./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 cf1a7837 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_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX/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_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX --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-cf1a783 [2023-11-12 00:57:33,585 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:57:33,668 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:57:33,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:57:33,682 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:57:33,722 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:57:33,723 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:57:33,723 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:57:33,725 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:57:33,730 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:57:33,730 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:57:33,731 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:57:33,731 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:57:33,733 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:57:33,733 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:57:33,734 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:57:33,734 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:57:33,734 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:57:33,735 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:57:33,735 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:57:33,736 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:57:33,736 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:57:33,737 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:57:33,738 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:57:33,738 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:57:33,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:57:33,739 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:57:33,739 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:57:33,740 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:57:33,740 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:57:33,742 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:57:33,742 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:57:33,742 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:57:33,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:57:33,743 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:57:33,743 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:57:33,743 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:57:33,743 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:57:33,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:57:33,744 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:57:33,744 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:57:33,744 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:57:33,745 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_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71101d2b79b59e25da9ba6ac44f6028cc3034769032ea6dc2bebcfbbe6cd49e1 [2023-11-12 00:57:34,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:57:34,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:57:34,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:57:34,121 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:57:34,122 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:57:34,123 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX/../../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 [2023-11-12 00:57:37,187 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:57:37,778 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:57:37,779 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a77fb8a4-a0be-4950-bb6a-a25138741022/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 [2023-11-12 00:57:37,824 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX/data/8f06cb3a4/bdc3650b6de94310b6f4df2f05df76c5/FLAGb3251f912 [2023-11-12 00:57:37,841 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX/data/8f06cb3a4/bdc3650b6de94310b6f4df2f05df76c5 [2023-11-12 00:57:37,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:57:37,851 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:57:37,855 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:57:37,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:57:37,860 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:57:37,861 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:57:37" (1/1) ... [2023-11-12 00:57:37,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a777977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:37, skipping insertion in model container [2023-11-12 00:57:37,863 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:57:37" (1/1) ... [2023-11-12 00:57:38,029 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:57:38,860 WARN L635 FunctionHandler]: implicit declaration of function ldv_assume [2023-11-12 00:57:39,019 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_a77fb8a4-a0be-4950-bb6a-a25138741022/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] [2023-11-12 00:57:39,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:57:39,499 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:57:39,758 WARN L635 FunctionHandler]: implicit declaration of function ldv_assume [2023-11-12 00:57:39,782 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_a77fb8a4-a0be-4950-bb6a-a25138741022/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] [2023-11-12 00:57:39,898 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] [2023-11-12 00:57:40,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:57:40,138 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:40,138 WARN L672 CHandler]: The function ldv_assume is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:40,139 WARN L672 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:40,146 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:57:40,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:40 WrapperNode [2023-11-12 00:57:40,148 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:57:40,149 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:57:40,149 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:57:40,149 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:57:40,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:40" (1/1) ... [2023-11-12 00:57:40,241 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:40" (1/1) ... [2023-11-12 00:57:40,391 INFO L138 Inliner]: procedures = 185, calls = 866, calls flagged for inlining = 75, calls inlined = 64, statements flattened = 2341 [2023-11-12 00:57:40,391 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:57:40,392 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:57:40,392 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:57:40,392 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:57:40,402 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:40" (1/1) ... [2023-11-12 00:57:40,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:40" (1/1) ... [2023-11-12 00:57:40,440 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:40" (1/1) ... [2023-11-12 00:57:40,441 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:40" (1/1) ... [2023-11-12 00:57:40,530 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:40" (1/1) ... [2023-11-12 00:57:40,545 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:40" (1/1) ... [2023-11-12 00:57:40,564 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:40" (1/1) ... [2023-11-12 00:57:40,580 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:40" (1/1) ... [2023-11-12 00:57:40,601 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:57:40,602 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:57:40,604 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:57:40,604 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:57:40,605 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:40" (1/1) ... [2023-11-12 00:57:40,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:57:40,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:57:40,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:57:40,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:57:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure broadcast_write [2023-11-12 00:57:40,692 INFO L138 BoogieDeclarations]: Found implementation of procedure broadcast_write [2023-11-12 00:57:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-12 00:57:40,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-12 00:57:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure genphy_config_aneg [2023-11-12 00:57:40,694 INFO L138 BoogieDeclarations]: Found implementation of procedure genphy_config_aneg [2023-11-12 00:57:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-12 00:57:40,695 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-12 00:57:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-12 00:57:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_put [2023-11-12 00:57:40,695 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_put [2023-11-12 00:57:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-12 00:57:40,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-12 00:57:40,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:57:40,697 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2023-11-12 00:57:40,697 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2023-11-12 00:57:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure phy2txts [2023-11-12 00:57:40,698 INFO L138 BoogieDeclarations]: Found implementation of procedure phy2txts [2023-11-12 00:57:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2023-11-12 00:57:40,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2023-11-12 00:57:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ts_info [2023-11-12 00:57:40,700 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ts_info [2023-11-12 00:57:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 00:57:40,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 00:57:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2023-11-12 00:57:40,701 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2023-11-12 00:57:40,701 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_write [2023-11-12 00:57:40,701 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_write [2023-11-12 00:57:40,701 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_intr [2023-11-12 00:57:40,702 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_intr [2023-11-12 00:57:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure tdr_write [2023-11-12 00:57:40,702 INFO L138 BoogieDeclarations]: Found implementation of procedure tdr_write [2023-11-12 00:57:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2023-11-12 00:57:40,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2023-11-12 00:57:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 00:57:40,703 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 00:57:40,703 INFO L130 BoogieDeclarations]: Found specification of procedure exts_chan_to_edata [2023-11-12 00:57:40,703 INFO L138 BoogieDeclarations]: Found implementation of procedure exts_chan_to_edata [2023-11-12 00:57:40,703 INFO L130 BoogieDeclarations]: Found specification of procedure skb_complete_tx_timestamp [2023-11-12 00:57:40,703 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_complete_tx_timestamp [2023-11-12 00:57:40,703 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-11-12 00:57:40,703 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-11-12 00:57:40,704 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-11-12 00:57:40,704 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-11-12 00:57:40,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:57:40,704 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-12 00:57:40,704 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-12 00:57:40,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 00:57:40,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 00:57:40,705 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_rxtstamp [2023-11-12 00:57:40,705 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_rxtstamp [2023-11-12 00:57:40,705 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-12 00:57:40,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-12 00:57:40,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 00:57:40,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 00:57:40,706 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2023-11-12 00:57:40,706 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2023-11-12 00:57:40,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:57:40,707 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:57:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:57:40,708 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:57:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:57:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure prune_rx_ts [2023-11-12 00:57:40,709 INFO L138 BoogieDeclarations]: Found implementation of procedure prune_rx_ts [2023-11-12 00:57:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-12 00:57:40,709 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-12 00:57:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-12 00:57:40,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-12 00:57:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:57:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_init [2023-11-12 00:57:40,711 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_init [2023-11-12 00:57:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:57:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:57:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-12 00:57:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-12 00:57:40,712 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-12 00:57:40,712 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-12 00:57:40,712 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_ktime [2023-11-12 00:57:40,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_ktime [2023-11-12 00:57:40,712 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-11-12 00:57:40,712 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-11-12 00:57:40,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:57:40,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2023-11-12 00:57:40,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2023-11-12 00:57:40,714 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-12 00:57:40,714 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-12 00:57:40,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-12 00:57:40,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-12 00:57:40,714 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-12 00:57:40,714 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-12 00:57:40,715 INFO L130 BoogieDeclarations]: Found specification of procedure enable_status_frames [2023-11-12 00:57:40,715 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_status_frames [2023-11-12 00:57:40,715 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_hwtstamp [2023-11-12 00:57:40,715 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_hwtstamp [2023-11-12 00:57:40,715 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-12 00:57:40,715 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-12 00:57:40,715 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2023-11-12 00:57:40,716 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2023-11-12 00:57:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2023-11-12 00:57:40,716 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2023-11-12 00:57:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:57:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:57:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2023-11-12 00:57:40,716 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2023-11-12 00:57:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-12 00:57:40,717 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-12 00:57:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 00:57:40,717 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 00:57:40,718 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_get [2023-11-12 00:57:40,718 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_get [2023-11-12 00:57:40,718 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ack_interrupt [2023-11-12 00:57:40,718 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ack_interrupt [2023-11-12 00:57:40,719 INFO L130 BoogieDeclarations]: Found specification of procedure ext_read [2023-11-12 00:57:40,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_read [2023-11-12 00:57:40,719 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-11-12 00:57:40,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-11-12 00:57:40,720 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-12 00:57:40,720 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-12 00:57:40,720 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-12 00:57:40,720 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-12 00:57:40,720 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-12 00:57:40,721 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-12 00:57:40,721 INFO L130 BoogieDeclarations]: Found specification of procedure skb_mac_header [2023-11-12 00:57:40,721 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_mac_header [2023-11-12 00:57:40,721 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_txtstamp [2023-11-12 00:57:40,721 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_txtstamp [2023-11-12 00:57:40,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:57:40,721 INFO L130 BoogieDeclarations]: Found specification of procedure enable_broadcast [2023-11-12 00:57:40,722 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_broadcast [2023-11-12 00:57:40,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-12 00:57:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-12 00:57:40,723 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-12 00:57:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-12 00:57:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:57:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:57:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_timespec [2023-11-12 00:57:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_timespec [2023-11-12 00:57:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure ext_write [2023-11-12 00:57:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_write [2023-11-12 00:57:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-12 00:57:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-12 00:57:41,328 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:57:41,335 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:57:41,878 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-12 00:57:44,031 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:57:45,016 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:57:45,016 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-12 00:57:45,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:57:45 BoogieIcfgContainer [2023-11-12 00:57:45,023 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:57:45,028 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:57:45,030 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:57:45,033 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:57:45,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:57:37" (1/3) ... [2023-11-12 00:57:45,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57cd4c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:57:45, skipping insertion in model container [2023-11-12 00:57:45,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:40" (2/3) ... [2023-11-12 00:57:45,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57cd4c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:57:45, skipping insertion in model container [2023-11-12 00:57:45,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:57:45" (3/3) ... [2023-11-12 00:57:45,044 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 [2023-11-12 00:57:45,065 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:57:45,065 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:57:45,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:57:45,141 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;@10bfc605, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:57:45,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:57:45,183 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) [2023-11-12 00:57:45,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-12 00:57:45,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:45,199 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] [2023-11-12 00:57:45,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:45,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:45,205 INFO L85 PathProgramCache]: Analyzing trace with hash -2113175941, now seen corresponding path program 1 times [2023-11-12 00:57:45,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:45,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115955503] [2023-11-12 00:57:45,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:45,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:45,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:57:45,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:45,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115955503] [2023-11-12 00:57:45,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115955503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:45,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:45,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:57:45,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435567278] [2023-11-12 00:57:45,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:45,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:57:45,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:45,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:57:45,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:57:45,984 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) [2023-11-12 00:57:47,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:47,501 INFO L93 Difference]: Finished difference Result 2013 states and 2865 transitions. [2023-11-12 00:57:47,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:57:47,507 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 [2023-11-12 00:57:47,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:47,546 INFO L225 Difference]: With dead ends: 2013 [2023-11-12 00:57:47,615 INFO L226 Difference]: Without dead ends: 1305 [2023-11-12 00:57:47,636 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 [2023-11-12 00:57:47,643 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 933 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:47,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 2590 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 00:57:47,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2023-11-12 00:57:47,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1301. [2023-11-12 00:57:47,860 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) [2023-11-12 00:57:47,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1834 transitions. [2023-11-12 00:57:47,884 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1834 transitions. Word has length 26 [2023-11-12 00:57:47,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:47,884 INFO L495 AbstractCegarLoop]: Abstraction has 1301 states and 1834 transitions. [2023-11-12 00:57:47,885 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) [2023-11-12 00:57:47,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1834 transitions. [2023-11-12 00:57:47,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-12 00:57:47,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:47,905 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] [2023-11-12 00:57:47,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:57:47,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:47,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:47,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1183597147, now seen corresponding path program 1 times [2023-11-12 00:57:47,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:47,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772474120] [2023-11-12 00:57:47,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:47,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:48,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:57:48,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:48,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772474120] [2023-11-12 00:57:48,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772474120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:48,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:48,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:57:48,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065813567] [2023-11-12 00:57:48,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:48,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:57:48,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:48,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:57:48,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:57:48,115 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) [2023-11-12 00:57:48,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:48,987 INFO L93 Difference]: Finished difference Result 2673 states and 3758 transitions. [2023-11-12 00:57:48,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:57:48,987 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 [2023-11-12 00:57:48,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:48,998 INFO L225 Difference]: With dead ends: 2673 [2023-11-12 00:57:48,998 INFO L226 Difference]: Without dead ends: 1377 [2023-11-12 00:57:49,005 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 [2023-11-12 00:57:49,006 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 75 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:49,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1580 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 00:57:49,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2023-11-12 00:57:49,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1371. [2023-11-12 00:57:49,075 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) [2023-11-12 00:57:49,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1924 transitions. [2023-11-12 00:57:49,089 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1924 transitions. Word has length 66 [2023-11-12 00:57:49,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:49,090 INFO L495 AbstractCegarLoop]: Abstraction has 1371 states and 1924 transitions. [2023-11-12 00:57:49,090 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) [2023-11-12 00:57:49,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1924 transitions. [2023-11-12 00:57:49,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-12 00:57:49,097 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:49,097 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] [2023-11-12 00:57:49,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:57:49,098 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:49,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:49,099 INFO L85 PathProgramCache]: Analyzing trace with hash -503334726, now seen corresponding path program 1 times [2023-11-12 00:57:49,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:49,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993218325] [2023-11-12 00:57:49,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:49,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:49,338 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-12 00:57:49,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:49,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993218325] [2023-11-12 00:57:49,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993218325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:49,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:49,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:57:49,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38306348] [2023-11-12 00:57:49,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:49,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:57:49,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:49,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:57:49,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:57:49,345 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) [2023-11-12 00:57:50,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:50,496 INFO L93 Difference]: Finished difference Result 3725 states and 5196 transitions. [2023-11-12 00:57:50,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:57:50,497 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 [2023-11-12 00:57:50,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:50,519 INFO L225 Difference]: With dead ends: 3725 [2023-11-12 00:57:50,519 INFO L226 Difference]: Without dead ends: 2375 [2023-11-12 00:57:50,530 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 [2023-11-12 00:57:50,534 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 820 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:50,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 1526 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-12 00:57:50,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2023-11-12 00:57:50,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 2369. [2023-11-12 00:57:50,665 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) [2023-11-12 00:57:50,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2369 states to 2369 states and 3253 transitions. [2023-11-12 00:57:50,688 INFO L78 Accepts]: Start accepts. Automaton has 2369 states and 3253 transitions. Word has length 87 [2023-11-12 00:57:50,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:50,689 INFO L495 AbstractCegarLoop]: Abstraction has 2369 states and 3253 transitions. [2023-11-12 00:57:50,689 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) [2023-11-12 00:57:50,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2369 states and 3253 transitions. [2023-11-12 00:57:50,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-12 00:57:50,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:50,696 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] [2023-11-12 00:57:50,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:57:50,696 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:50,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:50,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1452367512, now seen corresponding path program 1 times [2023-11-12 00:57:50,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:50,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175662646] [2023-11-12 00:57:50,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:50,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:50,938 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-12 00:57:50,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:50,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175662646] [2023-11-12 00:57:50,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175662646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:50,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:50,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:57:50,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528756734] [2023-11-12 00:57:50,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:50,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:57:50,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:50,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:57:50,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:57:50,941 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) [2023-11-12 00:57:52,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:52,132 INFO L93 Difference]: Finished difference Result 3586 states and 4935 transitions. [2023-11-12 00:57:52,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:57:52,133 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 [2023-11-12 00:57:52,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:52,152 INFO L225 Difference]: With dead ends: 3586 [2023-11-12 00:57:52,153 INFO L226 Difference]: Without dead ends: 2377 [2023-11-12 00:57:52,159 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 [2023-11-12 00:57:52,161 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 4 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:52,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1610 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-12 00:57:52,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2023-11-12 00:57:52,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 2377. [2023-11-12 00:57:52,294 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) [2023-11-12 00:57:52,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 3261 transitions. [2023-11-12 00:57:52,320 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 3261 transitions. Word has length 87 [2023-11-12 00:57:52,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:52,321 INFO L495 AbstractCegarLoop]: Abstraction has 2377 states and 3261 transitions. [2023-11-12 00:57:52,321 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) [2023-11-12 00:57:52,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 3261 transitions. [2023-11-12 00:57:52,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-12 00:57:52,327 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:52,328 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] [2023-11-12 00:57:52,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:57:52,328 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:52,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:52,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1682869321, now seen corresponding path program 1 times [2023-11-12 00:57:52,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:52,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33183233] [2023-11-12 00:57:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:52,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:53,038 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-12 00:57:53,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:53,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33183233] [2023-11-12 00:57:53,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33183233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:53,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:53,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 00:57:53,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493005221] [2023-11-12 00:57:53,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:53,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 00:57:53,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:53,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 00:57:53,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:57:53,042 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) [2023-11-12 00:58:00,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:00,870 INFO L93 Difference]: Finished difference Result 4885 states and 6731 transitions. [2023-11-12 00:58:00,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 00:58:00,871 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 [2023-11-12 00:58:00,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:00,890 INFO L225 Difference]: With dead ends: 4885 [2023-11-12 00:58:00,890 INFO L226 Difference]: Without dead ends: 2529 [2023-11-12 00:58:00,901 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 [2023-11-12 00:58:00,902 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1651 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 4385 mSolverCounterSat, 1031 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 5416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1031 IncrementalHoareTripleChecker+Valid, 4385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:00,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 1858 Invalid, 5416 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1031 Valid, 4385 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-11-12 00:58:00,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2023-11-12 00:58:01,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 2485. [2023-11-12 00:58:01,067 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) [2023-11-12 00:58:01,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 3422 transitions. [2023-11-12 00:58:01,088 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 3422 transitions. Word has length 88 [2023-11-12 00:58:01,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:01,088 INFO L495 AbstractCegarLoop]: Abstraction has 2485 states and 3422 transitions. [2023-11-12 00:58:01,089 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) [2023-11-12 00:58:01,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 3422 transitions. [2023-11-12 00:58:01,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-12 00:58:01,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:01,096 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] [2023-11-12 00:58:01,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:58:01,097 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:58:01,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:01,097 INFO L85 PathProgramCache]: Analyzing trace with hash 741383072, now seen corresponding path program 1 times [2023-11-12 00:58:01,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:01,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753967640] [2023-11-12 00:58:01,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:01,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-12 00:58:01,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:58:01,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753967640] [2023-11-12 00:58:01,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753967640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:58:01,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:58:01,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:58:01,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348261962] [2023-11-12 00:58:01,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:01,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:58:01,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:58:01,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:58:01,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:58:01,577 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) [2023-11-12 00:58:03,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:03,407 INFO L93 Difference]: Finished difference Result 4975 states and 6889 transitions. [2023-11-12 00:58:03,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:58:03,408 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 [2023-11-12 00:58:03,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:03,427 INFO L225 Difference]: With dead ends: 4975 [2023-11-12 00:58:03,427 INFO L226 Difference]: Without dead ends: 2511 [2023-11-12 00:58:03,439 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 [2023-11-12 00:58:03,440 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 2 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:03,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3223 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-12 00:58:03,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2023-11-12 00:58:03,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2501. [2023-11-12 00:58:03,609 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) [2023-11-12 00:58:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2501 states to 2501 states and 3442 transitions. [2023-11-12 00:58:03,625 INFO L78 Accepts]: Start accepts. Automaton has 2501 states and 3442 transitions. Word has length 112 [2023-11-12 00:58:03,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:03,626 INFO L495 AbstractCegarLoop]: Abstraction has 2501 states and 3442 transitions. [2023-11-12 00:58:03,626 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) [2023-11-12 00:58:03,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2501 states and 3442 transitions. [2023-11-12 00:58:03,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-12 00:58:03,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:03,634 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] [2023-11-12 00:58:03,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:58:03,634 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:58:03,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:03,635 INFO L85 PathProgramCache]: Analyzing trace with hash -121389589, now seen corresponding path program 1 times [2023-11-12 00:58:03,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:03,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575566424] [2023-11-12 00:58:03,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:03,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:04,002 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-12 00:58:04,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:58:04,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575566424] [2023-11-12 00:58:04,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575566424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:58:04,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:58:04,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:58:04,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393596743] [2023-11-12 00:58:04,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:04,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:58:04,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:58:04,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:58:04,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:58:04,006 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) [2023-11-12 00:58:04,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:04,649 INFO L93 Difference]: Finished difference Result 4981 states and 6854 transitions. [2023-11-12 00:58:04,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:58:04,650 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 [2023-11-12 00:58:04,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:04,671 INFO L225 Difference]: With dead ends: 4981 [2023-11-12 00:58:04,671 INFO L226 Difference]: Without dead ends: 2488 [2023-11-12 00:58:04,683 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 [2023-11-12 00:58:04,684 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 893 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:04,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 872 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:58:04,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2023-11-12 00:58:04,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 2488. [2023-11-12 00:58:04,860 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) [2023-11-12 00:58:04,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 3406 transitions. [2023-11-12 00:58:04,874 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 3406 transitions. Word has length 126 [2023-11-12 00:58:04,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:04,875 INFO L495 AbstractCegarLoop]: Abstraction has 2488 states and 3406 transitions. [2023-11-12 00:58:04,875 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) [2023-11-12 00:58:04,875 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 3406 transitions. [2023-11-12 00:58:04,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-12 00:58:04,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:04,883 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] [2023-11-12 00:58:04,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:58:04,884 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:58:04,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:04,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1653371726, now seen corresponding path program 1 times [2023-11-12 00:58:04,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:04,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085694322] [2023-11-12 00:58:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:04,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:05,825 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-12 00:58:05,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:58:05,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085694322] [2023-11-12 00:58:05,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085694322] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:58:05,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96542287] [2023-11-12 00:58:05,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:05,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:58:05,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:58:05,833 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:58:05,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:58:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:06,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 00:58:06,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:58:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-12 00:58:06,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:58:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-12 00:58:07,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96542287] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 00:58:07,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:58:07,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 10] total 24 [2023-11-12 00:58:07,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733584575] [2023-11-12 00:58:07,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:07,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:58:07,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:58:07,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:58:07,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2023-11-12 00:58:07,882 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) [2023-11-12 00:58:16,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:16,277 INFO L93 Difference]: Finished difference Result 5756 states and 8034 transitions. [2023-11-12 00:58:16,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 00:58:16,278 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 [2023-11-12 00:58:16,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:16,311 INFO L225 Difference]: With dead ends: 5756 [2023-11-12 00:58:16,311 INFO L226 Difference]: Without dead ends: 4425 [2023-11-12 00:58:16,318 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 [2023-11-12 00:58:16,319 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 3807 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 3587 mSolverCounterSat, 2273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3938 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 5860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2273 IncrementalHoareTripleChecker+Valid, 3587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:16,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3938 Valid, 2289 Invalid, 5860 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2273 Valid, 3587 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-11-12 00:58:16,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4425 states. [2023-11-12 00:58:16,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4425 to 3792. [2023-11-12 00:58:16,686 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) [2023-11-12 00:58:16,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 5217 transitions. [2023-11-12 00:58:16,713 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 5217 transitions. Word has length 132 [2023-11-12 00:58:16,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:16,714 INFO L495 AbstractCegarLoop]: Abstraction has 3792 states and 5217 transitions. [2023-11-12 00:58:16,715 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) [2023-11-12 00:58:16,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 5217 transitions. [2023-11-12 00:58:16,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-12 00:58:16,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:16,724 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] [2023-11-12 00:58:16,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:58:16,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a77fb8a4-a0be-4950-bb6a-a25138741022/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 00:58:16,939 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:58:16,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:16,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1559152415, now seen corresponding path program 1 times [2023-11-12 00:58:16,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:16,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117840648] [2023-11-12 00:58:16,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:16,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:17,253 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-12 00:58:17,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:58:17,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117840648] [2023-11-12 00:58:17,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117840648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:58:17,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:58:17,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:58:17,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557700525] [2023-11-12 00:58:17,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:17,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:58:17,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:58:17,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:58:17,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:58:17,257 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) [2023-11-12 00:58:19,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:19,050 INFO L93 Difference]: Finished difference Result 6449 states and 8912 transitions. [2023-11-12 00:58:19,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:58:19,051 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 [2023-11-12 00:58:19,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:19,081 INFO L225 Difference]: With dead ends: 6449 [2023-11-12 00:58:19,082 INFO L226 Difference]: Without dead ends: 3820 [2023-11-12 00:58:19,093 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 [2023-11-12 00:58:19,095 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 10 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:19,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2413 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-12 00:58:19,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3820 states. [2023-11-12 00:58:19,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3820 to 3802. [2023-11-12 00:58:19,436 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) [2023-11-12 00:58:19,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3802 states to 3802 states and 5233 transitions. [2023-11-12 00:58:19,457 INFO L78 Accepts]: Start accepts. Automaton has 3802 states and 5233 transitions. Word has length 133 [2023-11-12 00:58:19,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:19,458 INFO L495 AbstractCegarLoop]: Abstraction has 3802 states and 5233 transitions. [2023-11-12 00:58:19,458 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) [2023-11-12 00:58:19,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3802 states and 5233 transitions. [2023-11-12 00:58:19,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-12 00:58:19,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:19,469 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] [2023-11-12 00:58:19,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 00:58:19,469 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:58:19,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:19,470 INFO L85 PathProgramCache]: Analyzing trace with hash 2056987130, now seen corresponding path program 1 times [2023-11-12 00:58:19,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:19,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555524006] [2023-11-12 00:58:19,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:19,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms