./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_f667e3de-a22b-4310-a07a-a473af2bb44c/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f667e3de-a22b-4310-a07a-a473af2bb44c/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f667e3de-a22b-4310-a07a-a473af2bb44c/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f667e3de-a22b-4310-a07a-a473af2bb44c/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f667e3de-a22b-4310-a07a-a473af2bb44c/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f667e3de-a22b-4310-a07a-a473af2bb44c/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 08b5f37246b5db2704912edf2e599b38e840680a1db95349b6967c3c4646cf90 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 20:29:36,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:29:36,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:29:36,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:29:36,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:29:36,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:29:36,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:29:36,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:29:36,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:29:36,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:29:36,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:29:36,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:29:36,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:29:36,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:29:36,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:29:36,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:29:36,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:29:36,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:29:36,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:29:36,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:29:36,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:29:36,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:29:36,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:29:36,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:29:36,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:29:36,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:29:36,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:29:36,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:29:36,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:29:36,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:29:36,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:29:36,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:29:36,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:29:36,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:29:36,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:29:36,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:29:36,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:29:36,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:29:36,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:29:36,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:29:36,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:29:36,535 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f667e3de-a22b-4310-a07a-a473af2bb44c/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 20:29:36,557 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:29:36,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:29:36,558 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:29:36,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:29:36,559 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:29:36,560 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:29:36,560 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:29:36,560 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:29:36,560 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:29:36,560 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:29:36,561 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:29:36,561 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:29:36,561 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:29:36,561 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:29:36,562 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:29:36,562 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:29:36,562 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:29:36,562 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:29:36,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:29:36,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:29:36,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:29:36,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:29:36,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:29:36,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:29:36,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:29:36,564 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:29:36,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:29:36,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:29:36,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:29:36,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:29:36,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:29:36,566 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:29:36,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:29:36,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:29:36,566 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:29:36,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:29:36,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:29:36,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:29:36,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f667e3de-a22b-4310-a07a-a473af2bb44c/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f667e3de-a22b-4310-a07a-a473af2bb44c/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08b5f37246b5db2704912edf2e599b38e840680a1db95349b6967c3c4646cf90 [2022-11-16 20:29:36,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:29:36,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:29:36,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:29:36,846 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:29:36,847 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:29:36,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f667e3de-a22b-4310-a07a-a473af2bb44c/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i [2022-11-16 20:29:36,929 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f667e3de-a22b-4310-a07a-a473af2bb44c/bin/utaipan-Xvt2sAort0/data/cb3f0f994/90ad0f05cb4d4354b6283a57fa2c15ba/FLAG858f2adc7 [2022-11-16 20:29:37,831 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:29:37,832 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f667e3de-a22b-4310-a07a-a473af2bb44c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i [2022-11-16 20:29:37,882 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f667e3de-a22b-4310-a07a-a473af2bb44c/bin/utaipan-Xvt2sAort0/data/cb3f0f994/90ad0f05cb4d4354b6283a57fa2c15ba/FLAG858f2adc7 [2022-11-16 20:29:38,228 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f667e3de-a22b-4310-a07a-a473af2bb44c/bin/utaipan-Xvt2sAort0/data/cb3f0f994/90ad0f05cb4d4354b6283a57fa2c15ba [2022-11-16 20:29:38,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:29:38,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:29:38,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:29:38,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:29:38,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:29:38,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:29:38" (1/1) ... [2022-11-16 20:29:38,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2308c752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:29:38, skipping insertion in model container [2022-11-16 20:29:38,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:29:38" (1/1) ... [2022-11-16 20:29:38,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:29:38,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:29:41,276 WARN L229 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_f667e3de-a22b-4310-a07a-a473af2bb44c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i[370344,370357] [2022-11-16 20:29:41,501 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-16 20:29:41,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:29:41,547 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:29:42,234 WARN L229 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_f667e3de-a22b-4310-a07a-a473af2bb44c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i[370344,370357] [2022-11-16 20:29:42,252 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-16 20:29:42,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:29:42,421 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:29:42,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:29:42 WrapperNode [2022-11-16 20:29:42,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:29:42,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:29:42,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:29:42,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:29:42,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:29:42" (1/1) ... [2022-11-16 20:29:42,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:29:42" (1/1) ... [2022-11-16 20:29:43,077 INFO L138 Inliner]: procedures = 381, calls = 4812, calls flagged for inlining = 148, calls inlined = 144, statements flattened = 12092 [2022-11-16 20:29:43,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:29:43,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:29:43,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:29:43,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:29:43,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:29:42" (1/1) ... [2022-11-16 20:29:43,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:29:42" (1/1) ... [2022-11-16 20:29:43,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:29:42" (1/1) ... [2022-11-16 20:29:43,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:29:42" (1/1) ... [2022-11-16 