./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ --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 71101d2b79b59e25da9ba6ac44f6028cc3034769032ea6dc2bebcfbbe6cd49e1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:07:39,731 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:07:39,857 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:07:39,868 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:07:39,869 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:07:39,912 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:07:39,913 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:07:39,914 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:07:39,915 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:07:39,920 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:07:39,921 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:07:39,921 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:07:39,922 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:07:39,923 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:07:39,923 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:07:39,924 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:07:39,924 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:07:39,925 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:07:39,925 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:07:39,926 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:07:39,926 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:07:39,927 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:07:39,928 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:07:39,929 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:07:39,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:07:39,929 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:07:39,930 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:07:39,930 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:07:39,931 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:07:39,931 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:07:39,933 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:07:39,933 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:07:39,933 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:07:39,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:39,934 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:07:39,935 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:07:39,935 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:07:39,935 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:07:39,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:07:39,936 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:07:39,936 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:07:39,936 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:07:39,937 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_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71101d2b79b59e25da9ba6ac44f6028cc3034769032ea6dc2bebcfbbe6cd49e1 [2023-11-19 05:07:40,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:07:40,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:07:40,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:07:40,290 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:07:40,290 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:07:40,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2023-11-19 05:07:43,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:07:44,039 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:07:44,040 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2023-11-19 05:07:44,099 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ/data/460acfba0/f3cbfb3c234441f6ab01b6f996a6a37f/FLAGecd492461 [2023-11-19 05:07:44,117 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ/data/460acfba0/f3cbfb3c234441f6ab01b6f996a6a37f [2023-11-19 05:07:44,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:07:44,129 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:07:44,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:44,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:07:44,137 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:07:44,138 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:44" (1/1) ... [2023-11-19 05:07:44,139 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dad065d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:44, skipping insertion in model container [2023-11-19 05:07:44,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:44" (1/1) ... [2023-11-19 05:07:44,273 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:07:45,118 WARN L635 FunctionHandler]: implicit declaration of function ldv_assume [2023-11-19 05:07:45,317 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_51b72c79-86af-402a-987e-5ef30485de78/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i[161338,161351] [2023-11-19 05:07:45,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:45,878 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:07:46,015 WARN L635 FunctionHandler]: implicit declaration of function ldv_assume [2023-11-19 05:07:46,095 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_51b72c79-86af-402a-987e-5ef30485de78/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i[161338,161351] [2023-11-19 05:07:46,211 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/net/--X--defaultlinux-3.16-rc1.tar.xz--X--205_9a--X--cpachecker/linux-3.16-rc1.tar.xz/csd_deg_dscv/998/dscv_tempdir/dscv/ri/205_9a/drivers/net/phy/dp83640.o.c.prepared"), "i" (952), "i" (12UL)); [6658-6659] [2023-11-19 05:07:46,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:46,366 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:07:46,366 WARN L675 CHandler]: The function ldv_assume is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:07:46,367 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:07:46,375 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:07:46,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:46 WrapperNode [2023-11-19 05:07:46,376 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:46,377 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:46,377 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:07:46,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:07:46,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:46" (1/1) ... [2023-11-19 05:07:46,467 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:46" (1/1) ... [2023-11-19 05:07:46,583 INFO L138 Inliner]: procedures = 185, calls = 866, calls flagged for inlining = 75, calls inlined = 64, statements flattened = 2341 [2023-11-19 05:07:46,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:46,584 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:07:46,584 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:07:46,584 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:07:46,594 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:46" (1/1) ... [2023-11-19 05:07:46,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:46" (1/1) ... [2023-11-19 05:07:46,609 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:46" (1/1) ... [2023-11-19 05:07:46,610 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:46" (1/1) ... [2023-11-19 05:07:46,684 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:46" (1/1) ... [2023-11-19 05:07:46,698 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:46" (1/1) ... [2023-11-19 05:07:46,792 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:46" (1/1) ... [2023-11-19 05:07:46,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:46" (1/1) ... [2023-11-19 05:07:46,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:07:46,855 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:07:46,855 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:07:46,855 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:07:46,856 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:46" (1/1) ... [2023-11-19 05:07:46,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:46,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:07:46,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:07:46,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:07:46,931 INFO L130 BoogieDeclarations]: Found specification of procedure broadcast_write [2023-11-19 05:07:46,931 INFO L138 BoogieDeclarations]: Found implementation of procedure broadcast_write [2023-11-19 05:07:46,933 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-19 05:07:46,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-19 05:07:46,934 INFO L130 BoogieDeclarations]: Found specification of procedure genphy_config_aneg [2023-11-19 05:07:46,934 INFO L138 BoogieDeclarations]: Found implementation of procedure genphy_config_aneg [2023-11-19 05:07:46,934 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-19 05:07:46,934 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-19 05:07:46,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-19 05:07:46,934 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_put [2023-11-19 05:07:46,935 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_put [2023-11-19 05:07:46,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:07:46,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:07:46,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:07:46,936 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2023-11-19 05:07:46,936 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2023-11-19 05:07:46,937 INFO L130 BoogieDeclarations]: Found specification of procedure phy2txts [2023-11-19 05:07:46,937 INFO L138 BoogieDeclarations]: Found implementation of procedure phy2txts [2023-11-19 05:07:46,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2023-11-19 05:07:46,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2023-11-19 05:07:46,938 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ts_info [2023-11-19 05:07:46,939 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ts_info [2023-11-19 05:07:46,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:07:46,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:07:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2023-11-19 05:07:46,940 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2023-11-19 05:07:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_write [2023-11-19 05:07:46,941 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_write [2023-11-19 05:07:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_intr [2023-11-19 05:07:46,941 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_intr [2023-11-19 05:07:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure tdr_write [2023-11-19 05:07:46,942 INFO L138 BoogieDeclarations]: Found implementation of procedure tdr_write [2023-11-19 05:07:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2023-11-19 05:07:46,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2023-11-19 05:07:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:07:46,943 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:07:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure exts_chan_to_edata [2023-11-19 05:07:46,943 INFO L138 BoogieDeclarations]: Found implementation of procedure exts_chan_to_edata [2023-11-19 05:07:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure skb_complete_tx_timestamp [2023-11-19 05:07:46,943 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_complete_tx_timestamp [2023-11-19 05:07:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-11-19 05:07:46,944 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-11-19 05:07:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-11-19 05:07:46,944 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-11-19 05:07:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:07:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 05:07:46,945 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 05:07:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 05:07:46,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 05:07:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_rxtstamp [2023-11-19 05:07:46,945 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_rxtstamp [2023-11-19 05:07:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-19 05:07:46,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-19 05:07:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:07:46,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:07:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2023-11-19 05:07:46,946 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2023-11-19 05:07:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:07:46,948 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:07:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:07:46,949 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:07:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:07:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure prune_rx_ts [2023-11-19 05:07:46,949 INFO L138 BoogieDeclarations]: Found implementation of procedure prune_rx_ts [2023-11-19 05:07:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 05:07:46,950 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 05:07:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-19 05:07:46,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-19 05:07:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:07:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_init [2023-11-19 05:07:46,951 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_init [2023-11-19 05:07:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:07:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:07:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 05:07:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-19 05:07:46,952 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-19 05:07:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 05:07:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_ktime [2023-11-19 05:07:46,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_ktime [2023-11-19 05:07:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-11-19 05:07:46,953 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-11-19 05:07:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:07:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2023-11-19 05:07:46,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2023-11-19 05:07:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-19 05:07:46,954 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-19 05:07:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 05:07:46,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 05:07:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 05:07:46,955 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 05:07:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure enable_status_frames [2023-11-19 05:07:46,955 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_status_frames [2023-11-19 05:07:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_hwtstamp [2023-11-19 05:07:46,955 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_hwtstamp [2023-11-19 05:07:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-19 05:07:46,956 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-19 05:07:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2023-11-19 05:07:46,956 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2023-11-19 05:07:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2023-11-19 05:07:46,957 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2023-11-19 05:07:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:07:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:07:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2023-11-19 05:07:46,957 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2023-11-19 05:07:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-19 05:07:46,958 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-19 05:07:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:07:46,958 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:07:46,959 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_get [2023-11-19 05:07:46,959 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_get [2023-11-19 05:07:46,959 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ack_interrupt [2023-11-19 05:07:46,959 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ack_interrupt [2023-11-19 05:07:46,959 INFO L130 BoogieDeclarations]: Found specification of procedure ext_read [2023-11-19 05:07:46,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_read [2023-11-19 05:07:46,960 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-11-19 05:07:46,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-11-19 05:07:46,961 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 05:07:46,961 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 05:07:46,961 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-19 05:07:46,961 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-19 05:07:46,961 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-19 05:07:46,962 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-19 05:07:46,962 INFO L130 BoogieDeclarations]: Found specification of procedure skb_mac_header [2023-11-19 05:07:46,962 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_mac_header [2023-11-19 05:07:46,962 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_txtstamp [2023-11-19 05:07:46,962 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_txtstamp [2023-11-19 05:07:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:07:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure enable_broadcast [2023-11-19 05:07:46,963 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_broadcast [2023-11-19 05:07:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-19 05:07:46,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-19 05:07:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-19 05:07:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-19 05:07:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:07:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:07:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_timespec [2023-11-19 05:07:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_timespec [2023-11-19 05:07:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure ext_write [2023-11-19 05:07:46,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_write [2023-11-19 05:07:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 05:07:46,966 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 05:07:47,471 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:07:47,475 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:07:48,042 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:07:50,122 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:07:51,208 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:07:51,209 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 05:07:51,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:07:51 BoogieIcfgContainer [2023-11-19 05:07:51,220 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:07:51,223 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:07:51,223 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:07:51,226 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:07:51,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:07:44" (1/3) ... [2023-11-19 05:07:51,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b6a239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:07:51, skipping insertion in model container [2023-11-19 05:07:51,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:46" (2/3) ... [2023-11-19 05:07:51,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b6a239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:07:51, skipping insertion in model container [2023-11-19 05:07:51,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:07:51" (3/3) ... [2023-11-19 05:07:51,230 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2023-11-19 05:07:51,251 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:07:51,251 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:07:51,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:07:51,329 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;@1cc0ee22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:07:51,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:07:51,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 676 states, 406 states have (on average 1.3399014778325122) internal successors, (544), 423 states have internal predecessors, (544), 206 states have call successors, (206), 63 states have call predecessors, (206), 62 states have return successors, (203), 202 states have call predecessors, (203), 203 states have call successors, (203) [2023-11-19 05:07:51,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 05:07:51,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:51,352 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:51,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:51,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:51,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2113175941, now seen corresponding path program 1 times [2023-11-19 05:07:51,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:51,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219744396] [2023-11-19 05:07:51,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:51,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:52,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:07:52,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:52,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219744396] [2023-11-19 05:07:52,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219744396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:52,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:52,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:07:52,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012849439] [2023-11-19 05:07:52,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:52,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:07:52,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:52,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:07:52,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:07:52,176 INFO L87 Difference]: Start difference. First operand has 676 states, 406 states have (on average 1.3399014778325122) internal successors, (544), 423 states have internal predecessors, (544), 206 states have call successors, (206), 63 states have call predecessors, (206), 62 states have return successors, (203), 202 states have call predecessors, (203), 203 states have call successors, (203) Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:07:53,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:53,521 INFO L93 Difference]: Finished difference Result 2013 states and 2865 transitions. [2023-11-19 05:07:53,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:07:53,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-11-19 05:07:53,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:53,559 INFO L225 Difference]: With dead ends: 2013 [2023-11-19 05:07:53,559 INFO L226 Difference]: Without dead ends: 1305 [2023-11-19 05:07:53,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:07:53,573 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 933 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:53,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 2590 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 05:07:53,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2023-11-19 05:07:53,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1301. [2023-11-19 05:07:53,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 785 states have (on average 1.3235668789808916) internal successors, (1039), 809 states have internal predecessors, (1039), 394 states have call successors, (394), 122 states have call predecessors, (394), 121 states have return successors, (401), 391 states have call predecessors, (401), 393 states have call successors, (401) [2023-11-19 05:07:53,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1834 transitions. [2023-11-19 05:07:53,793 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1834 transitions. Word has length 26 [2023-11-19 05:07:53,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:53,793 INFO L495 AbstractCegarLoop]: Abstraction has 1301 states and 1834 transitions. [2023-11-19 05:07:53,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:07:53,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1834 transitions. [2023-11-19 05:07:53,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 05:07:53,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:53,811 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 05:07:53,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:07:53,812 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:53,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:53,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1183597147, now seen corresponding path program 1 times [2023-11-19 05:07:53,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:53,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751232655] [2023-11-19 05:07:53,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:53,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:53,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:07:54,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:54,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751232655] [2023-11-19 05:07:54,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751232655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:54,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:54,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:07:54,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857957742] [2023-11-19 05:07:54,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:54,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:54,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:54,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:54,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:54,010 INFO L87 Difference]: Start difference. First operand 1301 states and 1834 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2023-11-19 05:07:55,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:55,014 INFO L93 Difference]: Finished difference Result 2673 states and 3758 transitions. [2023-11-19 05:07:55,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:55,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 66 [2023-11-19 05:07:55,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:55,026 INFO L225 Difference]: With dead ends: 2673 [2023-11-19 05:07:55,026 INFO L226 Difference]: Without dead ends: 1377 [2023-11-19 05:07:55,037 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 [2023-11-19 05:07:55,038 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 75 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:55,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1580 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 05:07:55,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2023-11-19 05:07:55,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1371. [2023-11-19 05:07:55,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 835 states have (on average 1.325748502994012) internal successors, (1107), 860 states have internal predecessors, (1107), 405 states have call successors, (405), 131 states have call predecessors, (405), 130 states have return successors, (412), 401 states have call predecessors, (412), 404 states have call successors, (412) [2023-11-19 05:07:55,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1924 transitions. [2023-11-19 05:07:55,196 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1924 transitions. Word has length 66 [2023-11-19 05:07:55,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:55,196 INFO L495 AbstractCegarLoop]: Abstraction has 1371 states and 1924 transitions. [2023-11-19 05:07:55,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2023-11-19 05:07:55,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1924 transitions. [2023-11-19 05:07:55,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-19 05:07:55,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:55,205 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:55,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:07:55,206 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:55,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:55,206 INFO L85 PathProgramCache]: Analyzing trace with hash -503334726, now seen corresponding path program 1 times [2023-11-19 05:07:55,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:55,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155753302] [2023-11-19 05:07:55,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:55,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 05:07:55,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:55,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155753302] [2023-11-19 05:07:55,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155753302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:55,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:55,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:07:55,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091941657] [2023-11-19 05:07:55,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:55,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:55,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:55,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:55,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:55,399 INFO L87 Difference]: Start difference. First operand 1371 states and 1924 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 05:07:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:56,674 INFO L93 Difference]: Finished difference Result 3725 states and 5196 transitions. [2023-11-19 05:07:56,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:56,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 87 [2023-11-19 05:07:56,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:56,700 INFO L225 Difference]: With dead ends: 3725 [2023-11-19 05:07:56,700 INFO L226 Difference]: Without dead ends: 2375 [2023-11-19 05:07:56,710 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 [2023-11-19 05:07:56,715 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 820 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:56,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 1526 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 05:07:56,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2023-11-19 05:07:56,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 2369. [2023-11-19 05:07:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2369 states, 1453 states have (on average 1.3041982105987613) internal successors, (1895), 1489 states have internal predecessors, (1895), 674 states have call successors, (674), 242 states have call predecessors, (674), 241 states have return successors, (684), 667 states have call predecessors, (684), 673 states have call successors, (684) [2023-11-19 05:07:56,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2369 states to 2369 states and 3253 transitions. [2023-11-19 05:07:56,905 INFO L78 Accepts]: Start accepts. Automaton has 2369 states and 3253 transitions. Word has length 87 [2023-11-19 05:07:56,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:56,906 INFO L495 AbstractCegarLoop]: Abstraction has 2369 states and 3253 transitions. [2023-11-19 05:07:56,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 05:07:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2369 states and 3253 transitions. [2023-11-19 05:07:56,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-19 05:07:56,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:56,912 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:56,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:07:56,913 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:56,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:56,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1452367512, now seen corresponding path program 1 times [2023-11-19 05:07:56,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:56,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287049275] [2023-11-19 05:07:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:56,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:57,106 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 05:07:57,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:57,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287049275] [2023-11-19 05:07:57,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287049275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:57,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:57,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:07:57,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080297937] [2023-11-19 05:07:57,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:57,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:57,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:57,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:57,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:57,112 INFO L87 Difference]: Start difference. First operand 2369 states and 3253 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-19 05:07:57,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:57,956 INFO L93 Difference]: Finished difference Result 3586 states and 4935 transitions. [2023-11-19 05:07:57,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:57,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 87 [2023-11-19 05:07:57,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:57,974 INFO L225 Difference]: With dead ends: 3586 [2023-11-19 05:07:57,975 INFO L226 Difference]: Without dead ends: 2377 [2023-11-19 05:07:57,981 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 [2023-11-19 05:07:57,982 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 4 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:57,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1610 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:07:57,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2023-11-19 05:07:58,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 2377. [2023-11-19 05:07:58,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2377 states, 1459 states have (on average 1.3029472241261137) internal successors, (1901), 1497 states have internal predecessors, (1901), 674 states have call successors, (674), 242 states have call predecessors, (674), 243 states have return successors, (686), 667 states have call predecessors, (686), 673 states have call successors, (686) [2023-11-19 05:07:58,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 3261 transitions. [2023-11-19 05:07:58,149 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 3261 transitions. Word has length 87 [2023-11-19 05:07:58,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:58,151 INFO L495 AbstractCegarLoop]: Abstraction has 2377 states and 3261 transitions. [2023-11-19 05:07:58,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-19 05:07:58,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 3261 transitions. [2023-11-19 05:07:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 05:07:58,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:58,157 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:58,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:07:58,157 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:58,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:58,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1682869321, now seen corresponding path program 1 times [2023-11-19 05:07:58,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:58,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608665640] [2023-11-19 05:07:58,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:58,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 05:07:58,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:58,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608665640] [2023-11-19 05:07:58,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608665640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:58,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:58,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 05:07:58,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565025659] [2023-11-19 05:07:58,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:58,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 05:07:58,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:58,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 05:07:58,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:07:58,836 INFO L87 Difference]: Start difference. First operand 2377 states and 3261 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 05:08:05,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:05,447 INFO L93 Difference]: Finished difference Result 4885 states and 6731 transitions. [2023-11-19 05:08:05,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 05:08:05,447 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 88 [2023-11-19 05:08:05,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:05,466 INFO L225 Difference]: With dead ends: 4885 [2023-11-19 05:08:05,466 INFO L226 Difference]: Without dead ends: 2529 [2023-11-19 05:08:05,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:08:05,477 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 1651 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 4387 mSolverCounterSat, 1031 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 5418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1031 IncrementalHoareTripleChecker+Valid, 4387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:05,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 1870 Invalid, 5418 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1031 Valid, 4387 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-11-19 05:08:05,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2023-11-19 05:08:05,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 2485. [2023-11-19 05:08:05,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 1525 states have (on average 1.2990163934426229) internal successors, (1981), 1567 states have internal predecessors, (1981), 714 states have call successors, (714), 242 states have call predecessors, (714), 245 states have return successors, (727), 707 states have call predecessors, (727), 713 states have call successors, (727) [2023-11-19 05:08:05,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 3422 transitions. [2023-11-19 05:08:05,650 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 3422 transitions. Word has length 88 [2023-11-19 05:08:05,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:05,655 INFO L495 AbstractCegarLoop]: Abstraction has 2485 states and 3422 transitions. [2023-11-19 05:08:05,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 05:08:05,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 3422 transitions. [2023-11-19 05:08:05,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-19 05:08:05,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:05,665 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:05,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:08:05,666 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:05,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:05,667 INFO L85 PathProgramCache]: Analyzing trace with hash 741383072, now seen corresponding path program 1 times [2023-11-19 05:08:05,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:05,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389870095] [2023-11-19 05:08:05,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:05,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-19 05:08:06,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:06,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389870095] [2023-11-19 05:08:06,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389870095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:06,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:06,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:08:06,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103818893] [2023-11-19 05:08:06,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:06,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:08:06,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:06,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:08:06,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:08:06,169 INFO L87 Difference]: Start difference. First operand 2485 states and 3422 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-19 05:08:07,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:07,639 INFO L93 Difference]: Finished difference Result 4975 states and 6889 transitions. [2023-11-19 05:08:07,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:08:07,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2023-11-19 05:08:07,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:07,658 INFO L225 Difference]: With dead ends: 4975 [2023-11-19 05:08:07,659 INFO L226 Difference]: Without dead ends: 2511 [2023-11-19 05:08:07,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:08:07,671 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 2 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:07,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3223 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 05:08:07,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2023-11-19 05:08:07,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2501. [2023-11-19 05:08:07,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2501 states, 1537 states have (on average 1.2966818477553677) internal successors, (1993), 1579 states have internal predecessors, (1993), 714 states have call successors, (714), 242 states have call predecessors, (714), 249 states have return successors, (735), 711 states have call predecessors, (735), 713 states have call successors, (735) [2023-11-19 05:08:07,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2501 states to 2501 states and 3442 transitions. [2023-11-19 05:08:07,841 INFO L78 Accepts]: Start accepts. Automaton has 2501 states and 3442 transitions. Word has length 112 [2023-11-19 05:08:07,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:07,843 INFO L495 AbstractCegarLoop]: Abstraction has 2501 states and 3442 transitions. [2023-11-19 05:08:07,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-19 05:08:07,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2501 states and 3442 transitions. [2023-11-19 05:08:07,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-19 05:08:07,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:07,852 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:07,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:08:07,852 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:07,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:07,853 INFO L85 PathProgramCache]: Analyzing trace with hash -121389589, now seen corresponding path program 1 times [2023-11-19 05:08:07,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:07,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790777079] [2023-11-19 05:08:07,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:07,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:08,167 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-19 05:08:08,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:08,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790777079] [2023-11-19 05:08:08,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790777079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:08,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:08,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:08,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492870648] [2023-11-19 05:08:08,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:08,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:08,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:08,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:08,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:08,171 INFO L87 Difference]: Start difference. First operand 2501 states and 3442 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 05:08:09,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:09,005 INFO L93 Difference]: Finished difference Result 4981 states and 6854 transitions. [2023-11-19 05:08:09,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:09,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 126 [2023-11-19 05:08:09,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:09,026 INFO L225 Difference]: With dead ends: 4981 [2023-11-19 05:08:09,026 INFO L226 Difference]: Without dead ends: 2488 [2023-11-19 05:08:09,037 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 [2023-11-19 05:08:09,038 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 893 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:09,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 872 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:08:09,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2023-11-19 05:08:09,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 2488. [2023-11-19 05:08:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 1526 states have (on average 1.2863695937090434) internal successors, (1963), 1568 states have internal predecessors, (1963), 712 states have call successors, (712), 242 states have call predecessors, (712), 249 states have return successors, (731), 709 states have call predecessors, (731), 711 states have call successors, (731) [2023-11-19 05:08:09,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 3406 transitions. [2023-11-19 05:08:09,288 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 3406 transitions. Word has length 126 [2023-11-19 05:08:09,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:09,288 INFO L495 AbstractCegarLoop]: Abstraction has 2488 states and 3406 transitions. [2023-11-19 05:08:09,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 05:08:09,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 3406 transitions. [2023-11-19 05:08:09,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-19 05:08:09,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:09,298 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:09,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:08:09,298 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:09,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:09,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1653371726, now seen corresponding path program 1 times [2023-11-19 05:08:09,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:09,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240667200] [2023-11-19 05:08:09,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:09,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-19 05:08:10,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:10,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240667200] [2023-11-19 05:08:10,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240667200] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:10,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061009517] [2023-11-19 05:08:10,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:10,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:10,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:10,262 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:10,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:08:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:10,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 05:08:10,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 05:08:11,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:08:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-19 05:08:12,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061009517] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:12,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:08:12,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 10] total 24 [2023-11-19 05:08:12,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372344488] [2023-11-19 05:08:12,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:12,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 05:08:12,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:12,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 05:08:12,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2023-11-19 05:08:12,273 INFO L87 Difference]: Start difference. First operand 2488 states and 3406 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2023-11-19 05:08:19,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:19,830 INFO L93 Difference]: Finished difference Result 5756 states and 8034 transitions. [2023-11-19 05:08:19,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 05:08:19,831 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) Word has length 132 [2023-11-19 05:08:19,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:19,872 INFO L225 Difference]: With dead ends: 5756 [2023-11-19 05:08:19,872 INFO L226 Difference]: Without dead ends: 4425 [2023-11-19 05:08:19,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=239, Invalid=753, Unknown=0, NotChecked=0, Total=992 [2023-11-19 05:08:19,881 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 3803 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 3582 mSolverCounterSat, 2262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3932 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 5844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2262 IncrementalHoareTripleChecker+Valid, 3582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:19,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3932 Valid, 2290 Invalid, 5844 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2262 Valid, 3582 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-11-19 05:08:19,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4425 states. [2023-11-19 05:08:20,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4425 to 3792. [2023-11-19 05:08:20,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3792 states, 2322 states have (on average 1.2863910422049958) internal successors, (2987), 2393 states have internal predecessors, (2987), 1087 states have call successors, (1087), 359 states have call predecessors, (1087), 382 states have return successors, (1143), 1088 states have call predecessors, (1143), 1086 states have call successors, (1143) [2023-11-19 05:08:20,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 5217 transitions. [2023-11-19 05:08:20,350 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 5217 transitions. Word has length 132 [2023-11-19 05:08:20,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:20,351 INFO L495 AbstractCegarLoop]: Abstraction has 3792 states and 5217 transitions. [2023-11-19 05:08:20,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2023-11-19 05:08:20,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 5217 transitions. [2023-11-19 05:08:20,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 05:08:20,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:20,362 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:20,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:20,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b72c79-86af-402a-987e-5ef30485de78/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:20,587 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:20,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:20,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1559152415, now seen corresponding path program 1 times [2023-11-19 05:08:20,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:20,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605297467] [2023-11-19 05:08:20,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:20,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:20,916 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-19 05:08:20,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:20,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605297467] [2023-11-19 05:08:20,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605297467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:20,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:20,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:08:20,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352179247] [2023-11-19 05:08:20,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:20,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:08:20,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:20,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:08:20,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:08:20,919 INFO L87 Difference]: Start difference. First operand 3792 states and 5217 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 05:08:22,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:22,283 INFO L93 Difference]: Finished difference Result 6449 states and 8912 transitions. [2023-11-19 05:08:22,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:08:22,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 133 [2023-11-19 05:08:22,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:22,329 INFO L225 Difference]: With dead ends: 6449 [2023-11-19 05:08:22,329 INFO L226 Difference]: Without dead ends: 3820 [2023-11-19 05:08:22,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:08:22,342 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 10 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2413 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:22,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2413 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 05:08:22,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3820 states. [2023-11-19 05:08:22,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3820 to 3802. [2023-11-19 05:08:22,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3802 states, 2332 states have (on average 1.2877358490566038) internal successors, (3003), 2403 states have internal predecessors, (3003), 1087 states have call successors, (1087), 359 states have call predecessors, (1087), 382 states have return successors, (1143), 1088 states have call predecessors, (1143), 1086 states have call successors, (1143) [2023-11-19 05:08:22,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3802 states to 3802 states and 5233 transitions. [2023-11-19 05:08:22,707 INFO L78 Accepts]: Start accepts. Automaton has 3802 states and 5233 transitions. Word has length 133 [2023-11-19 05:08:22,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:22,708 INFO L495 AbstractCegarLoop]: Abstraction has 3802 states and 5233 transitions. [2023-11-19 05:08:22,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 05:08:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 3802 states and 5233 transitions. [2023-11-19 05:08:22,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-19 05:08:22,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:22,719 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:22,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 05:08:22,719 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:22,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:22,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2056987130, now seen corresponding path program 1 times [2023-11-19 05:08:22,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:22,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046258768] [2023-11-19 05:08:22,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:22,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat