./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI --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 83231938a54e9ae94bbb1bd48018cfe01091365ca5db88cfd1292dc620f78e56 --- 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-5e519f3 [2022-11-03 02:48:58,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:48:58,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:48:58,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:48:58,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:48:58,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:48:58,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:48:58,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:48:58,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:48:58,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:48:58,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:48:58,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:48:58,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:48:58,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:48:58,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:48:58,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:48:58,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:48:58,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:48:58,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:48:58,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:48:58,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:48:58,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:48:58,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:48:58,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:48:58,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:48:58,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:48:58,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:48:58,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:48:58,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:48:58,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:48:58,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:48:58,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:48:58,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:48:58,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:48:58,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:48:58,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:48:58,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:48:58,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:48:58,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:48:58,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:48:58,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:48:58,613 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:48:58,637 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:48:58,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:48:58,637 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:48:58,637 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:48:58,638 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:48:58,638 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:48:58,638 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:48:58,638 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:48:58,638 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:48:58,639 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:48:58,639 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:48:58,639 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:48:58,639 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:48:58,639 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:48:58,639 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:48:58,640 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:48:58,640 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:48:58,640 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:48:58,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:48:58,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:48:58,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:48:58,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:48:58,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:48:58,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:48:58,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:48:58,642 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:48:58,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:48:58,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:48:58,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:48:58,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:48:58,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:48:58,643 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:48:58,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:48:58,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:48:58,643 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:48:58,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:48:58,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:48:58,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:48:58,644 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_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83231938a54e9ae94bbb1bd48018cfe01091365ca5db88cfd1292dc620f78e56 [2022-11-03 02:48:58,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:48:58,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:48:58,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:48:59,000 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:48:59,001 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:48:59,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-03 02:48:59,086 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI/data/edaa3845b/9baad1bdb2c1448f812ff878939e1d6c/FLAG0a3d638eb [2022-11-03 02:49:00,176 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:49:00,177 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-03 02:49:00,246 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI/data/edaa3845b/9baad1bdb2c1448f812ff878939e1d6c/FLAG0a3d638eb [2022-11-03 02:49:00,504 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI/data/edaa3845b/9baad1bdb2c1448f812ff878939e1d6c [2022-11-03 02:49:00,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:49:00,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:49:00,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:49:00,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:49:00,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:49:00,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:49:00" (1/1) ... [2022-11-03 02:49:00,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad37c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:00, skipping insertion in model container [2022-11-03 02:49:00,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:49:00" (1/1) ... [2022-11-03 02:49:00,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:49:00,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:49:02,941 WARN L230 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_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[419026,419039] [2022-11-03 02:49:03,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:49:03,137 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:49:03,771 WARN L230 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_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[419026,419039] [2022-11-03 02:49:03,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:49:03,902 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:49:03,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:03 WrapperNode [2022-11-03 02:49:03,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:49:03,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:49:03,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:49:03,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:49:03,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:03" (1/1) ... [2022-11-03 