20:29:43,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:29:42" (1/1) ... [2022-11-16 20:29:43,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:29:42" (1/1) ... [2022-11-16 20:29:43,563 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:29:42" (1/1) ... [2022-11-16 20:29:43,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:29:42" (1/1) ... [2022-11-16 20:29:43,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:29:43,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:29:43,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:29:43,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:29:43,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:29:42" (1/1) ... [2022-11-16 20:29:43,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:29:43,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f667e3de-a22b-4310-a07a-a473af2bb44c/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:29:43,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f667e3de-a22b-4310-a07a-a473af2bb44c/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:29:43,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f667e3de-a22b-4310-a07a-a473af2bb44c/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:29:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure single_unlink_async [2022-11-16 20:29:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure single_unlink_async [2022-11-16 20:29:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_poll_PSS [2022-11-16 20:29:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_poll_PSS [2022-11-16 20:29:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure end_unlink_async [2022-11-16 20:29:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure end_unlink_async [2022-11-16 20:29:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure dbg_status_buf [2022-11-16 20:29:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure dbg_status_buf [2022-11-16 20:29:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2022-11-16 20:29:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2022-11-16 20:29:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_qh_alloc [2022-11-16 20:29:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_qh_alloc [2022-11-16 20:29:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-16 20:29:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-16 20:29:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-16 20:29:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-16 20:29:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_urb_dequeue [2022-11-16 20:29:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_urb_dequeue [2022-11-16 20:29:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure turn_on_io_watchdog [2022-11-16 20:29:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure turn_on_io_watchdog [2022-11-16 20:29:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_alloc [2022-11-16 20:29:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_alloc [2022-11-16 20:29:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_to_hcd [2022-11-16 20:29:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_to_hcd [2022-11-16 20:29:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-16 20:29:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-16 20:29:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 20:29:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 20:29:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpup [2022-11-16 20:29:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpup [2022-11-16 20:29:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure usb_disabled [2022-11-16 20:29:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_disabled [2022-11-16 20:29:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure qh_destroy [2022-11-16 20:29:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_destroy [2022-11-16 20:29:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure end_free_itds [2022-11-16 20:29:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure end_free_itds [2022-11-16 20:29:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-16 20:29:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-16 20:29:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-16 20:29:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-16 20:29:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_hcd_remove [2022-11-16 20:29:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_hcd_remove [2022-11-16 20:29:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_next_shadow [2022-11-16 20:29:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_next_shadow [2022-11-16 20:29:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_poll_ASS [2022-11-16 20:29:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_poll_ASS [2022-11-16 20:29:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_buffer [2022-11-16 20:29:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_buffer [2022-11-16 20:29:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_run [2022-11-16 20:29:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_run [2022-11-16 20:29:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-16 20:29:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-16 20:29:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 20:29:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 20:29:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure start_unlink_intr [2022-11-16 20:29:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure start_unlink_intr [2022-11-16 20:29:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 20:29:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 20:29:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_hub_status_data [2022-11-16 20:29:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_hub_status_data [2022-11-16 20:29:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_set_command_bit [2022-11-16 20:29:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_set_command_bit [2022-11-16 20:29:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure debug_output [2022-11-16 20:29:43,779 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_output [2022-11-16 20:29:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure usb_maxpacket [2022-11-16 20:29:43,779 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_maxpacket [2022-11-16 20:29:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-16 20:29:43,779 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-16 20:29:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_qtd_init [2022-11-16 20:29:43,779 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_qtd_init [2022-11-16 20:29:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-16 20:29:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-16 20:29:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2022-11-16 20:29:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get [2022-11-16 20:29:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_relinquish_port [2022-11-16 20:29:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_relinquish_port [2022-11-16 20:29:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure hcd_to_fotg210 [2022-11-16 20:29:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure hcd_to_fotg210 [2022-11-16 20:29:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_irq [2022-11-16 20:29:43,781 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_irq [2022-11-16 20:29:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure start_free_itds [2022-11-16 20:29:43,781 INFO L138 BoogieDeclarations]: Found implementation of procedure start_free_itds [2022-11-16 20:29:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-16 20:29:43,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-16 20:29:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_stop [2022-11-16 20:29:43,781 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_stop [2022-11-16 20:29:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 20:29:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-16 20:29:43,782 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-16 20:29:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure bus_to_hcd [2022-11-16 20:29:43,782 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_to_hcd [2022-11-16 20:29:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_clear_command_bit [2022-11-16 20:29:43,782 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_clear_command_bit [2022-11-16 20:29:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure qtd_list_free [2022-11-16 20:29:43,782 INFO L138 BoogieDeclarations]: Found implementation of procedure qtd_list_free [2022-11-16 20:29:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 20:29:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-16 20:29:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_create [2022-11-16 20:29:43,783 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_create [2022-11-16 20:29:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-11-16 20:29:43,783 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-11-16 20:29:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-16 20:29:43,783 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-16 20:29:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure qtd_fill [2022-11-16 20:29:43,784 INFO L138 BoogieDeclarations]: Found implementation of procedure qtd_fill [2022-11-16 20:29:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-16 20:29:43,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-16 20:29:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_readl [2022-11-16 20:29:43,784 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_readl [2022-11-16 20:29:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-16 20:29:43,784 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-16 20:29:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2022-11-16 20:29:43,785 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2022-11-16 20:29:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_clear_tt_buffer [2022-11-16 20:29:43,785 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_clear_tt_buffer [2022-11-16 20:29:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2022-11-16 20:29:43,785 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2022-11-16 20:29:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 20:29:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 20:29:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_writel [2022-11-16 20:29:43,786 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_writel [2022-11-16 20:29:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure dbg_command_buf [2022-11-16 20:29:43,786 INFO L138 BoogieDeclarations]: Found implementation of procedure dbg_command_buf [2022-11-16 20:29:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure start_iaa_cycle [2022-11-16 20:29:43,786 INFO L138 BoogieDeclarations]: Found implementation of procedure start_iaa_cycle [2022-11-16 20:29:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_halt [2022-11-16 20:29:43,786 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_halt [2022-11-16 20:29:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2022-11-16 20:29:43,786 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2022-11-16 20:29:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_hcd_probe [2022-11-16 20:29:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_hcd_probe [2022-11-16 20:29:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_usecs [2022-11-16 20:29:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_usecs [2022-11-16 20:29:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-16 20:29:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-16 20:29:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_endpoint_disable [2022-11-16 20:29:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_endpoint_disable [2022-11-16 20:29:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-11-16 20:29:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-11-16 20:29:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-16 20:29:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-16 20:29:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-16 20:29:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-16 20:29:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-16 20:29:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-16 20:29:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure qh_completions [2022-11-16 20:29:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_completions [2022-11-16 20:29:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_mem_cleanup [2022-11-16 20:29:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_mem_cleanup [2022-11-16 20:29:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_handle_controller_death [2022-11-16 20:29:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_handle_controller_death [2022-11-16 20:29:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-16 20:29:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-16 20:29:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure disable_periodic [2022-11-16 20:29:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_periodic [2022-11-16 20:29:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_hcd [2022-11-16 20:29:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_hcd [2022-11-16 20:29:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure enable_periodic [2022-11-16 20:29:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_periodic [2022-11-16 20:29:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_port_speed [2022-11-16 20:29:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_port_speed [2022-11-16 20:29:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure qh_lines [2022-11-16 20:29:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_lines [2022-11-16 20:29:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-16 20:29:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-16 20:29:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_shutdown [2022-11-16 20:29:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_shutdown [2022-11-16 20:29:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-16 20:29:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-16 20:29:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_handle_intr_unlinks [2022-11-16 20:29:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_handle_intr_unlinks [2022-11-16 20:29:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_enable_event [2022-11-16 20:29:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_enable_event [2022-11-16 20:29:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_qtd_free [2022-11-16 20:29:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_qtd_free [2022-11-16 20:29:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_read_frame_index [2022-11-16 20:29:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_read_frame_index [2022-11-16 20:29:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_unlink_urb_from_ep [2022-11-16 20:29:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_unlink_urb_from_ep [2022-11-16 20:29:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 20:29:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_quiesce [2022-11-16 20:29:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_quiesce [2022-11-16 20:29:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_debug_buffer [2022-11-16 20:29:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_debug_buffer [2022-11-16 20:29:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure qh_schedule [2022-11-16 20:29:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_schedule [2022-11-16 20:29:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_get_frame [2022-11-16 20:29:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_get_frame [2022-11-16 20:29:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure check_intr_schedule [2022-11-16 20:29:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure check_intr_schedule [2022-11-16 20:29:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2022-11-16 20:29:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2022-11-16 20:29:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-16 20:29:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-16 20:29:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_silence_controller [2022-11-16 20:29:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_silence_controller [2022-11-16 20:29:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2022-11-16 20:29:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2022-11-16 20:29:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-16 20:29:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-16 20:29:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_clear_tt_buffer_complete [2022-11-16 20:29:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_clear_tt_buffer_complete [2022-11-16 20:29:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-11-16 20:29:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-11-16 20:29:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-16 20:29:43,796 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-16 20:29:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 20:29:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_endpoint_reset [2022-11-16 20:29:43,796 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_endpoint_reset [2022-11-16 20:29:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_link_urb_to_ep [2022-11-16 20:29:43,796 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_link_urb_to_ep [2022-11-16 20:29:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-16 20:29:43,796 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-16 20:29:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-16 20:29:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-16 20:29:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure iso_sched_free [2022-11-16 20:29:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure iso_sched_free [2022-11-16 20:29:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-16 20:29:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-16 20:29:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 20:29:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_reset [2022-11-16 20:29:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_reset [2022-11-16 20:29:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-16 20:29:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-16 20:29:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-16 20:29:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-16 20:29:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:29:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure usb_calc_bus_time [2022-11-16 20:29:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_calc_bus_time [2022-11-16 20:29:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure hrtimer_cancel [2022-11-16 20:29:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure hrtimer_cancel [2022-11-16 20:29:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure qh_link_async [2022-11-16 20:29:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_link_async [2022-11-16 20:29:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 20:29:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_qtd_alloc [2022-11-16 20:29:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_qtd_alloc [2022-11-16 20:29:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_work [2022-11-16 20:29:43,800 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_work [2022-11-16 20:29:43,800 INFO L130 BoogieDeclarations]: Found specification of procedure qh_urb_transaction [2022-11-16 20:29:43,800 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_urb_transaction [2022-11-16 20:29:43,800 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-16 20:29:43,800 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-16 20:29:43,800 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-16 20:29:43,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-16 20:29:43,800 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_hub_control [2022-11-16 20:29:43,800 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_hub_control [2022-11-16 20:29:43,800 INFO L130 BoogieDeclarations]: Found specification of procedure check_period [2022-11-16 20:29:43,801 INFO L138 BoogieDeclarations]: Found implementation of procedure check_period [2022-11-16 20:29:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2022-11-16 20:29:43,801 INFO L138 BoogieDeclarations]: Found implementation of procedure default_llseek [2022-11-16 20:29:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure __list_splice [2022-11-16 20:29:43,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_splice [2022-11-16 20:29:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-16 20:29:43,801 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-16 20:29:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure shadow_next_periodic [2022-11-16 20:29:43,801 INFO L138 BoogieDeclarations]: Found implementation of procedure shadow_next_periodic [2022-11-16 20:29:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-16 20:29:43,802 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-16 20:29:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpu [2022-11-16 20:29:43,802 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpu [2022-11-16 20:29:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure handshake [2022-11-16 20:29:43,802 INFO L138 BoogieDeclarations]: Found implementation of procedure handshake [2022-11-16 20:29:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure debug_close [2022-11-16 20:29:43,802 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_close [2022-11-16 20:29:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_debug_buffer [2022-11-16 20:29:43,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_debug_buffer [2022-11-16 20:29:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure qh_refresh [2022-11-16 20:29:43,803 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_refresh [2022-11-16 20:29:43,803 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-16 20:29:43,803 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-16 20:29:43,803 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_urb_enqueue [2022-11-16 20:29:43,803 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_urb_enqueue [2022-11-16 20:29:43,803 INFO L130 BoogieDeclarations]: Found specification of procedure start_unlink_async [2022-11-16 20:29:43,803 INFO L138 BoogieDeclarations]: Found implementation of procedure start_unlink_async [2022-11-16 20:29:43,803 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-16 20:29:43,803 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-16 20:29:43,803 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_to_hc32 [2022-11-16 20:29:43,804 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_to_hc32 [2022-11-16 20:29:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-16 20:29:43,804 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-16 20:29:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-16 20:29:43,804 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-16 20:29:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-16 20:29:43,804 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-16 20:29:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-16 20:29:43,804 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-16 20:29:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure qh_append_tds [2022-11-16 20:29:43,805 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_append_tds [2022-11-16 20:29:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 20:29:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure hcd_fotg210_init [2022-11-16 20:29:43,805 INFO L138 BoogieDeclarations]: Found implementation of procedure hcd_fotg210_init [2022-11-16 20:29:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_port_handed_over [2022-11-16 20:29:43,805 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_port_handed_over [2022-11-16 20:29:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_urb_done [2022-11-16 20:29:43,805 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_urb_done [2022-11-16 20:29:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:29:43,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:29:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2022-11-16 20:29:43,806 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2022-11-16 20:29:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-16 20:29:43,806 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-16 20:29:45,402 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:29:45,410 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:29:46,069 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-16 20:29:57,780 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_platform_driver_unregister_16_returnLabel#1: assume { :end_inline_ldv_platform_driver_unregister_16 } true; [2022-11-16 20:29:58,124 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:30:02,603 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:30:02,603 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 20:30:02,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:30:02 BoogieIcfgContainer [2022-11-16 20:30:02,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:30:02,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:30:02,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:30:02,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:30:02,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:29:38" (1/3) ... [2022-11-16 20:30:02,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c7de06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:30:02, skipping insertion in model container [2022-11-16 20:30:02,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:29:42" (2/3) ... [2022-11-16 20:30:02,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c7de06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:30:02, skipping insertion in model container [2022-11-16 20:30:02,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:30:02" (3/3) ... [2022-11-16 20:30:02,623 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i [2022-11-16 20:30:02,644 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:30:02,644 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:30:02,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:30:02,785 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6bc13e68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:30:02,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:30:02,800 INFO L276 IsEmpty]: Start isEmpty. Operand has 2981 states, 1853 states have (on average 1.3405288720992985) internal successors, (2484), 1942 states have internal predecessors, (2484), 983 states have call successors, (983), 144 states have call predecessors, (983), 143 states have return successors, (975), 956 states have call predecessors, (975), 975 states have call successors, (975) [2022-11-16 20:30:02,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-11-16 20:30:02,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:30:02,821 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:30:02,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:30:02,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:30:02,827 INFO L85 PathProgramCache]: Analyzing trace with hash -621672407, now seen corresponding path program 1 times [2022-11-16 20:30:02,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:30:02,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573740172] [2022-11-16 20:30:02,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:30:02,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:30:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:30:04,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-16 20:30:04,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:30:04,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573740172] [2022-11-16 20:30:04,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573740172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:30:04,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:30:04,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:30:04,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865067137] [2022-11-16 20:30:04,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:30:04,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:30:04,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:30:04,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:30:04,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:30:04,532 INFO L87 Difference]: Start difference. First operand has 2981 states, 1853 states have (on average 1.3405288720992985) internal successors, (2484), 1942 states have internal predecessors, (2484), 983 states have call successors, (983), 144 states have call predecessors, (983), 143 states have return successors, (975), 956 states have call predecessors, (975), 975 states have call successors, (975) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-16 20:30:05,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:30:10,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:30:10,657 INFO L93 Difference]: Finished difference Result 8796 states and 13121 transitions. [2022-11-16 20:30:10,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:30:10,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 296 [2022-11-16 20:30:10,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:30:10,738 INFO L225 Difference]: With dead ends: 8796 [2022-11-16 20:30:10,739 INFO L226 Difference]: Without dead ends: 5837 [2022-11-16 20:30:10,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:30:10,771 INFO L413 NwaCegarLoop]: 4980 mSDtfsCounter, 4391 mSDsluCounter, 3948 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4391 SdHoareTripleChecker+Valid, 8928 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-16 20:30:10,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4391 Valid, 8928 Invalid, 788 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-16 20:30:10,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5837 states. [2022-11-16 20:30:11,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5837 to 5822. [2022-11-16 20:30:11,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5822 states, 3633 states have (on average 1.335810624827966) internal successors, (4853), 3788 states have internal predecessors, (4853), 1905 states have call successors, (1905), 284 states have call predecessors, (1905), 283 states have return successors, (1899), 1859 states have call predecessors, (1899), 1899 states have call successors, (1899) [2022-11-16 20:30:11,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5822 states to 5822 states and 8657 transitions. [2022-11-16 20:30:11,355 INFO L78 Accepts]: Start accepts. Automaton has 5822 states and 8657 transitions. Word has length 296 [2022-11-16 20:30:11,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:30:11,360 INFO L495 AbstractCegarLoop]: Abstraction has 5822 states and 8657 transitions. [2022-11-16 20:30:11,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-16 20:30:11,361 INFO L276 IsEmpty]: Start isEmpty. Operand 5822 states and 8657 transitions. [2022-11-16 20:30:11,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-11-16 20:30:11,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:30:11,377 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:30:11,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:30:11,378 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:30:11,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:30:11,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1225165412, now seen corresponding path program 1 times [2022-11-16 20:30:11,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:30:11,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664472146] [2022-11-16 20:30:11,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:30:11,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:30:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:30:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-16 20:30:12,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:30:12,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664472146] [2022-11-16 20:30:12,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664472146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:30:12,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:30:12,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:30:12,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996970276] [2022-11-16 20:30:12,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:30:12,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:30:12,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:30:12,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:30:12,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:30:12,382 INFO L87 Difference]: Start difference. First operand 5822 states and 8657 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-16 20:30:14,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:30:19,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:30:19,626 INFO L93 Difference]: Finished difference Result 17297 states and 25716 transitions. [2022-11-16 20:30:19,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:30:19,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 297 [2022-11-16 20:30:19,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:30:19,725 INFO L225 Difference]: With dead ends: 17297 [2022-11-16 20:30:19,725 INFO L226 Difference]: Without dead ends: 11536 [2022-11-16 20:30:19,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:30:19,767 INFO L413 NwaCegarLoop]: 4974 mSDtfsCounter, 4264 mSDsluCounter, 3999 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4264 SdHoareTripleChecker+Valid, 8973 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-16 20:30:19,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4264 Valid, 8973 Invalid, 792 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 790 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-16 20:30:19,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11536 states. [2022-11-16 20:30:20,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11536 to 11520. [2022-11-16 20:30:20,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11520 states, 7193 states have (on average 1.336299179758098) internal successors, (9612), 7500 states have internal predecessors, (9612), 3761 states have call successors, (3761), 566 states have call predecessors, (3761), 565 states have return successors, (3755), 3673 states have call predecessors, (3755), 3755 states have call successors, (3755) [2022-11-16 20:30:20,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11520 states to 11520 states and 17128 transitions. [2022-11-16 20:30:20,901 INFO L78 Accepts]: Start accepts. Automaton has 11520 states and 17128 transitions. Word has length 297 [2022-11-16 20:30:20,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:30:20,903 INFO L495 AbstractCegarLoop]: Abstraction has 11520 states and 17128 transitions. [2022-11-16 20:30:20,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-16 20:30:20,905 INFO L276 IsEmpty]: Start isEmpty. Operand 11520 states and 17128 transitions. [2022-11-16 20:30:20,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-11-16 20:30:20,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:30:20,913 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:30:20,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:30:20,914 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:30:20,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:30:20,924 INFO L85 PathProgramCache]: Analyzing trace with hash -594156467, now seen corresponding path program 1 times [2022-11-16 20:30:20,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:30:20,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923272744] [2022-11-16 20:30:20,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:30:20,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:30:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:30:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-16 20:30:21,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:30:21,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923272744] [2022-11-16 20:30:21,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923272744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:30:21,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:30:21,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:30:21,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198341966] [2022-11-16 20:30:21,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:30:21,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:30:21,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:30:21,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:30:21,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:30:21,879 INFO L87 Difference]: Start difference. First operand 11520 states and 17128 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-16 20:30:23,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:30:29,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:30:29,411 INFO L93 Difference]: Finished difference Result 34031 states and 50578 transitions. [2022-11-16 20:30:29,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:30:29,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 302 [2022-11-16 20:30:29,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:30:29,600 INFO L225 Difference]: With dead ends: 34031 [2022-11-16 20:30:29,600 INFO L226 Difference]: Without dead ends: 22572 [2022-11-16 20:30:29,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:30:29,684 INFO L413 NwaCegarLoop]: 5265 mSDtfsCounter, 4238 mSDsluCounter, 3998 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4238 SdHoareTripleChecker+Valid, 9263 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-16 20:30:29,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4238 Valid, 9263 Invalid, 841 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 839 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-11-16 20:30:29,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22572 states. [2022-11-16 20:30:31,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22572 to 22558. [2022-11-16 20:30:31,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22558 states, 14094 states have (on average 1.3363842769973038) internal successors, (18835), 14688 states have internal predecessors, (18835), 7345 states have call successors, (7345), 1119 states have call predecessors, (7345), 1118 states have return successors, (7339), 7184 states have call predecessors, (7339), 7339 states have call successors, (7339) [2022-11-16 20:30:31,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22558 states to 22558 states and 33519 transitions. [2022-11-16 20:30:31,279 INFO L78 Accepts]: Start accepts. Automaton has 22558 states and 33519 transitions. Word has length 302 [2022-11-16 20:30:31,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:30:31,280 INFO L495 AbstractCegarLoop]: Abstraction has 22558 states and 33519 transitions. [2022-11-16 20:30:31,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-16 20:30:31,281 INFO L276 IsEmpty]: Start isEmpty. Operand 22558 states and 33519 transitions. [2022-11-16 20:30:31,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-11-16 20:30:31,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:30:31,287 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:30:31,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 20:30:31,287 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:30:31,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:30:31,288 INFO L85 PathProgramCache]: Analyzing trace with hash 380372539, now seen corresponding path program 1 times [2022-11-16 20:30:31,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:30:31,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729752710] [2022-11-16 20:30:31,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:30:31,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:30:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:30:32,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-16 20:30:32,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:30:32,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729752710] [2022-11-16 20:30:32,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729752710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:30:32,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:30:32,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:30:32,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850129422] [2022-11-16 20:30:32,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:30:32,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:30:32,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:30:32,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:30:32,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:30:32,410 INFO L87 Difference]: Start difference. First operand 22558 states and 33519 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 20:30:34,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:30:37,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:30:37,259 INFO L93 Difference]: Finished difference Result 22560 states and 33520 transitions. [2022-11-16 20:30:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:30:37,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 304 [2022-11-16 20:30:37,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:30:37,385 INFO L225 Difference]: With dead ends: 22560 [2022-11-16 20:30:37,386 INFO L226 Difference]: Without dead ends: 22557 [2022-11-16 20:30:37,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:30:37,402 INFO L413 NwaCegarLoop]: 4010 mSDtfsCounter, 4325 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4325 SdHoareTripleChecker+Valid, 4010 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:30:37,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4325 Valid, 4010 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 387 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-11-16 20:30:37,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22557 states. [2022-11-16 20:30:39,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22557 to 22557. [2022-11-16 20:30:39,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22557 states, 14094 states have (on average 1.336313324819072) internal successors, (18834), 14687 states have internal predecessors, (18834), 7344 states have call successors, (7344), 1119 states have call predecessors, (7344), 1118 states have return successors, (7339), 7184 states have call predecessors, (7339), 7339 states have call successors, (7339) [2022-11-16 20:30:39,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22557 states to 22557 states and 33517 transitions. [2022-11-16 20:30:39,250 INFO L78 Accepts]: Start accepts. Automaton has 22557 states and 33517 transitions. Word has length 304 [2022-11-16 20:30:39,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:30:39,251 INFO L495 AbstractCegarLoop]: Abstraction has 22557 states and 33517 transitions. [2022-11-16 20:30:39,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 20:30:39,251 INFO L276 IsEmpty]: Start isEmpty. Operand 22557 states and 33517 transitions. [2022-11-16 20:30:39,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-16 20:30:39,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:30:39,257 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:30:39,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 20:30:39,258 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:30:39,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:30:39,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1095024594, now seen corresponding path program 1 times [2022-11-16 20:30:39,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:30:39,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891098113] [2022-11-16 20:30:39,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:30:39,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:30:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:30:40,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-16 20:30:40,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:30:40,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891098113] [2022-11-16 20:30:40,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891098113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:30:40,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:30:40,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:30:40,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356353679] [2022-11-16 20:30:40,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:30:40,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:30:40,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:30:40,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:30:40,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:30:40,246 INFO L87 Difference]: Start difference. First operand 22557 states and 33517 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 20:30:42,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:30:44,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:30:44,928 INFO L93 Difference]: Finished difference Result 22559 states and 33518 transitions. [2022-11-16 20:30:44,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:30:44,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 305 [2022-11-16 20:30:44,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:30:45,047 INFO L225 Difference]: With dead ends: 22559 [2022-11-16 20:30:45,047 INFO L226 Difference]: Without dead ends: 22556 [2022-11-16 20:30:45,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:30:45,061 INFO L413 NwaCegarLoop]: 4008 mSDtfsCounter, 4322 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4322 SdHoareTripleChecker+Valid, 4008 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-16 20:30:45,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4322 Valid, 4008 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 387 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-11-16 20:30:45,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22556 states. [2022-11-16 20:30:46,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22556 to 22556. [2022-11-16 20:30:46,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22556 states, 14094 states have (on average 1.3362423726408401) internal successors, (18833), 14686 states have internal predecessors, (18833), 7343 states have call successors, (7343), 1119 states have call predecessors, (7343), 1118 states have return successors, (7339), 7184 states have call predecessors, (7339), 7339 states have call successors, (7339) [2022-11-16 20:30:46,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22556 states to 22556 states and 33515 transitions. [2022-11-16 20:30:46,996 INFO L78 Accepts]: Start accepts. Automaton has 22556 states and 33515 transitions. Word has length 305 [2022-11-16 20:30:46,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:30:46,997 INFO L495 AbstractCegarLoop]: Abstraction has 22556 states and 33515 transitions. [2022-11-16 20:30:46,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 20:30:46,998 INFO L276 IsEmpty]: Start isEmpty. Operand 22556 states and 33515 transitions. [2022-11-16 20:30:47,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-11-16 20:30:47,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:30:47,005 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:30:47,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 20:30:47,006 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:30:47,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:30:47,006 INFO L85 PathProgramCache]: Analyzing trace with hash 412309406, now seen corresponding path program 1 times [2022-11-16 20:30:47,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:30:47,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261302788] [2022-11-16 20:30:47,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:30:47,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:30:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:30:47,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-16 20:30:47,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:30:47,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261302788] [2022-11-16 20:30:47,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261302788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:30:47,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:30:47,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:30:47,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483650056] [2022-11-16 20:30:47,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:30:47,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:30:47,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:30:47,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:30:47,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:30:47,862 INFO L87 Difference]: Start difference. First operand 22556 states and 33515 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 20:30:49,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:30:53,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:30:53,608 INFO L93 Difference]: Finished difference Result 31597 states and 46208 transitions. [2022-11-16 20:30:53,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:30:53,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 306 [2022-11-16 20:30:53,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:30:53,772 INFO L225 Difference]: With dead ends: 31597 [2022-11-16 20:30:53,772 INFO L226 Difference]: Without dead ends: 31593 [2022-11-16 20:30:53,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:30:53,788 INFO L413 NwaCegarLoop]: 4392 mSDtfsCounter, 3933 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3933 SdHoareTripleChecker+Valid, 6362 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-16 20:30:53,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3933 Valid, 6362 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 615 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-16 20:30:53,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31593 states. [2022-11-16 20:30:56,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31593 to 31591. [2022-11-16 20:30:56,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31591 states, 19701 states have (on average 1.323283082077052) internal successors, (26070), 20494 states have internal predecessors, (26070), 10064 states have call successors, (10064), 1826 states have call predecessors, (10064), 1825 states have return successors, (10062), 9879 states have call predecessors, (10062), 10062 states have call successors, (10062) [2022-11-16 20:30:56,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31591 states to 31591 states and 46196 transitions. [2022-11-16 20:30:56,312 INFO L78 Accepts]: Start accepts. Automaton has 31591 states and 46196 transitions. Word has length 306 [2022-11-16 20:30:56,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:30:56,313 INFO L495 AbstractCegarLoop]: Abstraction has 31591 states and 46196 transitions. [2022-11-16 20:30:56,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 20:30:56,313 INFO L276 IsEmpty]: Start isEmpty. Operand 31591 states and 46196 transitions. [2022-11-16 20:30:56,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-11-16 20:30:56,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:30:56,319 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:30:56,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 20:30:56,320 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:30:56,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:30:56,320 INFO L85 PathProgramCache]: Analyzing trace with hash -104971983, now seen corresponding path program 1 times [2022-11-16 20:30:56,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:30:56,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681467940] [2022-11-16 20:30:56,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:30:56,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:30:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:30:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-16 20:30:57,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:30:57,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681467940] [2022-11-16 20:30:57,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681467940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:30:57,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:30:57,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:30:57,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687230975] [2022-11-16 20:30:57,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:30:57,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:30:57,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:30:57,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:30:57,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:30:57,283 INFO L87 Difference]: Start difference. First operand 31591 states and 46196 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 20:30:59,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:31:02,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:31:02,466 INFO L93 Difference]: Finished difference Result 31593 states and 46197 transitions. [2022-11-16 20:31:02,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:31:02,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 307 [2022-11-16 20:31:02,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:31:02,598 INFO L225 Difference]: With dead ends: 31593 [2022-11-16 20:31:02,598 INFO L226 Difference]: Without dead ends: 31536 [2022-11-16 20:31:02,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:31:02,611 INFO L413 NwaCegarLoop]: 4003 mSDtfsCounter, 4314 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4314 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-16 20:31:02,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4314 Valid, 4003 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 386 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-16 20:31:02,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31536 states. [2022-11-16 20:31:04,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31536 to 31536. [2022-11-16 20:31:04,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31536 states, 19679 states have (on average 1.32283144468723) internal successors, (26032), 20464 states have internal predecessors, (26032), 10039 states have call successors, (10039), 1818 states have call predecessors, (10039), 1817 states have return successors, (10038), 9862 states have call predecessors, (10038), 10038 states have call successors, (10038) [2022-11-16 20:31:04,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31536 states to 31536 states and 46109 transitions. [2022-11-16 20:31:04,859 INFO L78 Accepts]: Start accepts. Automaton has 31536 states and 46109 transitions. Word has length 307 [2022-11-16 20:31:04,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:31:04,860 INFO L495 AbstractCegarLoop]: Abstraction has 31536 states and 46109 transitions. [2022-11-16 20:31:04,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 20:31:04,861 INFO L276 IsEmpty]: Start isEmpty. Operand 31536 states and 46109 transitions. [2022-11-16 20:31:04,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-11-16 20:31:04,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:31:04,891 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:31:04,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 20:31:04,892 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:31:04,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:31:04,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1900608712, now seen corresponding path program 1 times [2022-11-16 20:31:04,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:31:04,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326231742] [2022-11-16 20:31:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:31:04,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:31:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:31:05,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3174 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3171 trivial. 0 not checked. [2022-11-16 20:31:05,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:31:05,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326231742] [2022-11-16 20:31:05,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326231742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:31:05,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:31:05,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:31:05,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567884947] [2022-11-16 20:31:05,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:31:05,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:31:05,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:31:05,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:31:05,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:31:05,971 INFO L87 Difference]: Start difference. First operand 31536 states and 46109 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-16 20:31:08,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:31:14,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:31:14,844 INFO L93 Difference]: Finished difference Result 63035 states and 92161 transitions. [2022-11-16 20:31:14,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 20:31:14,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 457 [2022-11-16 20:31:14,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:31:15,015 INFO L225 Difference]: With dead ends: 63035 [2022-11-16 20:31:15,015 INFO L226 Difference]: Without dead ends: 31536 [2022-11-16 20:31:15,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:31:15,144 INFO L413 NwaCegarLoop]: 3988 mSDtfsCounter, 3 mSDsluCounter, 7971 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11959 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:31:15,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11959 Invalid, 1164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1162 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-16 20:31:15,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31536 states. [2022-11-16 20:31:17,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31536 to 31536. [2022-11-16 20:31:17,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31536 states, 19679 states have (on average 1.3224249199654454) internal successors, (26024), 20464 states have internal predecessors, (26024), 10039 states have call successors, (10039), 1818 states have call predecessors, (10039), 1817 states have return successors, (10038), 9862 states have call predecessors, (10038), 10038 states have call successors, (10038) [2022-11-16 20:31:17,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31536 states to 31536 states and 46101 transitions. [2022-11-16 20:31:17,428 INFO L78 Accepts]: Start accepts. Automaton has 31536 states and 46101 transitions. Word has length 457 [2022-11-16 20:31:17,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:31:17,429 INFO L495 AbstractCegarLoop]: Abstraction has 31536 states and 46101 transitions. [2022-11-16 20:31:17,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-16 20:31:17,429 INFO L276 IsEmpty]: Start isEmpty. Operand 31536 states and 46101 transitions. [2022-11-16 20:31:17,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2022-11-16 20:31:17,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:31:17,463 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:31:17,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 20:31:17,463 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:31:17,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:31:17,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1396219680, now seen corresponding path program 1 times [2022-11-16 20:31:17,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:31:17,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466800861] [2022-11-16 20:31:17,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:31:17,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:31:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:31:18,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3174 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3171 trivial. 0 not checked. [2022-11-16 20:31:18,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:31:18,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466800861] [2022-11-16 20:31:18,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466800861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:31:18,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:31:18,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:31:18,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164548949] [2022-11-16 20:31:18,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:31:18,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:31:18,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:31:18,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:31:18,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:31:18,534 INFO L87 Difference]: Start difference. First operand 31536 states and 46101 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-16 20:31:20,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:31:27,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:31:27,587 INFO L93 Difference]: Finished difference Result 77969 states and 114016 transitions. [2022-11-16 20:31:27,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:31:27,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 485 [2022-11-16 20:31:27,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:31:27,766 INFO L225 Difference]: With dead ends: 77969 [2022-11-16 20:31:27,766 INFO L226 Difference]: Without dead ends: 46494 [2022-11-16 20:31:27,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:31:27,898 INFO L413 NwaCegarLoop]: 7520 mSDtfsCounter, 4254 mSDsluCounter, 3963 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4254 SdHoareTripleChecker+Valid, 11483 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-16 20:31:27,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4254 Valid, 11483 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1112 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-11-16 20:31:27,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46494 states. [2022-11-16 20:31:30,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46494 to 46489. [2022-11-16 20:31:30,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46489 states, 29027 states have (on average 1.3228029076377166) internal successors, (38397), 30184 states have internal predecessors, (38397), 14792 states have call successors, (14792), 2670 states have call predecessors, (14792), 2669 states have return successors, (14791), 14532 states have call predecessors, (14791), 14791 states have call successors, (14791) [2022-11-16 20:31:30,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46489 states to 46489 states and 67980 transitions. [2022-11-16 20:31:30,739 INFO L78 Accepts]: Start accepts. Automaton has 46489 states and 67980 transitions. Word has length 485 [2022-11-16 20:31:30,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:31:30,740 INFO L495 AbstractCegarLoop]: Abstraction has 46489 states and 67980 transitions. [2022-11-16 20:31:30,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-16 20:31:30,740 INFO L276 IsEmpty]: Start isEmpty. Operand 46489 states and 67980 transitions. [2022-11-16 20:31:30,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-11-16 20:31:30,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:31:30,762 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:31:30,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 20:31:30,763 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:31:30,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:31:30,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1219265199, now seen corresponding path program 1 times [2022-11-16 20:31:30,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:31:30,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451429166] [2022-11-16 20:31:30,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:31:30,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:31:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:31:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3173 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3171 trivial. 0 not checked. [2022-11-16 20:31:31,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:31:31,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451429166] [2022-11-16 20:31:31,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451429166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:31:31,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:31:31,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:31:31,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910146003] [2022-11-16 20:31:31,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:31:31,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:31:31,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:31:31,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:31:31,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:31:31,943 INFO L87 Difference]: Start difference. First operand 46489 states and 67980 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-16 20:31:32,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:31:35,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:31:43,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:31:43,331 INFO L93 Difference]: Finished difference Result 114576 states and 167615 transitions. [2022-11-16 20:31:43,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:31:43,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 484 [2022-11-16 20:31:43,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:31:43,647 INFO L225 Difference]: With dead ends: 114576 [2022-11-16 20:31:43,647 INFO L226 Difference]: Without dead ends: 68148 [2022-11-16 20:31:43,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:31:43,979 INFO L413 NwaCegarLoop]: 7525 mSDtfsCounter, 4259 mSDsluCounter, 3968 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4259 SdHoareTripleChecker+Valid, 11493 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:31:43,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4259 Valid, 11493 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1115 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-11-16 20:31:44,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68148 states. [2022-11-16 20:31:47,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68148 to 68144. [2022-11-16 20:31:47,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68144 states, 42573 states have (on average 1.3232330350221972) internal successors, (56334), 44267 states have internal predecessors, (56334), 21679 states have call successors, (21679), 3892 states have call predecessors, (21679), 3891 states have return successors, (21678), 21300 states have call predecessors, (21678), 21678 states have call successors, (21678) [2022-11-16 20:31:47,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68144 states to 68144 states and 99691 transitions. [2022-11-16 20:31:47,837 INFO L78 Accepts]: Start accepts. Automaton has 68144 states and 99691 transitions. Word has length 484 [2022-11-16 20:31:47,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:31:47,837 INFO L495 AbstractCegarLoop]: Abstraction has 68144 states and 99691 transitions. [2022-11-16 20:31:47,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-16 20:31:47,838 INFO L276 IsEmpty]: Start isEmpty. Operand 68144 states and 99691 transitions. [2022-11-16 20:31:47,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2022-11-16 20:31:47,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:31:47,860 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:31:47,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 20:31:47,860 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:31:47,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:31:47,861 INFO L85 PathProgramCache]: Analyzing trace with hash 530094475, now seen corresponding path program 1 times [2022-11-16 20:31:47,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:31:47,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014032590] [2022-11-16 20:31:47,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:31:47,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:31:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:31:49,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3176 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3171 trivial. 0 not checked. [2022-11-16 20:31:49,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:31:49,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014032590] [2022-11-16 20:31:49,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014032590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:31:49,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:31:49,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:31:49,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930280292] [2022-11-16 20:31:49,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:31:49,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:31:49,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:31:49,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:31:49,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:31:49,275 INFO L87 Difference]: Start difference. First operand 68144 states and 99691 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-16 20:31:51,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []