08:16:49,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 08:16:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 08:16:49,788 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 08:16:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 08:16:49,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 08:16:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2023-12-02 08:16:49,789 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2023-12-02 08:16:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure hdpvr_free_buffers [2023-12-02 08:16:49,789 INFO L138 BoogieDeclarations]: Found implementation of procedure hdpvr_free_buffers [2023-12-02 08:16:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure hdpvr_device_release [2023-12-02 08:16:49,789 INFO L138 BoogieDeclarations]: Found implementation of procedure hdpvr_device_release [2023-12-02 08:16:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure hdpvr_set_audio [2023-12-02 08:16:49,790 INFO L138 BoogieDeclarations]: Found implementation of procedure hdpvr_set_audio [2023-12-02 08:16:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 08:16:49,790 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 08:16:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure hdpvr_config_call [2023-12-02 08:16:49,790 INFO L138 BoogieDeclarations]: Found implementation of procedure hdpvr_config_call [2023-12-02 08:16:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 08:16:49,791 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 08:16:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure hdpvr_disconnect [2023-12-02 08:16:49,791 INFO L138 BoogieDeclarations]: Found implementation of procedure hdpvr_disconnect [2023-12-02 08:16:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fmt_vid_cap [2023-12-02 08:16:49,791 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fmt_vid_cap [2023-12-02 08:16:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2023-12-02 08:16:49,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2023-12-02 08:16:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2023-12-02 08:16:49,792 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2023-12-02 08:16:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 08:16:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 08:16:49,792 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 08:16:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 08:16:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2023-12-02 08:16:49,793 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2023-12-02 08:16:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-12-02 08:16:49,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-12-02 08:16:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure get_video_info [2023-12-02 08:16:49,793 INFO L138 BoogieDeclarations]: Found implementation of procedure get_video_info [2023-12-02 08:16:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2023-12-02 08:16:49,793 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2023-12-02 08:16:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 08:16:49,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 08:16:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_device [2023-12-02 08:16:49,794 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_device [2023-12-02 08:16:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure hdpvr_get_next_buffer [2023-12-02 08:16:49,794 INFO L138 BoogieDeclarations]: Found implementation of procedure hdpvr_get_next_buffer [2023-12-02 08:16:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2023-12-02 08:16:49,794 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2023-12-02 08:16:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 08:16:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 08:16:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 08:16:49,795 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 08:16:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2023-12-02 08:16:49,795 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2023-12-02 08:16:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-12-02 08:16:49,795 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-12-02 08:16:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-12-02 08:16:49,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-12-02 08:16:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-12-02 08:16:49,796 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-12-02 08:16:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 08:16:49,796 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 08:16:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-12-02 08:16:49,796 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-12-02 08:16:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-12-02 08:16:49,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-12-02 08:16:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-12-02 08:16:49,796 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-12-02 08:16:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2023-12-02 08:16:49,797 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2023-12-02 08:16:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 08:16:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-12-02 08:16:49,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-12-02 08:16:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-12-02 08:16:49,797 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-12-02 08:16:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 08:16:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-12-02 08:16:49,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-12-02 08:16:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 08:16:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 08:16:49,798 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 08:16:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure hdpvr_set_bitrate [2023-12-02 08:16:49,798 INFO L138 BoogieDeclarations]: Found implementation of procedure hdpvr_set_bitrate [2023-12-02 08:16:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure hdpvr_i2c_write [2023-12-02 08:16:49,798 INFO L138 BoogieDeclarations]: Found implementation of procedure hdpvr_i2c_write [2023-12-02 08:16:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-12-02 08:16:49,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-12-02 08:16:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2023-12-02 08:16:49,799 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2023-12-02 08:16:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-12-02 08:16:49,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-12-02 08:16:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure hdpvr_free_queue [2023-12-02 08:16:49,799 INFO L138 BoogieDeclarations]: Found implementation of procedure hdpvr_free_queue [2023-12-02 08:16:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2023-12-02 08:16:49,799 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2023-12-02 08:16:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 08:16:49,800 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 08:16:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-12-02 08:16:49,800 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-12-02 08:16:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure hdpvr_delete [2023-12-02 08:16:49,800 INFO L138 BoogieDeclarations]: Found implementation of procedure hdpvr_delete [2023-12-02 08:16:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 08:16:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure hdpvr_open [2023-12-02 08:16:49,800 INFO L138 BoogieDeclarations]: Found implementation of procedure hdpvr_open [2023-12-02 08:16:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 08:16:49,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 08:16:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2023-12-02 08:16:49,801 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2023-12-02 08:16:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std_menu [2023-12-02 08:16:49,801 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std_menu [2023-12-02 08:16:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 08:16:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure hdpvr_stop_streaming [2023-12-02 08:16:49,801 INFO L138 BoogieDeclarations]: Found implementation of procedure hdpvr_stop_streaming [2023-12-02 08:16:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 08:16:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 08:16:49,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 08:16:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 08:16:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-12-02 08:16:49,802 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-12-02 08:16:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-12-02 08:16:49,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-12-02 08:16:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-12-02 08:16:49,802 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-12-02 08:16:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-12-02 08:16:49,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-12-02 08:16:49,803 INFO L130 BoogieDeclarations]: Found specification of procedure hdpvr_s_ctrl [2023-12-02 08:16:49,803 INFO L138 BoogieDeclarations]: Found implementation of procedure hdpvr_s_ctrl [2023-12-02 08:16:49,803 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-12-02 08:16:49,803 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-12-02 08:16:49,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-12-02 08:16:49,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-12-02 08:16:49,803 INFO L130 BoogieDeclarations]: Found specification of procedure hdpvr_cancel_queue [2023-12-02 08:16:49,803 INFO L138 BoogieDeclarations]: Found implementation of procedure hdpvr_cancel_queue [2023-12-02 08:16:49,804 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_del_adapter [2023-12-02 08:16:49,804 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_del_adapter [2023-12-02 08:16:49,804 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-12-02 08:16:49,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-12-02 08:16:49,804 INFO L130 BoogieDeclarations]: Found specification of procedure hdpvr_release [2023-12-02 08:16:49,804 INFO L138 BoogieDeclarations]: Found implementation of procedure hdpvr_release [2023-12-02 08:16:49,804 INFO L130 BoogieDeclarations]: Found specification of procedure hdpvr_try_ctrl [2023-12-02 08:16:49,804 INFO L138 BoogieDeclarations]: Found implementation of procedure hdpvr_try_ctrl [2023-12-02 08:16:49,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 08:16:49,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-12-02 08:16:49,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-12-02 08:16:49,805 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-12-02 08:16:49,805 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-12-02 08:16:49,805 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-12-02 08:16:49,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 08:16:49,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 08:16:49,805 INFO L130 BoogieDeclarations]: Found specification of procedure hdpvr_start_streaming [2023-12-02 08:16:49,805 INFO L138 BoogieDeclarations]: Found implementation of procedure hdpvr_start_streaming [2023-12-02 08:16:49,805 INFO L130 BoogieDeclarations]: Found specification of procedure hdpvr_i2c_read [2023-12-02 08:16:49,806 INFO L138 BoogieDeclarations]: Found implementation of procedure hdpvr_i2c_read [2023-12-02 08:16:50,778 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 08:16:50,782 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 08:16:50,957 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 08:17:23,697 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 08:17:25,371 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 08:17:25,371 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 08:17:25,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:17:25 BoogieIcfgContainer [2023-12-02 08:17:25,373 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 08:17:25,376 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 08:17:25,376 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 08:17:25,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 08:17:25,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:16:43" (1/3) ... [2023-12-02 08:17:25,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bfa11ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:17:25, skipping insertion in model container [2023-12-02 08:17:25,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:45" (2/3) ... [2023-12-02 08:17:25,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bfa11ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:17:25, skipping insertion in model container [2023-12-02 08:17:25,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:17:25" (3/3) ... [2023-12-02 08:17:25,382 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-usb-dev_drivers-media-usb-hdpvr-hdpvr.cil.i [2023-12-02 08:17:25,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 08:17:25,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-12-02 08:17:25,476 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 08:17:25,482 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=LoopHeads, 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;@edc02ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 08:17:25,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-02 08:17:25,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 1219 states, 723 states have (on average 1.3167358229598893) internal successors, (952), 748 states have internal predecessors, (952), 420 states have call successors, (420), 72 states have call predecessors, (420), 71 states have return successors, (415), 411 states have call predecessors, (415), 415 states have call successors, (415) [2023-12-02 08:17:25,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 08:17:25,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:17:25,504 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:17:25,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [hdpvr_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION, hdpvr_deleteErr1ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 08:17:25,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:17:25,509 INFO L85 PathProgramCache]: Analyzing trace with hash -221261590, now seen corresponding path program 1 times [2023-12-02 08:17:25,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:17:25,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547972090] [2023-12-02 08:17:25,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:17:25,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:17:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:17:26,872 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 08:17:26,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:17:26,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547972090] [2023-12-02 08:17:26,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547972090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:17:26,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:17:26,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 08:17:26,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108664191] [2023-12-02 08:17:26,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:17:26,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:17:26,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:17:26,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:17:26,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:17:26,914 INFO L87 Difference]: Start difference. First operand has 1219 states, 723 states have (on average 1.3167358229598893) internal successors, (952), 748 states have internal predecessors, (952), 420 states have call successors, (420), 72 states have call predecessors, (420), 71 states have return successors, (415), 411 states have call predecessors, (415), 415 states have call successors, (415) Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 08:17:29,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:17:30,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:17:32,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:17:35,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:17:37,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:17:39,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:17:43,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:17:45,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:17:47,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:17:50,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:17:52,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:17:55,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:17:57,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:17:59,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:01,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:05,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:07,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:09,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:11,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:13,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:15,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:17,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:19,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:21,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:22,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:18:22,289 INFO L93 Difference]: Finished difference Result 3065 states and 4481 transitions. [2023-12-02 08:18:22,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 08:18:22,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2023-12-02 08:18:22,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:18:22,321 INFO L225 Difference]: With dead ends: 3065 [2023-12-02 08:18:22,321 INFO L226 Difference]: Without dead ends: 2074 [2023-12-02 08:18:22,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:18:22,334 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1385 mSDsluCounter, 3077 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 2 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 4681 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.0s IncrementalHoareTripleChecker+Time [2023-12-02 08:18:22,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1385 Valid, 4681 Invalid, 713 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 689 Invalid, 22 Unknown, 0 Unchecked, 55.0s Time] [2023-12-02 08:18:22,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2023-12-02 08:18:22,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2068. [2023-12-02 08:18:22,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 1246 states have (on average 1.312199036918138) internal successors, (1635), 1279 states have internal predecessors, (1635), 685 states have call successors, (685), 134 states have call predecessors, (685), 133 states have return successors, (683), 675 states have call predecessors, (683), 683 states have call successors, (683) [2023-12-02 08:18:22,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 3003 transitions. [2023-12-02 08:18:22,525 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 3003 transitions. Word has length 34 [2023-12-02 08:18:22,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:18:22,526 INFO L495 AbstractCegarLoop]: Abstraction has 2068 states and 3003 transitions. [2023-12-02 08:18:22,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 08:18:22,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 3003 transitions. [2023-12-02 08:18:22,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 08:18:22,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:18:22,533 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2023-12-02 08:18:22,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 08:18:22,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [hdpvr_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION, hdpvr_deleteErr1ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 08:18:22,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:18:22,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1189942302, now seen corresponding path program 1 times [2023-12-02 08:18:22,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:18:22,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639163818] [2023-12-02 08:18:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:18:22,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:18:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:18:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2023-12-02 08:18:23,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:18:23,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639163818] [2023-12-02 08:18:23,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639163818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:18:23,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:18:23,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 08:18:23,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638417499] [2023-12-02 08:18:23,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:18:23,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:18:23,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:18:23,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:18:23,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:18:23,554 INFO L87 Difference]: Start difference. First operand 2068 states and 3003 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 08:18:26,305 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 [] [2023-12-02 08:18:28,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:30,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:33,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:35,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:37,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:39,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:41,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:44,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:46,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:48,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:50,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:52,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:54,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:57,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:18:59,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:01,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:04,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:06,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:08,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:11,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:13,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:15,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:17,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:19,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:21,773 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 [] [2023-12-02 08:19:22,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:19:22,199 INFO L93 Difference]: Finished difference Result 2074 states and 3006 transitions. [2023-12-02 08:19:22,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 08:19:22,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 124 [2023-12-02 08:19:22,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:19:22,217 INFO L225 Difference]: With dead ends: 2074 [2023-12-02 08:19:22,217 INFO L226 Difference]: Without dead ends: 2072 [2023-12-02 08:19:22,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:19:22,221 INFO L413 NwaCegarLoop]: 1591 mSDtfsCounter, 1295 mSDsluCounter, 3049 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 2 mSolverCounterUnsat, 24 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 4640 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 24 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.4s IncrementalHoareTripleChecker+Time [2023-12-02 08:19:22,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 4640 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 683 Invalid, 24 Unknown, 0 Unchecked, 58.4s Time] [2023-12-02 08:19:22,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2023-12-02 08:19:22,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2068. [2023-12-02 08:19:22,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 1246 states have (on average 1.3113964686998394) internal successors, (1634), 1279 states have internal predecessors, (1634), 685 states have call successors, (685), 134 states have call predecessors, (685), 133 states have return successors, (683), 675 states have call predecessors, (683), 683 states have call successors, (683) [2023-12-02 08:19:22,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 3002 transitions. [2023-12-02 08:19:22,331 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 3002 transitions. Word has length 124 [2023-12-02 08:19:22,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:19:22,332 INFO L495 AbstractCegarLoop]: Abstraction has 2068 states and 3002 transitions. [2023-12-02 08:19:22,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 08:19:22,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 3002 transitions. [2023-12-02 08:19:22,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-02 08:19:22,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:19:22,338 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:19:22,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 08:19:22,339 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting hdpvr_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION === [hdpvr_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION, hdpvr_deleteErr1ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 08:19:22,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:19:22,339 INFO L85 PathProgramCache]: Analyzing trace with hash -960475556, now seen corresponding path program 1 times [2023-12-02 08:19:22,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:19:22,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879752721] [2023-12-02 08:19:22,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:19:22,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:19:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:19:22,707 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-12-02 08:19:22,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:19:22,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879752721] [2023-12-02 08:19:22,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879752721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:19:22,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:19:22,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:19:22,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012343472] [2023-12-02 08:19:22,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:19:22,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:19:22,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:19:22,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:19:22,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:19:22,710 INFO L87 Difference]: Start difference. First operand 2068 states and 3002 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-02 08:19:24,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:26,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:29,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:31,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:34,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:36,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:38,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:40,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:42,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:45,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:47,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:49,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:51,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:53,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:56,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:56,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:19:56,582 INFO L93 Difference]: Finished difference Result 2936 states and 4244 transitions. [2023-12-02 08:19:56,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:19:56,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 150 [2023-12-02 08:19:56,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:19:56,602 INFO L225 Difference]: With dead ends: 2936 [2023-12-02 08:19:56,602 INFO L226 Difference]: Without dead ends: 2073 [2023-12-02 08:19:56,608 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 [2023-12-02 08:19:56,609 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 2 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 1 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3065 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.7s IncrementalHoareTripleChecker+Time [2023-12-02 08:19:56,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3065 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 450 Invalid, 13 Unknown, 0 Unchecked, 33.7s Time] [2023-12-02 08:19:56,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2023-12-02 08:19:56,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2069. [2023-12-02 08:19:56,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 1247 states have (on average 1.3111467522052926) internal successors, (1635), 1280 states have internal predecessors, (1635), 685 states have call successors, (685), 134 states have call predecessors, (685), 133 states have return successors, (683), 675 states have call predecessors, (683), 683 states have call successors, (683) [2023-12-02 08:19:56,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 3003 transitions. [2023-12-02 08:19:56,728 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 3003 transitions. Word has length 150 [2023-12-02 08:19:56,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:19:56,729 INFO L495 AbstractCegarLoop]: Abstraction has 2069 states and 3003 transitions. [2023-12-02 08:19:56,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-02 08:19:56,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 3003 transitions. [2023-12-02 08:19:56,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-02 08:19:56,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:19:56,733 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:19:56,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 08:19:56,734 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting hdpvr_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION === [hdpvr_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION, hdpvr_deleteErr1ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 08:19:56,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:19:56,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1216559138, now seen corresponding path program 1 times [2023-12-02 08:19:56,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:19:56,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670806336] [2023-12-02 08:19:56,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:19:56,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:19:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:19:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-12-02 08:19:59,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:19:59,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670806336] [2023-12-02 08:19:59,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670806336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:19:59,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:19:59,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 08:19:59,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086910927] [2023-12-02 08:19:59,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:19:59,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 08:19:59,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:19:59,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 08:19:59,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 08:19:59,689 INFO L87 Difference]: Start difference. First operand 2069 states and 3003 transitions. Second operand has 8 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 08:20:05,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:07,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:08,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:10,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:13,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:14,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:17,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:19,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:21,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:23,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:25,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:27,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:29,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:33,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:36,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:38,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:40,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:42,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:44,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:46,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:48,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:50,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:52,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:20:55,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:01,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:03,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:05,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:07,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:09,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:11,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:13,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:16,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:19,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:21,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:23,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:25,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:27,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:29,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:31,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:33,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:35,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:37,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:39,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:41,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:44,021 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 [] [2023-12-02 08:21:45,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:21:45,393 INFO L93 Difference]: Finished difference Result 4124 states and 5980 transitions. [2023-12-02 08:21:45,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 08:21:45,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) Word has length 158 [2023-12-02 08:21:45,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:21:45,406 INFO L225 Difference]: With dead ends: 4124 [2023-12-02 08:21:45,406 INFO L226 Difference]: Without dead ends: 2084 [2023-12-02 08:21:45,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-02 08:21:45,414 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 5 mSDsluCounter, 9214 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 0 mSolverCounterUnsat, 40 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 104.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10752 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 40 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105.4s IncrementalHoareTripleChecker+Time [2023-12-02 08:21:45,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 10752 Invalid, 1609 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1569 Invalid, 40 Unknown, 0 Unchecked, 105.4s Time] [2023-12-02 08:21:45,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2023-12-02 08:21:45,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 2075. [2023-12-02 08:21:45,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 1251 states have (on average 1.3101518784972022) internal successors, (1639), 1284 states have internal predecessors, (1639), 685 states have call successors, (685), 134 states have call predecessors, (685), 135 states have return successors, (686), 677 states have call predecessors, (686), 683 states have call successors, (686) [2023-12-02 08:21:45,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 3010 transitions. [2023-12-02 08:21:45,524 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 3010 transitions. Word has length 158 [2023-12-02 08:21:45,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:21:45,525 INFO L495 AbstractCegarLoop]: Abstraction has 2075 states and 3010 transitions. [2023-12-02 08:21:45,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 08:21:45,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 3010 transitions. [2023-12-02 08:21:45,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-02 08:21:45,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:21:45,529 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:21:45,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 08:21:45,529 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting hdpvr_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION === [hdpvr_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION, hdpvr_deleteErr1ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 08:21:45,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:21:45,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1630144989, now seen corresponding path program 1 times [2023-12-02 08:21:45,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:21:45,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651853357] [2023-12-02 08:21:45,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:45,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:21:45,690 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 08:21:45,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028929868] [2023-12-02 08:21:45,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:45,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:21:45,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b33c81f8-f97e-4771-8320-f0cfdf4420da/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:21:45,694 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b33c81f8-f97e-4771-8320-f0cfdf4420da/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:21:45,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b33c81f8-f97e-4771-8320-f0cfdf4420da/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 08:21:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:47,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 5025 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-02 08:21:47,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:21:48,487 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-12-02 08:21:48,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:21:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-02 08:21:49,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:21:49,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651853357] [2023-12-02 08:21:49,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 08:21:49,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028929868] [2023-12-02 08:21:49,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028929868] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:21:49,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1298009898] [2023-12-02 08:21:49,590 INFO L159 IcfgInterpreter]: Started Sifa with 95 locations of interest [2023-12-02 08:21:49,590 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 08:21:49,594 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 08:21:49,599 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 08:21:49,599 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 08:25:55,538 WARN L293 SmtUtils]: Spent 13.20s on a formula simplification that was a NOOP. DAG size: 4804 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 08:26:08,736 WARN L293 SmtUtils]: Spent 13.16s on a formula simplification that was a NOOP. DAG size: 4804 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 08:26:22,156 WARN L293 SmtUtils]: Spent 13.33s on a formula simplification that was a NOOP. DAG size: 4813 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 08:26:35,397 WARN L293 SmtUtils]: Spent 13.22s on a formula simplification that was a NOOP. DAG size: 4804 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 08:26:48,550 WARN L293 SmtUtils]: Spent 13.13s on a formula simplification that was a NOOP. DAG size: 4804 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 08:27:01,597 WARN L293 SmtUtils]: Spent 13.01s on a formula simplification that was a NOOP. DAG size: 4813 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)