02:49:04,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:03" (1/1) ... [2022-11-03 02:49:04,637 INFO L138 Inliner]: procedures = 170, calls = 6771, calls flagged for inlining = 68, calls inlined = 55, statements flattened = 16522 [2022-11-03 02:49:04,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:49:04,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:49:04,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:49:04,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:49:04,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:03" (1/1) ... [2022-11-03 02:49:04,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:03" (1/1) ... [2022-11-03 02:49:04,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:03" (1/1) ... [2022-11-03 02:49:04,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:03" (1/1) ... [2022-11-03 02:49:05,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:03" (1/1) ... [2022-11-03 02:49:05,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:03" (1/1) ... [2022-11-03 02:49:05,269 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:03" (1/1) ... [2022-11-03 02:49:05,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:03" (1/1) ... [2022-11-03 02:49:05,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:49:05,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:49:05,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:49:05,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:49:05,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:03" (1/1) ... [2022-11-03 02:49:05,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:49:05,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:49:05,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:49:05,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:49:05,476 INFO L130 BoogieDeclarations]: Found specification of procedure find_dev [2022-11-03 02:49:05,477 INFO L138 BoogieDeclarations]: Found implementation of procedure find_dev [2022-11-03 02:49:05,477 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_vitclk_ctl [2022-11-03 02:49:05,477 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_vitclk_ctl [2022-11-03 02:49:05,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:49:05,477 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 02:49:05,477 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 02:49:05,478 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_burst [2022-11-03 02:49:05,478 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_burst [2022-11-03 02:49:05,478 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_i2c_gate_ctrl [2022-11-03 02:49:05,478 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_i2c_gate_ctrl [2022-11-03 02:49:05,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:49:05,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:49:05,479 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_srate [2022-11-03 02:49:05,479 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_srate [2022-11-03 02:49:05,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:49:05,479 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_per [2022-11-03 02:49:05,479 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_per [2022-11-03 02:49:05,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_demod_lock_of_stv090x_internal [2022-11-03 02:49:05,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_demod_lock_of_stv090x_internal [2022-11-03 02:49:05,480 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod [2022-11-03 02:49:05,480 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod [2022-11-03 02:49:05,480 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_dvbs_track_crl [2022-11-03 02:49:05,480 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_dvbs_track_crl [2022-11-03 02:49:05,480 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:49:05,481 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:49:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_viterbi [2022-11-03 02:49:05,481 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_viterbi [2022-11-03 02:49:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_signal_strength [2022-11-03 02:49:05,481 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_signal_strength [2022-11-03 02:49:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:49:05,482 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:49:05,482 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:49:05,482 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_msg [2022-11-03 02:49:05,482 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_msg [2022-11-03 02:49:05,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:49:05,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:49:05,483 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thacq [2022-11-03 02:49:05,483 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thacq [2022-11-03 02:49:05,483 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_car_width [2022-11-03 02:49:05,483 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_car_width [2022-11-03 02:49:05,484 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_recv_slave_reply [2022-11-03 02:49:05,484 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_recv_slave_reply [2022-11-03 02:49:05,484 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2022-11-03 02:49:05,484 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2022-11-03 02:49:05,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:49:05,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:49:05,485 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2022-11-03 02:49:05,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2022-11-03 02:49:05,486 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_init [2022-11-03 02:49:05,487 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_init [2022-11-03 02:49:05,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demod_lock_of_stv090x_internal [2022-11-03 02:49:05,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demod_lock_of_stv090x_internal [2022-11-03 02:49:05,488 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 02:49:05,488 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 02:49:05,488 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 02:49:05,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 02:49:05,489 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_dmdlock [2022-11-03 02:49:05,489 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_dmdlock [2022-11-03 02:49:05,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:49:05,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:49:05,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:49:05,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tuner_lock_of_stv090x_internal [2022-11-03 02:49:05,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tuner_lock_of_stv090x_internal [2022-11-03 02:49:05,491 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_sleep [2022-11-03 02:49:05,491 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_sleep [2022-11-03 02:49:05,491 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_reg [2022-11-03 02:49:05,491 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_reg [2022-11-03 02:49:05,491 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_signal [2022-11-03 02:49:05,492 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_signal [2022-11-03 02:49:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:49:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:49:05,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:49:05,493 INFO L130 BoogieDeclarations]: Found specification of procedure comp2 [2022-11-03 02:49:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure comp2 [2022-11-03 02:49:05,493 INFO L130 BoogieDeclarations]: Found specification of procedure remove_dev [2022-11-03 02:49:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_dev [2022-11-03 02:49:05,494 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_search [2022-11-03 02:49:05,494 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_search [2022-11-03 02:49:05,494 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_write_reg [2022-11-03 02:49:05,494 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_write_reg [2022-11-03 02:49:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_frontend_algo [2022-11-03 02:49:05,495 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_frontend_algo [2022-11-03 02:49:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:49:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:49:05,496 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_status [2022-11-03 02:49:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_status [2022-11-03 02:49:05,496 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thtracq [2022-11-03 02:49:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thtracq [2022-11-03 02:49:05,497 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_tmg [2022-11-03 02:49:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_tmg [2022-11-03 02:49:05,498 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_cnr [2022-11-03 02:49:05,498 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_cnr [2022-11-03 02:49:05,499 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:49:05,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:49:05,499 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_srate [2022-11-03 02:49:05,499 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_srate [2022-11-03 02:49:05,499 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod_single [2022-11-03 02:49:05,499 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod_single [2022-11-03 02:49:05,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:49:05,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-03 02:49:05,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-03 02:49:05,500 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_viterbi [2022-11-03 02:49:05,500 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_viterbi [2022-11-03 02:49:05,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:49:05,501 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_mclk [2022-11-03 02:49:05,501 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_mclk [2022-11-03 02:49:05,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:49:05,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:49:05,502 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_lock_tmg [2022-11-03 02:49:05,503 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_lock_tmg [2022-11-03 02:49:06,898 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:49:06,901 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:49:23,900 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:49:34,816 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:49:34,817 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:49:34,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:49:34 BoogieIcfgContainer [2022-11-03 02:49:34,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:49:34,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:49:34,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:49:34,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:49:34,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:49:00" (1/3) ... [2022-11-03 02:49:34,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef559b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:49:34, skipping insertion in model container [2022-11-03 02:49:34,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:03" (2/3) ... [2022-11-03 02:49:34,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef559b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:49:34, skipping insertion in model container [2022-11-03 02:49:34,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:49:34" (3/3) ... [2022-11-03 02:49:34,847 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-03 02:49:34,869 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:49:34,869 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:49:35,007 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:49:35,015 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;@7a96fbb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:49:35,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:49:35,033 INFO L276 IsEmpty]: Start isEmpty. Operand has 4209 states, 2866 states have (on average 1.4410327983251918) internal successors, (4130), 2878 states have internal predecessors, (4130), 1293 states have call successors, (1293), 48 states have call predecessors, (1293), 48 states have return successors, (1293), 1292 states have call predecessors, (1293), 1293 states have call successors, (1293) [2022-11-03 02:49:35,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 02:49:35,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:35,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 02:49:35,047 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:49:35,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:35,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1078225845, now seen corresponding path program 1 times [2022-11-03 02:49:35,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:49:35,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861078439] [2022-11-03 02:49:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:35,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:49:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:36,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:49:36,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:49:36,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861078439] [2022-11-03 02:49:36,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861078439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:36,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:49:36,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:49:36,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110203615] [2022-11-03 02:49:36,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:36,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:49:36,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:49:36,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:49:36,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:49:36,404 INFO L87 Difference]: Start difference. First operand has 4209 states, 2866 states have (on average 1.4410327983251918) internal successors, (4130), 2878 states have internal predecessors, (4130), 1293 states have call successors, (1293), 48 states have call predecessors, (1293), 48 states have return successors, (1293), 1292 states have call predecessors, (1293), 1293 states have call successors, (1293) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:49:40,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:49:42,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:49:45,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:49:47,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:49:48,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:48,542 INFO L93 Difference]: Finished difference Result 12134 states and 19476 transitions. [2022-11-03 02:49:48,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:49:48,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-03 02:49:48,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:48,653 INFO L225 Difference]: With dead ends: 12134 [2022-11-03 02:49:48,654 INFO L226 Difference]: Without dead ends: 7924 [2022-11-03 02:49:48,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:49:48,735 INFO L413 NwaCegarLoop]: 7594 mSDtfsCounter, 6429 mSDsluCounter, 6201 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6429 SdHoareTripleChecker+Valid, 13565 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:48,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6429 Valid, 13565 Invalid, 486 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 480 Invalid, 2 Unknown, 0 Unchecked, 11.6s Time] [2022-11-03 02:49:48,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7924 states. [2022-11-03 02:49:50,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7924 to 7920. [2022-11-03 02:49:50,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7920 states, 5412 states have (on average 1.4406873614190687) internal successors, (7797), 5427 states have internal predecessors, (7797), 2415 states have call successors, (2415), 94 states have call predecessors, (2415), 92 states have return successors, (2427), 2402 states have call predecessors, (2427), 2407 states have call successors, (2427) [2022-11-03 02:49:50,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7920 states to 7920 states and 12639 transitions. [2022-11-03 02:49:50,901 INFO L78 Accepts]: Start accepts. Automaton has 7920 states and 12639 transitions. Word has length 6 [2022-11-03 02:49:50,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:49:50,902 INFO L495 AbstractCegarLoop]: Abstraction has 7920 states and 12639 transitions. [2022-11-03 02:49:50,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:49:50,903 INFO L276 IsEmpty]: Start isEmpty. Operand 7920 states and 12639 transitions. [2022-11-03 02:49:50,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:49:50,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:50,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:49:50,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:49:50,907 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:49:50,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:50,908 INFO L85 PathProgramCache]: Analyzing trace with hash -937236781, now seen corresponding path program 1 times [2022-11-03 02:49:50,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:49:50,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757709194] [2022-11-03 02:49:50,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:50,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:49:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:49:51,614 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:49:51,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757709194] [2022-11-03 02:49:51,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757709194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:51,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:49:51,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:49:51,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17141161] [2022-11-03 02:49:51,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:51,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:49:51,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:49:51,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:49:51,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:49:51,620 INFO L87 Difference]: Start difference. First operand 7920 states and 12639 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:49:54,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:49:56,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:49:58,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:50:02,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:50:04,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:05,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:05,336 INFO L93 Difference]: Finished difference Result 13997 states and 22314 transitions. [2022-11-03 02:50:05,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:50:05,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 02:50:05,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:05,444 INFO L225 Difference]: With dead ends: 13997 [2022-11-03 02:50:05,444 INFO L226 Difference]: Without dead ends: 13994 [2022-11-03 02:50:05,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:05,458 INFO L413 NwaCegarLoop]: 7398 mSDtfsCounter, 6622 mSDsluCounter, 5037 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6627 SdHoareTripleChecker+Valid, 12270 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:05,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6627 Valid, 12270 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 404 Invalid, 5 Unknown, 0 Unchecked, 13.3s Time] [2022-11-03 02:50:05,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13994 states. [2022-11-03 02:50:07,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13994 to 13977. [2022-11-03 02:50:07,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13977 states, 9579 states have (on average 1.4407558200229669) internal successors, (13801), 9599 states have internal predecessors, (13801), 4236 states have call successors, (4236), 161 states have call predecessors, (4236), 161 states have return successors, (4254), 4222 states have call predecessors, (4254), 4229 states have call successors, (4254) [2022-11-03 02:50:08,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13977 states to 13977 states and 22291 transitions. [2022-11-03 02:50:08,085 INFO L78 Accepts]: Start accepts. Automaton has 13977 states and 22291 transitions. Word has length 7 [2022-11-03 02:50:08,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:08,086 INFO L495 AbstractCegarLoop]: Abstraction has 13977 states and 22291 transitions. [2022-11-03 02:50:08,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:50:08,087 INFO L276 IsEmpty]: Start isEmpty. Operand 13977 states and 22291 transitions. [2022-11-03 02:50:08,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 02:50:08,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:08,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:50:08,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:50:08,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:08,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:08,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1007936120, now seen corresponding path program 1 times [2022-11-03 02:50:08,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:08,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018897372] [2022-11-03 02:50:08,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:08,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:08,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:50:08,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:08,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018897372] [2022-11-03 02:50:08,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018897372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:08,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:08,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:50:08,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008887192] [2022-11-03 02:50:08,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:08,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:50:08,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:08,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:50:08,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:08,666 INFO L87 Difference]: Start difference. First operand 13977 states and 22291 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:50:12,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:50:16,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:18,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:19,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:19,190 INFO L93 Difference]: Finished difference Result 18157 states and 28863 transitions. [2022-11-03 02:50:19,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:50:19,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 02:50:19,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:19,301 INFO L225 Difference]: With dead ends: 18157 [2022-11-03 02:50:19,301 INFO L226 Difference]: Without dead ends: 18154 [2022-11-03 02:50:19,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:19,315 INFO L413 NwaCegarLoop]: 7396 mSDtfsCounter, 6671 mSDsluCounter, 4992 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6673 SdHoareTripleChecker+Valid, 12223 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:19,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6673 Valid, 12223 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 406 Invalid, 3 Unknown, 0 Unchecked, 10.0s Time] [2022-11-03 02:50:19,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18154 states. [2022-11-03 02:50:22,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18154 to 18130. [2022-11-03 02:50:22,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18130 states, 12435 states have (on average 1.4362685967028548) internal successors, (17860), 12464 states have internal predecessors, (17860), 5475 states have call successors, (5475), 219 states have call predecessors, (5475), 219 states have return successors, (5494), 5454 states have call predecessors, (5494), 5469 states have call successors, (5494) [2022-11-03 02:50:22,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18130 states to 18130 states and 28829 transitions. [2022-11-03 02:50:22,476 INFO L78 Accepts]: Start accepts. Automaton has 18130 states and 28829 transitions. Word has length 8 [2022-11-03 02:50:22,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:22,477 INFO L495 AbstractCegarLoop]: Abstraction has 18130 states and 28829 transitions. [2022-11-03 02:50:22,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:50:22,477 INFO L276 IsEmpty]: Start isEmpty. Operand 18130 states and 28829 transitions. [2022-11-03 02:50:22,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 02:50:22,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:22,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:50:22,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:50:22,479 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:22,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:22,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1178758774, now seen corresponding path program 1 times [2022-11-03 02:50:22,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:22,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517065846] [2022-11-03 02:50:22,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:22,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:23,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:50:23,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:23,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517065846] [2022-11-03 02:50:23,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517065846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:23,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:23,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:50:23,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090660667] [2022-11-03 02:50:23,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:23,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:50:23,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:23,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:50:23,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:23,011 INFO L87 Difference]: Start difference. First operand 18130 states and 28829 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:50:25,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:28,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:50:30,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:50:33,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:50:35,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:50:37,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:37,188 INFO L93 Difference]: Finished difference Result 53302 states and 85305 transitions. [2022-11-03 02:50:37,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:50:37,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 02:50:37,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:37,727 INFO L225 Difference]: With dead ends: 53302 [2022-11-03 02:50:37,728 INFO L226 Difference]: Without dead ends: 35169 [2022-11-03 02:50:37,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:37,999 INFO L413 NwaCegarLoop]: 7934 mSDtfsCounter, 6452 mSDsluCounter, 6724 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6452 SdHoareTripleChecker+Valid, 14419 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:38,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6452 Valid, 14419 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 490 Invalid, 4 Unknown, 0 Unchecked, 13.0s Time] [2022-11-03 02:50:38,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35169 states. [2022-11-03 02:50:44,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35169 to 35143. [2022-11-03 02:50:44,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35143 states, 24096 states have (on average 1.4362549800796813) internal successors, (34608), 24150 states have internal predecessors, (34608), 10622 states have call successors, (10622), 424 states have call predecessors, (10622), 424 states have return successors, (10992), 10584 states have call predecessors, (10992), 10614 states have call successors, (10992) [2022-11-03 02:50:44,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35143 states to 35143 states and 56222 transitions. [2022-11-03 02:50:44,467 INFO L78 Accepts]: Start accepts. Automaton has 35143 states and 56222 transitions. Word has length 9 [2022-11-03 02:50:44,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:44,468 INFO L495 AbstractCegarLoop]: Abstraction has 35143 states and 56222 transitions. [2022-11-03 02:50:44,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:50:44,468 INFO L276 IsEmpty]: Start isEmpty. Operand 35143 states and 56222 transitions. [2022-11-03 02:50:44,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 02:50:44,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:44,477 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:50:44,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:50:44,478 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:44,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:44,478 INFO L85 PathProgramCache]: Analyzing trace with hash 349378623, now seen corresponding path program 1 times [2022-11-03 02:50:44,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:44,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302727637] [2022-11-03 02:50:44,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:44,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:46,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:50:46,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:46,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302727637] [2022-11-03 02:50:46,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302727637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:46,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:46,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:50:46,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126020166] [2022-11-03 02:50:46,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:46,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:50:46,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:46,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:50:46,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:50:46,837 INFO L87 Difference]: Start difference. First operand 35143 states and 56222 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:50:51,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:54,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:56,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:50:58,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:51:03,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:03,701 INFO L93 Difference]: Finished difference Result 70896 states and 114211 transitions. [2022-11-03 02:51:03,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:51:03,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 53 [2022-11-03 02:51:03,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:03,911 INFO L225 Difference]: With dead ends: 70896 [2022-11-03 02:51:03,911 INFO L226 Difference]: Without dead ends: 35754 [2022-11-03 02:51:04,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:04,425 INFO L413 NwaCegarLoop]: 6435 mSDtfsCounter, 160 mSDsluCounter, 19861 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 49 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 25583 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:04,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 25583 Invalid, 1165 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1114 Invalid, 2 Unknown, 0 Unchecked, 15.0s Time] [2022-11-03 02:51:04,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35754 states. [2022-11-03 02:51:09,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35754 to 35683. [2022-11-03 02:51:09,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35683 states, 24498 states have (on average 1.43252510409013) internal successors, (35094), 24558 states have internal predecessors, (35094), 10742 states have call successors, (10742), 436 states have call predecessors, (10742), 442 states have return successors, (11191), 10704 states have call predecessors, (11191), 10734 states have call successors, (11191) [2022-11-03 02:51:09,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35683 states to 35683 states and 57027 transitions. [2022-11-03 02:51:09,564 INFO L78 Accepts]: Start accepts. Automaton has 35683 states and 57027 transitions. Word has length 53 [2022-11-03 02:51:09,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:09,565 INFO L495 AbstractCegarLoop]: Abstraction has 35683 states and 57027 transitions. [2022-11-03 02:51:09,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:51:09,565 INFO L276 IsEmpty]: Start isEmpty. Operand 35683 states and 57027 transitions. [2022-11-03 02:51:09,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 02:51:09,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:09,571 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:51:09,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:51:09,571 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:09,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:09,572 INFO L85 PathProgramCache]: Analyzing trace with hash 544504532, now seen corresponding path program 1 times [2022-11-03 02:51:09,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:09,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277929102] [2022-11-03 02:51:09,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:09,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:11,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:51:11,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:11,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277929102] [2022-11-03 02:51:11,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277929102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:11,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:11,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:51:11,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306747523] [2022-11-03 02:51:11,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:11,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:51:11,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:11,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:51:11,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:51:11,268 INFO L87 Difference]: Start difference. First operand 35683 states and 57027 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:51:13,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:17,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:17,644 INFO L93 Difference]: Finished difference Result 35781 states and 57142 transitions. [2022-11-03 02:51:17,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:51:17,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2022-11-03 02:51:17,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:17,801 INFO L225 Difference]: With dead ends: 35781 [2022-11-03 02:51:17,802 INFO L226 Difference]: Without dead ends: 35778 [2022-11-03 02:51:17,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:51:17,821 INFO L413 NwaCegarLoop]: 6459 mSDtfsCounter, 224 mSDsluCounter, 6486 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 12713 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:17,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 12713 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-03 02:51:17,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35778 states. [2022-11-03 02:51:22,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35778 to 35778. [2022-11-03 02:51:22,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35778 states, 24560 states have (on average 1.4320846905537459) internal successors, (35172), 24619 states have internal predecessors, (35172), 10757 states have call successors, (10757), 454 states have call predecessors, (10757), 460 states have return successors, (11207), 10720 states have call predecessors, (11207), 10750 states have call successors, (11207) [2022-11-03 02:51:22,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35778 states to 35778 states and 57136 transitions. [2022-11-03 02:51:22,617 INFO L78 Accepts]: Start accepts. Automaton has 35778 states and 57136 transitions. Word has length 54 [2022-11-03 02:51:22,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:22,618 INFO L495 AbstractCegarLoop]: Abstraction has 35778 states and 57136 transitions. [2022-11-03 02:51:22,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:51:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 35778 states and 57136 transitions. [2022-11-03 02:51:22,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-03 02:51:22,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:22,623 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:51:22,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:51:22,623 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:22,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:22,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1689897456, now seen corresponding path program 1 times [2022-11-03 02:51:22,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:22,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632930988] [2022-11-03 02:51:22,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:22,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:51:29,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:29,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632930988] [2022-11-03 02:51:29,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632930988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:29,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:29,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:51:29,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21242378] [2022-11-03 02:51:29,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:29,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:51:29,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:29,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:51:29,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:51:29,052 INFO L87 Difference]: Start difference. First operand 35778 states and 57136 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:51:34,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:51:38,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:39,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:39,832 INFO L93 Difference]: Finished difference Result 71571 states and 121822 transitions. [2022-11-03 02:51:39,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:51:39,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2022-11-03 02:51:39,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:40,035 INFO L225 Difference]: With dead ends: 71571 [2022-11-03 02:51:40,036 INFO L226 Difference]: Without dead ends: 35794 [2022-11-03 02:51:40,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:51:40,706 INFO L413 NwaCegarLoop]: 6455 mSDtfsCounter, 0 mSDsluCounter, 6692 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12907 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:40,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12907 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 486 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2022-11-03 02:51:40,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35794 states. [2022-11-03 02:51:45,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35794 to 35794. [2022-11-03 02:51:45,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35794 states, 24576 states have (on average 1.4318033854166667) internal successors, (35188), 24635 states have internal predecessors, (35188), 10757 states have call successors, (10757), 454 states have call predecessors, (10757), 460 states have return successors, (11207), 10720 states have call predecessors, (11207), 10750 states have call successors, (11207) [2022-11-03 02:51:45,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35794 states to 35794 states and 57152 transitions. [2022-11-03 02:51:45,336 INFO L78 Accepts]: Start accepts. Automaton has 35794 states and 57152 transitions. Word has length 58 [2022-11-03 02:51:45,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:45,337 INFO L495 AbstractCegarLoop]: Abstraction has 35794 states and 57152 transitions. [2022-11-03 02:51:45,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:51:45,337 INFO L276 IsEmpty]: Start isEmpty. Operand 35794 states and 57152 transitions. [2022-11-03 02:51:45,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-03 02:51:45,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:45,342 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:51:45,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:51:45,342 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:45,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:45,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1933143808, now seen corresponding path program 1 times [2022-11-03 02:51:45,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:45,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348140779] [2022-11-03 02:51:45,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:45,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:49,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:51:49,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:49,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348140779] [2022-11-03 02:51:49,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348140779] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:51:49,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240778721] [2022-11-03 02:51:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:49,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:51:49,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:51:49,057 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:51:49,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:51:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:51,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 7682 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:51:51,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:52,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:52,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:51:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:51:52,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240778721] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:51:52,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:51:52,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2022-11-03 02:51:52,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502185463] [2022-11-03 02:51:52,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:52,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:51:52,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:52,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:51:52,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:52,170 INFO L87 Difference]: Start difference. First operand 35794 states and 57152 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:51:58,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:52:00,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:52:04,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:04,206 INFO L93 Difference]: Finished difference Result 71603 states and 121854 transitions. [2022-11-03 02:52:04,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:52:04,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2022-11-03 02:52:04,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:04,694 INFO L225 Difference]: With dead ends: 71603 [2022-11-03 02:52:04,694 INFO L226 Difference]: Without dead ends: 35810 [2022-11-03 02:52:05,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:52:05,063 INFO L413 NwaCegarLoop]: 6453 mSDtfsCounter, 10 mSDsluCounter, 13373 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 19348 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:05,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 19348 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 728 Invalid, 2 Unknown, 0 Unchecked, 10.6s Time] [2022-11-03 02:52:05,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35810 states. [2022-11-03 02:52:09,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35810 to 35810. [2022-11-03 02:52:09,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35810 states, 24592 states have (on average 1.4315224463240077) internal successors, (35204), 24651 states have internal predecessors, (35204), 10757 states have call successors, (10757), 454 states have call predecessors, (10757), 460 states have return successors, (11207), 10720 states have call predecessors, (11207), 10750 states have call successors, (11207) [2022-11-03 02:52:10,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35810 states to 35810 states and 57168 transitions. [2022-11-03 02:52:10,075 INFO L78 Accepts]: Start accepts. Automaton has 35810 states and 57168 transitions. Word has length 59 [2022-11-03 02:52:10,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:10,075 INFO L495 AbstractCegarLoop]: Abstraction has 35810 states and 57168 transitions. [2022-11-03 02:52:10,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:52:10,076 INFO L276 IsEmpty]: Start isEmpty. Operand 35810 states and 57168 transitions. [2022-11-03 02:52:10,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-03 02:52:10,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:10,079 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:52:10,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:52:10,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a57e9d-433d-42f6-a9d7-450ff6ec4faf/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-03 02:52:10,308 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:10,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:10,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1210544398, now seen corresponding path program 1 times [2022-11-03 02:52:10,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:10,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782665480] [2022-11-03 02:52:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:10,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms