./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--mfd--sm501.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--mfd--sm501.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 98b726a200cc424fa7bb1c37464c61d975878210ba7711cf31eb9bd278784d63 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:07:39,170 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:07:39,299 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:07:39,306 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:07:39,307 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:07:39,346 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:07:39,347 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:07:39,347 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:07:39,348 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:07:39,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:07:39,354 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:07:39,355 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:07:39,355 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:07:39,357 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:07:39,357 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:07:39,358 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:07:39,358 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:07:39,358 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:07:39,359 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:07:39,359 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:07:39,360 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:07:39,360 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:07:39,362 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:07:39,362 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:07:39,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:07:39,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:07:39,363 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:07:39,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:07:39,364 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:07:39,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:07:39,366 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:07:39,366 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:07:39,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:07:39,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:39,367 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:07:39,367 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:07:39,367 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:07:39,368 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:07:39,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:07:39,368 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:07:39,368 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:07:39,369 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:07:39,369 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_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98b726a200cc424fa7bb1c37464c61d975878210ba7711cf31eb9bd278784d63 [2023-11-19 05:07:39,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:07:39,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:07:39,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:07:39,744 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:07:39,745 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:07:39,746 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--mfd--sm501.ko-main.cil.out.i [2023-11-19 05:07:42,836 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:07:43,543 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:07:43,544 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--mfd--sm501.ko-main.cil.out.i [2023-11-19 05:07:43,587 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/bin/utaipan-verify-t7M7D8N6sZ/data/454e18d4d/757cc1f36ae1491ea034eb4853d59eb8/FLAG6d4612dea [2023-11-19 05:07:43,607 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/bin/utaipan-verify-t7M7D8N6sZ/data/454e18d4d/757cc1f36ae1491ea034eb4853d59eb8 [2023-11-19 05:07:43,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:07:43,615 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:07:43,618 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:43,618 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:07:43,623 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:07:43,624 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:43" (1/1) ... [2023-11-19 05:07:43,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a4615e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:43, skipping insertion in model container [2023-11-19 05:07:43,625 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:43" (1/1) ... [2023-11-19 05:07:43,775 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:07:45,306 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_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--mfd--sm501.ko-main.cil.out.i[171889,171902] [2023-11-19 05:07:45,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:45,420 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:07:45,499 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [3647] [2023-11-19 05:07:45,501 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [3654] [2023-11-19 05:07:45,692 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_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--mfd--sm501.ko-main.cil.out.i[171889,171902] [2023-11-19 05:07:45,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:45,829 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:07:45,837 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:07:45,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:45 WrapperNode [2023-11-19 05:07:45,838 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:45,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:45,840 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:07:45,840 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:07:45,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:45" (1/1) ... [2023-11-19 05:07:45,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:45" (1/1) ... [2023-11-19 05:07:46,125 INFO L138 Inliner]: procedures = 180, calls = 1666, calls flagged for inlining = 68, calls inlined = 60, statements flattened = 3476 [2023-11-19 05:07:46,126 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:46,127 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:07:46,128 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:07:46,128 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:07:46,137 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:45" (1/1) ... [2023-11-19 05:07:46,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:45" (1/1) ... [2023-11-19 05:07:46,174 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:45" (1/1) ... [2023-11-19 05:07:46,175 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:45" (1/1) ... [2023-11-19 05:07:46,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:45" (1/1) ... [2023-11-19 05:07:46,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:45" (1/1) ... [2023-11-19 05:07:46,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:45" (1/1) ... [2023-11-19 05:07:46,337 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:45" (1/1) ... [2023-11-19 05:07:46,368 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:07:46,369 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:07:46,369 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:07:46,369 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:07:46,370 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:45" (1/1) ... [2023-11-19 05:07:46,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:46,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:07:46,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:07:46,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:07:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure gpiochip_remove [2023-11-19 05:07:46,444 INFO L138 BoogieDeclarations]: Found implementation of procedure gpiochip_remove [2023-11-19 05:07:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-19 05:07:46,445 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-19 05:07:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-19 05:07:46,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-19 05:07:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_mdelay [2023-11-19 05:07:46,447 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_mdelay [2023-11-19 05:07:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_clock_lock_of_sm501_devdata [2023-11-19 05:07:46,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_clock_lock_of_sm501_devdata [2023-11-19 05:07:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_calc_clock [2023-11-19 05:07:46,448 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_calc_clock [2023-11-19 05:07:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_gpio_input [2023-11-19 05:07:46,448 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_gpio_input [2023-11-19 05:07:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_plat_probe [2023-11-19 05:07:46,448 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_plat_probe [2023-11-19 05:07:46,449 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-19 05:07:46,449 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-19 05:07:46,449 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_init_regs [2023-11-19 05:07:46,450 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_init_regs [2023-11-19 05:07:46,450 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_setup_uart_data [2023-11-19 05:07:46,450 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_setup_uart_data [2023-11-19 05:07:46,450 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_plat_remove [2023-11-19 05:07:46,451 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_plat_remove [2023-11-19 05:07:46,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:07:46,452 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_set_power [2023-11-19 05:07:46,452 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_set_power [2023-11-19 05:07:46,452 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_gpio_pin2nr [2023-11-19 05:07:46,453 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_gpio_pin2nr [2023-11-19 05:07:46,453 INFO L130 BoogieDeclarations]: Found specification of procedure to_sm501_gpio [2023-11-19 05:07:46,453 INFO L138 BoogieDeclarations]: Found implementation of procedure to_sm501_gpio [2023-11-19 05:07:46,453 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_unit_power [2023-11-19 05:07:46,453 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_unit_power [2023-11-19 05:07:46,453 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_dev_remove [2023-11-19 05:07:46,454 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_dev_remove [2023-11-19 05:07:46,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:07:46,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:07:46,454 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_gpio_get [2023-11-19 05:07:46,454 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_gpio_get [2023-11-19 05:07:46,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_clock_lock_of_sm501_devdata [2023-11-19 05:07:46,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_clock_lock_of_sm501_devdata [2023-11-19 05:07:46,454 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_create_mem [2023-11-19 05:07:46,455 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_create_mem [2023-11-19 05:07:46,455 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:07:46,455 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:07:46,455 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_calc_pll [2023-11-19 05:07:46,455 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_calc_pll [2023-11-19 05:07:46,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:07:46,455 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 05:07:46,455 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 05:07:46,456 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-19 05:07:46,456 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-19 05:07:46,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 05:07:46,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 05:07:46,456 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-19 05:07:46,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-19 05:07:46,456 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2023-11-19 05:07:46,456 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2023-11-19 05:07:46,457 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_create_subio [2023-11-19 05:07:46,457 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_create_subio [2023-11-19 05:07:46,457 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_register_device [2023-11-19 05:07:46,458 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_register_device [2023-11-19 05:07:46,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:07:46,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:07:46,459 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_init_dev [2023-11-19 05:07:46,459 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_init_dev [2023-11-19 05:07:46,459 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_gpio_register_chip [2023-11-19 05:07:46,459 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_gpio_register_chip [2023-11-19 05:07:46,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:07:46,460 INFO L130 BoogieDeclarations]: Found specification of procedure to_sm_device [2023-11-19 05:07:46,460 INFO L138 BoogieDeclarations]: Found implementation of procedure to_sm_device [2023-11-19 05:07:46,460 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-19 05:07:46,461 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-19 05:07:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 05:07:46,461 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 05:07:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_select_clock [2023-11-19 05:07:46,461 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_select_clock [2023-11-19 05:07:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:07:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_create_irq [2023-11-19 05:07:46,462 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_create_irq [2023-11-19 05:07:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:07:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:07:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 05:07:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_sync_regs [2023-11-19 05:07:46,462 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_sync_regs [2023-11-19 05:07:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure release_resource [2023-11-19 05:07:46,463 INFO L138 BoogieDeclarations]: Found implementation of procedure release_resource [2023-11-19 05:07:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-19 05:07:46,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-19 05:07:46,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:07:46,521 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_create_subdev [2023-11-19 05:07:46,521 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_create_subdev [2023-11-19 05:07:46,521 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_gpio_to_dev [2023-11-19 05:07:46,521 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_gpio_to_dev [2023-11-19 05:07:46,521 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2023-11-19 05:07:46,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2023-11-19 05:07:46,521 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 05:07:46,521 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 05:07:46,521 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2023-11-19 05:07:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2023-11-19 05:07:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:07:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_dump_gate [2023-11-19 05:07:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_dump_gate [2023-11-19 05:07:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-19 05:07:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-19 05:07:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-19 05:07:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-19 05:07:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:07:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2023-11-19 05:07:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2023-11-19 05:07:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 05:07:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 05:07:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_set_clock [2023-11-19 05:07:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_set_clock [2023-11-19 05:07:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_modify_reg [2023-11-19 05:07:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_modify_reg [2023-11-19 05:07:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 05:07:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 05:07:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-19 05:07:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-19 05:07:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-19 05:07:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-19 05:07:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_init_reg [2023-11-19 05:07:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_init_reg [2023-11-19 05:07:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-19 05:07:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-19 05:07:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:07:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2023-11-19 05:07:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2023-11-19 05:07:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_plat_resume [2023-11-19 05:07:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_plat_resume [2023-11-19 05:07:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure sm501_gpio_ensure_gpio [2023-11-19 05:07:46,525 INFO L138 BoogieDeclarations]: Found implementation of procedure sm501_gpio_ensure_gpio [2023-11-19 05:07:46,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:07:46,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:07:47,086 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:07:47,091 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:07:52,255 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:07:53,863 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:07:53,864 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:07:53,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:07:53 BoogieIcfgContainer [2023-11-19 05:07:53,880 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:07:53,884 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:07:53,885 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:07:53,889 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:07:53,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:07:43" (1/3) ... [2023-11-19 05:07:53,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ed21c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:07:53, skipping insertion in model container [2023-11-19 05:07:53,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:45" (2/3) ... [2023-11-19 05:07:53,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ed21c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:07:53, skipping insertion in model container [2023-11-19 05:07:53,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:07:53" (3/3) ... [2023-11-19 05:07:53,898 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--mfd--sm501.ko-main.cil.out.i [2023-11-19 05:07:53,920 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:07:53,920 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:07:54,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:07:54,029 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;@4624824f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:07:54,030 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:07:54,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 843 states, 495 states have (on average 1.2747474747474747) internal successors, (631), 509 states have internal predecessors, (631), 285 states have call successors, (285), 61 states have call predecessors, (285), 61 states have return successors, (285), 285 states have call predecessors, (285), 285 states have call successors, (285) [2023-11-19 05:07:54,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:07:54,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:54,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:54,062 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:54,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:54,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1714529726, now seen corresponding path program 1 times [2023-11-19 05:07:54,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:54,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291457173] [2023-11-19 05:07:54,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:54,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:07:54,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:54,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291457173] [2023-11-19 05:07:54,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291457173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:54,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:54,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:07:54,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104435040] [2023-11-19 05:07:54,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:54,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:54,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:54,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:54,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:54,878 INFO L87 Difference]: Start difference. First operand has 843 states, 495 states have (on average 1.2747474747474747) internal successors, (631), 509 states have internal predecessors, (631), 285 states have call successors, (285), 61 states have call predecessors, (285), 61 states have return successors, (285), 285 states have call predecessors, (285), 285 states have call successors, (285) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:07:58,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:00,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:02,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:02,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:02,754 INFO L93 Difference]: Finished difference Result 2513 states and 3621 transitions. [2023-11-19 05:08:02,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:02,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 05:08:02,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:02,786 INFO L225 Difference]: With dead ends: 2513 [2023-11-19 05:08:02,786 INFO L226 Difference]: Without dead ends: 1669 [2023-11-19 05:08:02,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:02,800 INFO L413 NwaCegarLoop]: 1048 mSDtfsCounter, 1167 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:02,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 2092 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 294 Invalid, 3 Unknown, 0 Unchecked, 7.6s Time] [2023-11-19 05:08:02,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2023-11-19 05:08:02,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1665. [2023-11-19 05:08:02,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 980 states have (on average 1.2663265306122449) internal successors, (1241), 999 states have internal predecessors, (1241), 564 states have call successors, (564), 121 states have call predecessors, (564), 120 states have return successors, (558), 558 states have call predecessors, (558), 558 states have call successors, (558) [2023-11-19 05:08:02,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2363 transitions. [2023-11-19 05:08:02,991 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2363 transitions. Word has length 12 [2023-11-19 05:08:02,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:02,991 INFO L495 AbstractCegarLoop]: Abstraction has 1665 states and 2363 transitions. [2023-11-19 05:08:02,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:02,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2363 transitions. [2023-11-19 05:08:02,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:08:02,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:02,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:02,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:08:02,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:02,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:02,996 INFO L85 PathProgramCache]: Analyzing trace with hash 597776403, now seen corresponding path program 1 times [2023-11-19 05:08:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:02,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114966040] [2023-11-19 05:08:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:02,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:03,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:03,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:03,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114966040] [2023-11-19 05:08:03,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114966040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:03,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:03,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:08:03,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354009837] [2023-11-19 05:08:03,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:03,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:03,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:03,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:03,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:03,270 INFO L87 Difference]: Start difference. First operand 1665 states and 2363 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:06,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:06,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:06,356 INFO L93 Difference]: Finished difference Result 1709 states and 2397 transitions. [2023-11-19 05:08:06,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:06,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-19 05:08:06,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:06,373 INFO L225 Difference]: With dead ends: 1709 [2023-11-19 05:08:06,374 INFO L226 Difference]: Without dead ends: 1705 [2023-11-19 05:08:06,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:06,378 INFO L413 NwaCegarLoop]: 1042 mSDtfsCounter, 1038 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:06,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 1174 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 168 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2023-11-19 05:08:06,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2023-11-19 05:08:06,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1703. [2023-11-19 05:08:06,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1004 states have (on average 1.2609561752988048) internal successors, (1266), 1021 states have internal predecessors, (1266), 564 states have call successors, (564), 135 states have call predecessors, (564), 134 states have return successors, (560), 560 states have call predecessors, (560), 560 states have call successors, (560) [2023-11-19 05:08:06,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2390 transitions. [2023-11-19 05:08:06,517 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2390 transitions. Word has length 14 [2023-11-19 05:08:06,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:06,517 INFO L495 AbstractCegarLoop]: Abstraction has 1703 states and 2390 transitions. [2023-11-19 05:08:06,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:06,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2390 transitions. [2023-11-19 05:08:06,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:08:06,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:06,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:06,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:08:06,522 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:06,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:06,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1350618769, now seen corresponding path program 1 times [2023-11-19 05:08:06,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:06,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582610548] [2023-11-19 05:08:06,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:06,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:06,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:06,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582610548] [2023-11-19 05:08:06,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582610548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:06,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:06,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:08:06,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7252368] [2023-11-19 05:08:06,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:06,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:06,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:06,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:06,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:06,789 INFO L87 Difference]: Start difference. First operand 1703 states and 2390 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:09,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:09,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:09,868 INFO L93 Difference]: Finished difference Result 1705 states and 2391 transitions. [2023-11-19 05:08:09,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:09,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-19 05:08:09,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:09,882 INFO L225 Difference]: With dead ends: 1705 [2023-11-19 05:08:09,919 INFO L226 Difference]: Without dead ends: 1702 [2023-11-19 05:08:09,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:09,921 INFO L413 NwaCegarLoop]: 1041 mSDtfsCounter, 1174 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:09,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 1041 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2023-11-19 05:08:09,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2023-11-19 05:08:10,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1702. [2023-11-19 05:08:10,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1004 states have (on average 1.2599601593625498) internal successors, (1265), 1020 states have internal predecessors, (1265), 563 states have call successors, (563), 135 states have call predecessors, (563), 134 states have return successors, (560), 560 states have call predecessors, (560), 560 states have call successors, (560) [2023-11-19 05:08:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2388 transitions. [2023-11-19 05:08:10,055 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2388 transitions. Word has length 15 [2023-11-19 05:08:10,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:10,055 INFO L495 AbstractCegarLoop]: Abstraction has 1702 states and 2388 transitions. [2023-11-19 05:08:10,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:10,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2388 transitions. [2023-11-19 05:08:10,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 05:08:10,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:10,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:10,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:08:10,061 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:10,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:10,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1081066794, now seen corresponding path program 1 times [2023-11-19 05:08:10,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:10,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768676850] [2023-11-19 05:08:10,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:10,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:10,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:10,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:10,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768676850] [2023-11-19 05:08:10,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768676850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:10,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:10,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:08:10,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455791186] [2023-11-19 05:08:10,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:10,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:10,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:10,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:10,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:10,310 INFO L87 Difference]: Start difference. First operand 1702 states and 2388 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:13,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:13,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:13,290 INFO L93 Difference]: Finished difference Result 1704 states and 2389 transitions. [2023-11-19 05:08:13,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:13,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-19 05:08:13,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:13,304 INFO L225 Difference]: With dead ends: 1704 [2023-11-19 05:08:13,304 INFO L226 Difference]: Without dead ends: 1701 [2023-11-19 05:08:13,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:13,307 INFO L413 NwaCegarLoop]: 1039 mSDtfsCounter, 1171 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:13,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 1039 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2023-11-19 05:08:13,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2023-11-19 05:08:13,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1701. [2023-11-19 05:08:13,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1701 states, 1004 states have (on average 1.2589641434262948) internal successors, (1264), 1019 states have internal predecessors, (1264), 562 states have call successors, (562), 135 states have call predecessors, (562), 134 states have return successors, (560), 560 states have call predecessors, (560), 560 states have call successors, (560) [2023-11-19 05:08:13,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2386 transitions. [2023-11-19 05:08:13,488 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2386 transitions. Word has length 16 [2023-11-19 05:08:13,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:13,489 INFO L495 AbstractCegarLoop]: Abstraction has 1701 states and 2386 transitions. [2023-11-19 05:08:13,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:13,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2386 transitions. [2023-11-19 05:08:13,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 05:08:13,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:13,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:13,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:08:13,491 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:13,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:13,492 INFO L85 PathProgramCache]: Analyzing trace with hash 846096948, now seen corresponding path program 1 times [2023-11-19 05:08:13,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:13,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709184250] [2023-11-19 05:08:13,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:13,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:13,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:13,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:13,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709184250] [2023-11-19 05:08:13,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709184250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:13,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:13,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:08:13,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526294376] [2023-11-19 05:08:13,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:13,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:13,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:13,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:13,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:13,747 INFO L87 Difference]: Start difference. First operand 1701 states and 2386 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:16,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:16,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:16,763 INFO L93 Difference]: Finished difference Result 1703 states and 2387 transitions. [2023-11-19 05:08:16,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:16,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-19 05:08:16,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:16,780 INFO L225 Difference]: With dead ends: 1703 [2023-11-19 05:08:16,780 INFO L226 Difference]: Without dead ends: 1695 [2023-11-19 05:08:16,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:16,786 INFO L413 NwaCegarLoop]: 1038 mSDtfsCounter, 1168 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:16,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 1038 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2023-11-19 05:08:16,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2023-11-19 05:08:16,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1695. [2023-11-19 05:08:16,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 999 states have (on average 1.2582582582582582) internal successors, (1257), 1013 states have internal predecessors, (1257), 561 states have call successors, (561), 135 states have call predecessors, (561), 134 states have return successors, (560), 560 states have call predecessors, (560), 560 states have call successors, (560) [2023-11-19 05:08:16,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2378 transitions. [2023-11-19 05:08:16,940 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2378 transitions. Word has length 17 [2023-11-19 05:08:16,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:16,941 INFO L495 AbstractCegarLoop]: Abstraction has 1695 states and 2378 transitions. [2023-11-19 05:08:16,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:16,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2378 transitions. [2023-11-19 05:08:16,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-19 05:08:16,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:16,957 INFO L195 NwaCegarLoop]: trace histogram [12, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:16,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:08:16,957 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:16,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:16,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1612929378, now seen corresponding path program 1 times [2023-11-19 05:08:16,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:16,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246546756] [2023-11-19 05:08:16,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:16,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-19 05:08:17,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:17,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246546756] [2023-11-19 05:08:17,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246546756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:17,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:17,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:17,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727225571] [2023-11-19 05:08:17,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:17,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:17,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:17,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:17,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:17,486 INFO L87 Difference]: Start difference. First operand 1695 states and 2378 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-19 05:08:21,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:23,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:25,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:25,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:25,803 INFO L93 Difference]: Finished difference Result 4117 states and 5761 transitions. [2023-11-19 05:08:25,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:25,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 203 [2023-11-19 05:08:25,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:25,823 INFO L225 Difference]: With dead ends: 4117 [2023-11-19 05:08:25,824 INFO L226 Difference]: Without dead ends: 2423 [2023-11-19 05:08:25,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:25,833 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 1074 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:25,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 2175 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 313 Invalid, 3 Unknown, 0 Unchecked, 8.1s Time] [2023-11-19 05:08:25,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2023-11-19 05:08:26,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 2420. [2023-11-19 05:08:26,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2420 states, 1429 states have (on average 1.2561231630510847) internal successors, (1795), 1446 states have internal predecessors, (1795), 793 states have call successors, (793), 198 states have call predecessors, (793), 197 states have return successors, (792), 792 states have call predecessors, (792), 792 states have call successors, (792) [2023-11-19 05:08:26,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3380 transitions. [2023-11-19 05:08:26,052 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3380 transitions. Word has length 203 [2023-11-19 05:08:26,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:26,053 INFO L495 AbstractCegarLoop]: Abstraction has 2420 states and 3380 transitions. [2023-11-19 05:08:26,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-19 05:08:26,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3380 transitions. [2023-11-19 05:08:26,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-19 05:08:26,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:26,067 INFO L195 NwaCegarLoop]: trace histogram [11, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:26,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:08:26,067 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:26,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:26,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1272014377, now seen corresponding path program 1 times [2023-11-19 05:08:26,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:26,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020115226] [2023-11-19 05:08:26,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:26,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:26,393 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-11-19 05:08:26,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:26,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020115226] [2023-11-19 05:08:26,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020115226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:26,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:26,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:26,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687923982] [2023-11-19 05:08:26,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:26,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:26,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:26,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:26,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:26,397 INFO L87 Difference]: Start difference. First operand 2420 states and 3380 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-19 05:08:30,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:32,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:34,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:34,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:34,294 INFO L93 Difference]: Finished difference Result 5074 states and 7085 transitions. [2023-11-19 05:08:34,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:34,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 177 [2023-11-19 05:08:34,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:34,317 INFO L225 Difference]: With dead ends: 5074 [2023-11-19 05:08:34,317 INFO L226 Difference]: Without dead ends: 2655 [2023-11-19 05:08:34,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:34,330 INFO L413 NwaCegarLoop]: 1096 mSDtfsCounter, 949 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:34,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 2115 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 3 Unknown, 0 Unchecked, 7.7s Time] [2023-11-19 05:08:34,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2023-11-19 05:08:34,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 2652. [2023-11-19 05:08:34,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 1553 states have (on average 1.2569220862846104) internal successors, (1952), 1571 states have internal predecessors, (1952), 875 states have call successors, (875), 224 states have call predecessors, (875), 223 states have return successors, (874), 874 states have call predecessors, (874), 874 states have call successors, (874) [2023-11-19 05:08:34,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3701 transitions. [2023-11-19 05:08:34,645 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3701 transitions. Word has length 177 [2023-11-19 05:08:34,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:34,645 INFO L495 AbstractCegarLoop]: Abstraction has 2652 states and 3701 transitions. [2023-11-19 05:08:34,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-19 05:08:34,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3701 transitions. [2023-11-19 05:08:34,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-19 05:08:34,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:34,660 INFO L195 NwaCegarLoop]: trace histogram [11, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:34,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:08:34,661 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:34,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:34,662 INFO L85 PathProgramCache]: Analyzing trace with hash -681474194, now seen corresponding path program 1 times [2023-11-19 05:08:34,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:34,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598594468] [2023-11-19 05:08:34,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:34,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-19 05:08:35,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:35,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598594468] [2023-11-19 05:08:35,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598594468] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:35,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188061697] [2023-11-19 05:08:35,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:35,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:35,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:35,135 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:35,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c1a24d1-6a11-4801-8bc2-5b7abd9840e0/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:08:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:36,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 3316 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:08:36,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:36,161 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-19 05:08:36,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:36,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188061697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:36,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:08:36,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 05:08:36,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968559338] [2023-11-19 05:08:36,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:36,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:36,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:36,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:36,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:08:36,164 INFO L87 Difference]: Start difference. First operand 2652 states and 3701 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30)