./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--osst.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/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_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--osst.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/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_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/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 bda3098802797ffc08e15000ad078a436cf195bb22a40ea321a7ea1bbc073e29 --- 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 01:54:26,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:54:26,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:54:26,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:54:26,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:54:26,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:54:26,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:54:26,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:54:26,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:54:26,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:54:26,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:54:26,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:54:26,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:54:26,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:54:26,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:54:26,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:54:26,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:54:26,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:54:26,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:54:26,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:54:26,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:54:26,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:54:26,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:54:26,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:54:26,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:54:26,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:54:26,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:54:26,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:54:26,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:54:26,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:54:26,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:54:26,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:54:26,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:54:26,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:54:26,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:54:26,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:54:26,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:54:26,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:54:26,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:54:26,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:54:26,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:54:26,516 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:54:26,566 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:54:26,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:54:26,567 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:54:26,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:54:26,568 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:54:26,568 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:54:26,569 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:54:26,569 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:54:26,569 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:54:26,569 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:54:26,571 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:54:26,571 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:54:26,571 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:54:26,571 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:54:26,572 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:54:26,572 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:54:26,572 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:54:26,572 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:54:26,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:54:26,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:54:26,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:54:26,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:54:26,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:54:26,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:54:26,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:54:26,575 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:54:26,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:54:26,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:54:26,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:54:26,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:54:26,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:54:26,577 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:54:26,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:54:26,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:54:26,577 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:54:26,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:54:26,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:54:26,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:54:26,578 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_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bda3098802797ffc08e15000ad078a436cf195bb22a40ea321a7ea1bbc073e29 [2022-11-03 01:54:26,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:54:26,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:54:26,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:54:26,960 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:54:26,961 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:54:26,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--osst.ko-entry_point.cil.out.i [2022-11-03 01:54:27,050 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/data/9b0512c5a/dd1e1cc8ba834a70bfd69e6f4def8931/FLAG26585ea71 [2022-11-03 01:54:28,295 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:54:28,297 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--osst.ko-entry_point.cil.out.i [2022-11-03 01:54:28,372 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/data/9b0512c5a/dd1e1cc8ba834a70bfd69e6f4def8931/FLAG26585ea71 [2022-11-03 01:54:28,568 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/data/9b0512c5a/dd1e1cc8ba834a70bfd69e6f4def8931 [2022-11-03 01:54:28,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:54:28,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:54:28,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:54:28,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:54:28,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:54:28,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:54:28" (1/1) ... [2022-11-03 01:54:28,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f507452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:28, skipping insertion in model container [2022-11-03 01:54:28,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:54:28" (1/1) ... [2022-11-03 01:54:28,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:54:28,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:54:32,198 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_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--osst.ko-entry_point.cil.out.i[353122,353135] [2022-11-03 01:54:32,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:54:32,333 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:54:32,950 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_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--osst.ko-entry_point.cil.out.i[353122,353135] [2022-11-03 01:54:32,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:54:33,110 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:54:33,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:33 WrapperNode [2022-11-03 01:54:33,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:54:33,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:54:33,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:54:33,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:54:33,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:33" (1/1) ... [2022-11-03 01:54:33,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:33" (1/1) ... [2022-11-03 01:54:33,656 INFO L138 Inliner]: procedures = 247, calls = 4073, calls flagged for inlining = 104, calls inlined = 99, statements flattened = 9462 [2022-11-03 01:54:33,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:54:33,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:54:33,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:54:33,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:54:33,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:33" (1/1) ... [2022-11-03 01:54:33,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:33" (1/1) ... [2022-11-03 01:54:33,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:33" (1/1) ... [2022-11-03 01:54:33,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:33" (1/1) ... [2022-11-03 01:54:34,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:33" (1/1) ... [2022-11-03 01:54:34,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:33" (1/1) ... [2022-11-03 01:54:34,192 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:33" (1/1) ... [2022-11-03 01:54:34,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:33" (1/1) ... [2022-11-03 01:54:34,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:54:34,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:54:34,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:54:34,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:54:34,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:33" (1/1) ... [2022-11-03 01:54:34,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:54:34,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:54:34,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:54:34,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:54:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 01:54:34,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 01:54:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure osst_log_options [2022-11-03 01:54:34,407 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_log_options [2022-11-03 01:54:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-03 01:54:34,408 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-03 01:54:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 01:54:34,408 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 01:54:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-03 01:54:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:54:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:54:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:54:34,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:54:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 01:54:34,409 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 01:54:34,410 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_behind_check [2022-11-03 01:54:34,410 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_behind_check [2022-11-03 01:54:34,410 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-03 01:54:34,410 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-03 01:54:34,411 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2022-11-03 01:54:34,411 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2022-11-03 01:54:34,411 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 01:54:34,411 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 01:54:34,411 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock [2022-11-03 01:54:34,412 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock [2022-11-03 01:54:34,412 INFO L130 BoogieDeclarations]: Found specification of procedure osst_release_request [2022-11-03 01:54:34,412 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_release_request [2022-11-03 01:54:34,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:54:34,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:54:34,413 INFO L130 BoogieDeclarations]: Found specification of procedure osst_set_frame_position [2022-11-03 01:54:34,413 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_set_frame_position [2022-11-03 01:54:34,413 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_header [2022-11-03 01:54:34,414 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_header [2022-11-03 01:54:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2022-11-03 01:54:34,414 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2022-11-03 01:54:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 01:54:34,415 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 01:54:34,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:54:34,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:54:34,416 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-03 01:54:34,416 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-03 01:54:34,416 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_frame [2022-11-03 01:54:34,416 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_frame [2022-11-03 01:54:34,416 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2022-11-03 01:54:34,417 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2022-11-03 01:54:34,417 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_put [2022-11-03 01:54:34,418 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_put [2022-11-03 01:54:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:54:34,419 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:54:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:54:34,420 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:54:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_write_buffer [2022-11-03 01:54:34,420 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_write_buffer [2022-11-03 01:54:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure osst_initiate_read [2022-11-03 01:54:34,421 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_initiate_read [2022-11-03 01:54:34,421 INFO L130 BoogieDeclarations]: Found specification of procedure osst_seek_logical_blk [2022-11-03 01:54:34,421 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_seek_logical_blk [2022-11-03 01:54:34,421 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_trailer [2022-11-03 01:54:34,421 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_trailer [2022-11-03 01:54:34,422 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_drive_buffer [2022-11-03 01:54:34,422 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_drive_buffer [2022-11-03 01:54:34,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:54:34,423 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 01:54:34,423 INFO L130 BoogieDeclarations]: Found specification of procedure osst_int_ioctl [2022-11-03 01:54:34,423 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_int_ioctl [2022-11-03 01:54:34,423 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2022-11-03 01:54:34,424 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2022-11-03 01:54:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2022-11-03 01:54:34,424 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2022-11-03 01:54:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:54:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_to_buffer [2022-11-03 01:54:34,426 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_to_buffer [2022-11-03 01:54:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_analyze_headers [2022-11-03 01:54:34,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_analyze_headers [2022-11-03 01:54:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 01:54:34,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 01:54:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-11-03 01:54:34,427 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-11-03 01:54:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_logical_frame [2022-11-03 01:54:34,427 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_logical_frame [2022-11-03 01:54:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2022-11-03 01:54:34,428 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2022-11-03 01:54:34,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:54:34,429 INFO L130 BoogieDeclarations]: Found specification of procedure osst_position_tape_and_confirm [2022-11-03 01:54:34,429 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_position_tape_and_confirm [2022-11-03 01:54:34,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:54:34,429 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-03 01:54:34,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-03 01:54:34,431 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 01:54:34,431 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 01:54:34,431 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 01:54:34,432 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 01:54:34,432 INFO L130 BoogieDeclarations]: Found specification of procedure osst_verify_frame [2022-11-03 01:54:34,433 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_verify_frame [2022-11-03 01:54:34,433 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 01:54:34,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 01:54:34,433 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_ready [2022-11-03 01:54:34,434 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_ready [2022-11-03 01:54:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 01:54:34,434 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 01:54:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reset_header [2022-11-03 01:54:34,435 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reset_header [2022-11-03 01:54:34,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:54:34,435 INFO L130 BoogieDeclarations]: Found specification of procedure osst_do_scsi [2022-11-03 01:54:34,436 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_do_scsi [2022-11-03 01:54:34,436 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-03 01:54:34,436 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-03 01:54:34,436 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2022-11-03 01:54:34,436 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2022-11-03 01:54:34,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:54:34,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:54:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure osst_chk_result [2022-11-03 01:54:34,441 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_chk_result [2022-11-03 01:54:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_add [2022-11-03 01:54:34,442 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_add [2022-11-03 01:54:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:54:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:54:34,445 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_backward [2022-11-03 01:54:34,446 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_backward [2022-11-03 01:54:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_back_buffer_and_rewrite [2022-11-03 01:54:34,452 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_back_buffer_and_rewrite [2022-11-03 01:54:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2022-11-03 01:54:34,453 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2022-11-03 01:54:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_cleanup [2022-11-03 01:54:34,453 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_cleanup [2022-11-03 01:54:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:54:34,454 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:54:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_buffer [2022-11-03 01:54:34,454 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_buffer [2022-11-03 01:54:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-03 01:54:34,454 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-03 01:54:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:54:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 01:54:34,455 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 01:54:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reposition_and_retry [2022-11-03 01:54:34,455 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reposition_and_retry [2022-11-03 01:54:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_filemark [2022-11-03 01:54:34,456 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_filemark [2022-11-03 01:54:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_destroy [2022-11-03 01:54:34,456 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_destroy [2022-11-03 01:54:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:54:34,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:54:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 01:54:34,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 01:54:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2022-11-03 01:54:34,457 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2022-11-03 01:54:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:54:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-11-03 01:54:34,458 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-11-03 01:54:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 01:54:34,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 01:54:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock [2022-11-03 01:54:34,459 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock [2022-11-03 01:54:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 01:54:34,459 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 01:54:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:54:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_write_header [2022-11-03 01:54:34,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_write_header [2022-11-03 01:54:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write [2022-11-03 01:54:34,460 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write [2022-11-03 01:54:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_frame [2022-11-03 01:54:34,460 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_frame [2022-11-03 01:54:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-11-03 01:54:34,461 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-11-03 01:54:34,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:54:34,461 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 01:54:34,461 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_frame_position [2022-11-03 01:54:34,461 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_frame_position [2022-11-03 01:54:34,461 INFO L130 BoogieDeclarations]: Found specification of procedure os_scsi_tape_flush [2022-11-03 01:54:34,462 INFO L138 BoogieDeclarations]: Found implementation of procedure os_scsi_tape_flush [2022-11-03 01:54:34,462 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_buffer [2022-11-03 01:54:34,462 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_buffer [2022-11-03 01:54:34,462 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_from_buffer [2022-11-03 01:54:34,462 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_from_buffer [2022-11-03 01:54:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 01:54:34,463 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 01:54:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-11-03 01:54:34,463 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-11-03 01:54:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2022-11-03 01:54:34,464 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2022-11-03 01:54:34,464 INFO L130 BoogieDeclarations]: Found specification of procedure osst_init_aux [2022-11-03 01:54:34,464 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_init_aux [2022-11-03 01:54:34,464 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_error_recovery [2022-11-03 01:54:34,464 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_error_recovery [2022-11-03 01:54:34,464 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_eod [2022-11-03 01:54:34,465 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_eod [2022-11-03 01:54:34,465 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 01:54:34,465 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 01:54:34,465 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_forward_slow [2022-11-03 01:54:34,465 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_forward_slow [2022-11-03 01:54:34,466 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-11-03 01:54:34,466 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-11-03 01:54:34,466 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2022-11-03 01:54:34,466 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2022-11-03 01:54:34,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_6 [2022-11-03 01:54:34,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_6 [2022-11-03 01:54:34,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:54:34,467 INFO L130 BoogieDeclarations]: Found specification of procedure osst_recover_wait_frame [2022-11-03 01:54:34,467 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_recover_wait_frame [2022-11-03 01:54:34,467 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_frame [2022-11-03 01:54:34,467 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_frame [2022-11-03 01:54:34,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:54:34,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:54:34,468 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 01:54:34,468 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 01:54:35,940 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:54:35,944 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:54:36,062 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:54:57,322 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:55:03,242 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:55:03,242 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:55:03,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:55:03 BoogieIcfgContainer [2022-11-03 01:55:03,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:55:03,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:55:03,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:55:03,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:55:03,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:54:28" (1/3) ... [2022-11-03 01:55:03,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6809f49c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:55:03, skipping insertion in model container [2022-11-03 01:55:03,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:33" (2/3) ... [2022-11-03 01:55:03,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6809f49c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:55:03, skipping insertion in model container [2022-11-03 01:55:03,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:55:03" (3/3) ... [2022-11-03 01:55:03,273 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--osst.ko-entry_point.cil.out.i [2022-11-03 01:55:03,300 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:55:03,300 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:55:03,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:55:03,462 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;@3f57d535, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:55:03,462 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:55:03,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 2214 states, 1504 states have (on average 1.408909574468085) internal successors, (2119), 1534 states have internal predecessors, (2119), 616 states have call successors, (616), 93 states have call predecessors, (616), 92 states have return successors, (605), 602 states have call predecessors, (605), 605 states have call successors, (605) [2022-11-03 01:55:03,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2022-11-03 01:55:03,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:03,516 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:03,517 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:03,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:03,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1129522539, now seen corresponding path program 1 times [2022-11-03 01:55:03,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:03,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186334018] [2022-11-03 01:55:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:03,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:05,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2022-11-03 01:55:05,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:05,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186334018] [2022-11-03 01:55:05,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186334018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:05,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:05,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:55:05,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140163284] [2022-11-03 01:55:05,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:05,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:55:05,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:05,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:55:05,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:55:05,772 INFO L87 Difference]: Start difference. First operand has 2214 states, 1504 states have (on average 1.408909574468085) internal successors, (2119), 1534 states have internal predecessors, (2119), 616 states have call successors, (616), 93 states have call predecessors, (616), 92 states have return successors, (605), 602 states have call predecessors, (605), 605 states have call successors, (605) Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-03 01:55:07,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:11,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:55:13,427 WARN L539 Checker$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 01:55:20,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:23,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:23,531 INFO L93 Difference]: Finished difference Result 6397 states and 9756 transitions. [2022-11-03 01:55:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:55:23,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 401 [2022-11-03 01:55:23,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:23,625 INFO L225 Difference]: With dead ends: 6397 [2022-11-03 01:55:23,626 INFO L226 Difference]: Without dead ends: 4218 [2022-11-03 01:55:23,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:55:23,667 INFO L413 NwaCegarLoop]: 3515 mSDtfsCounter, 3096 mSDsluCounter, 3288 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3096 SdHoareTripleChecker+Valid, 6454 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:23,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3096 Valid, 6454 Invalid, 729 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 722 Invalid, 4 Unknown, 0 Unchecked, 17.2s Time] [2022-11-03 01:55:23,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4218 states. [2022-11-03 01:55:24,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4218 to 4218. [2022-11-03 01:55:24,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4218 states, 2899 states have (on average 1.4025526043463263) internal successors, (4066), 2927 states have internal predecessors, (4066), 1139 states have call successors, (1139), 180 states have call predecessors, (1139), 179 states have return successors, (1138), 1133 states have call predecessors, (1138), 1138 states have call successors, (1138) [2022-11-03 01:55:24,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4218 states to 4218 states and 6343 transitions. [2022-11-03 01:55:24,128 INFO L78 Accepts]: Start accepts. Automaton has 4218 states and 6343 transitions. Word has length 401 [2022-11-03 01:55:24,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:24,134 INFO L495 AbstractCegarLoop]: Abstraction has 4218 states and 6343 transitions. [2022-11-03 01:55:24,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-03 01:55:24,135 INFO L276 IsEmpty]: Start isEmpty. Operand 4218 states and 6343 transitions. [2022-11-03 01:55:24,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-11-03 01:55:24,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:24,160 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:24,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:55:24,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:24,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:24,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1788201833, now seen corresponding path program 1 times [2022-11-03 01:55:24,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:24,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772364755] [2022-11-03 01:55:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:24,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:25,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2022-11-03 01:55:25,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:25,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772364755] [2022-11-03 01:55:25,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772364755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:25,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:25,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:55:25,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389452169] [2022-11-03 01:55:25,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:25,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:55:25,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:25,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:55:25,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:55:25,465 INFO L87 Difference]: Start difference. First operand 4218 states and 6343 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2022-11-03 01:55:27,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:31,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:55:33,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:39,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:53,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:53,769 INFO L93 Difference]: Finished difference Result 11948 states and 18385 transitions. [2022-11-03 01:55:53,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:55:53,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 410 [2022-11-03 01:55:53,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:53,853 INFO L225 Difference]: With dead ends: 11948 [2022-11-03 01:55:53,853 INFO L226 Difference]: Without dead ends: 7801 [2022-11-03 01:55:53,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:55:53,895 INFO L413 NwaCegarLoop]: 4436 mSDtfsCounter, 2388 mSDsluCounter, 8692 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 333 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2719 SdHoareTripleChecker+Valid, 12218 SdHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:53,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2719 Valid, 12218 Invalid, 1762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [333 Valid, 1425 Invalid, 4 Unknown, 0 Unchecked, 27.8s Time] [2022-11-03 01:55:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7801 states. [2022-11-03 01:55:54,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7801 to 4220. [2022-11-03 01:55:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4220 states, 2901 states have (on average 1.4022750775594623) internal successors, (4068), 2929 states have internal predecessors, (4068), 1139 states have call successors, (1139), 180 states have call predecessors, (1139), 179 states have return successors, (1138), 1133 states have call predecessors, (1138), 1138 states have call successors, (1138) [2022-11-03 01:55:54,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4220 states to 4220 states and 6345 transitions. [2022-11-03 01:55:54,439 INFO L78 Accepts]: Start accepts. Automaton has 4220 states and 6345 transitions. Word has length 410 [2022-11-03 01:55:54,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:54,448 INFO L495 AbstractCegarLoop]: Abstraction has 4220 states and 6345 transitions. [2022-11-03 01:55:54,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2022-11-03 01:55:54,449 INFO L276 IsEmpty]: Start isEmpty. Operand 4220 states and 6345 transitions. [2022-11-03 01:55:54,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-03 01:55:54,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:54,466 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:54,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:55:54,467 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:54,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:54,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1699580940, now seen corresponding path program 1 times [2022-11-03 01:55:54,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:54,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377680255] [2022-11-03 01:55:54,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:54,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:55,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2022-11-03 01:55:55,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:55,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377680255] [2022-11-03 01:55:55,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377680255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:55,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:55,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:55:55,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518521992] [2022-11-03 01:55:55,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:55,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:55:55,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:55,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:55:55,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:55:55,349 INFO L87 Difference]: Start difference. First operand 4220 states and 6345 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 01:55:57,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:00,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:56:02,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:09,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:12,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:12,141 INFO L93 Difference]: Finished difference Result 8318 states and 12509 transitions. [2022-11-03 01:56:12,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:56:12,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 414 [2022-11-03 01:56:12,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:12,227 INFO L225 Difference]: With dead ends: 8318 [2022-11-03 01:56:12,227 INFO L226 Difference]: Without dead ends: 8287 [2022-11-03 01:56:12,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:12,241 INFO L413 NwaCegarLoop]: 3519 mSDtfsCounter, 3128 mSDsluCounter, 3195 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3128 SdHoareTripleChecker+Valid, 6360 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:12,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3128 Valid, 6360 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 718 Invalid, 3 Unknown, 0 Unchecked, 16.4s Time] [2022-11-03 01:56:12,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8287 states. [2022-11-03 01:56:12,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8287 to 8287. [2022-11-03 01:56:12,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8287 states, 5719 states have (on average 1.405140758873929) internal successors, (8036), 5771 states have internal predecessors, (8036), 2216 states have call successors, (2216), 352 states have call predecessors, (2216), 351 states have return successors, (2215), 2206 states have call predecessors, (2215), 2215 states have call successors, (2215) [2022-11-03 01:56:12,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8287 states to 8287 states and 12467 transitions. [2022-11-03 01:56:12,947 INFO L78 Accepts]: Start accepts. Automaton has 8287 states and 12467 transitions. Word has length 414 [2022-11-03 01:56:12,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:12,950 INFO L495 AbstractCegarLoop]: Abstraction has 8287 states and 12467 transitions. [2022-11-03 01:56:12,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 01:56:12,952 INFO L276 IsEmpty]: Start isEmpty. Operand 8287 states and 12467 transitions. [2022-11-03 01:56:12,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2022-11-03 01:56:12,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:12,983 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:12,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:56:12,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:12,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:12,985 INFO L85 PathProgramCache]: Analyzing trace with hash 128235041, now seen corresponding path program 1 times [2022-11-03 01:56:12,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:12,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071795778] [2022-11-03 01:56:12,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:12,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:13,290 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:56:13,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982986631] [2022-11-03 01:56:13,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:13,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:13,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:13,296 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:56:13,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:56:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:15,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 5513 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:56:15,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:15,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3205 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3198 trivial. 0 not checked. [2022-11-03 01:56:15,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:15,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:15,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071795778] [2022-11-03 01:56:15,927 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:56:15,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982986631] [2022-11-03 01:56:15,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982986631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:15,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:15,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:56:15,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308665172] [2022-11-03 01:56:15,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:15,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:56:15,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:15,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:56:15,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:15,930 INFO L87 Difference]: Start difference. First operand 8287 states and 12467 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 01:56:17,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:20,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:24,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:56:26,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:28,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:32,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:32,337 INFO L93 Difference]: Finished difference Result 17417 states and 26142 transitions. [2022-11-03 01:56:32,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:56:32,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 463 [2022-11-03 01:56:32,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:32,425 INFO L225 Difference]: With dead ends: 17417 [2022-11-03 01:56:32,425 INFO L226 Difference]: Without dead ends: 9201 [2022-11-03 01:56:32,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 461 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 01:56:32,499 INFO L413 NwaCegarLoop]: 2987 mSDtfsCounter, 356 mSDsluCounter, 3236 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 11 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 5876 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:32,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 5876 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 746 Invalid, 4 Unknown, 0 Unchecked, 16.1s Time] [2022-11-03 01:56:32,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9201 states. [2022-11-03 01:56:32,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9201 to 9187. [2022-11-03 01:56:32,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9187 states, 6389 states have (on average 1.4064798873063078) internal successors, (8986), 6443 states have internal predecessors, (8986), 2374 states have call successors, (2374), 424 states have call predecessors, (2374), 423 states have return successors, (2373), 2364 states have call predecessors, (2373), 2373 states have call successors, (2373) [2022-11-03 01:56:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9187 states to 9187 states and 13733 transitions. [2022-11-03 01:56:33,057 INFO L78 Accepts]: Start accepts. Automaton has 9187 states and 13733 transitions. Word has length 463 [2022-11-03 01:56:33,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:33,058 INFO L495 AbstractCegarLoop]: Abstraction has 9187 states and 13733 transitions. [2022-11-03 01:56:33,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 01:56:33,059 INFO L276 IsEmpty]: Start isEmpty. Operand 9187 states and 13733 transitions. [2022-11-03 01:56:33,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-11-03 01:56:33,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:33,083 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:33,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:33,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:33,311 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:33,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:33,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1645962510, now seen corresponding path program 1 times [2022-11-03 01:56:33,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:33,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349226996] [2022-11-03 01:56:33,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:33,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3221 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3216 trivial. 0 not checked. [2022-11-03 01:56:34,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:34,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349226996] [2022-11-03 01:56:34,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349226996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:34,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:34,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:56:34,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347431862] [2022-11-03 01:56:34,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:34,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:56:34,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:34,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:56:34,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:34,225 INFO L87 Difference]: Start difference. First operand 9187 states and 13733 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-03 01:56:38,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:41,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:56:44,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:46,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:49,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:49,855 INFO L93 Difference]: Finished difference Result 26608 states and 39827 transitions. [2022-11-03 01:56:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:56:49,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 494 [2022-11-03 01:56:49,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:49,990 INFO L225 Difference]: With dead ends: 26608 [2022-11-03 01:56:49,990 INFO L226 Difference]: Without dead ends: 17492 [2022-11-03 01:56:50,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:50,061 INFO L413 NwaCegarLoop]: 3530 mSDtfsCounter, 3100 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3100 SdHoareTripleChecker+Valid, 6364 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:50,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3100 Valid, 6364 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 736 Invalid, 3 Unknown, 0 Unchecked, 15.0s Time] [2022-11-03 01:56:50,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17492 states. [2022-11-03 01:56:51,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17492 to 17486. [2022-11-03 01:56:51,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17486 states, 12211 states have (on average 1.4087298337564491) internal successors, (17202), 12309 states have internal predecessors, (17202), 4492 states have call successors, (4492), 783 states have call predecessors, (4492), 782 states have return successors, (4491), 4473 states have call predecessors, (4491), 4491 states have call successors, (4491) [2022-11-03 01:56:51,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17486 states to 17486 states and 26185 transitions. [2022-11-03 01:56:51,326 INFO L78 Accepts]: Start accepts. Automaton has 17486 states and 26185 transitions. Word has length 494 [2022-11-03 01:56:51,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:51,327 INFO L495 AbstractCegarLoop]: Abstraction has 17486 states and 26185 transitions. [2022-11-03 01:56:51,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-03 01:56:51,328 INFO L276 IsEmpty]: Start isEmpty. Operand 17486 states and 26185 transitions. [2022-11-03 01:56:51,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2022-11-03 01:56:51,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:51,380 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 27, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:51,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:56:51,381 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:51,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:51,382 INFO L85 PathProgramCache]: Analyzing trace with hash 308077585, now seen corresponding path program 1 times [2022-11-03 01:56:51,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:51,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803996738] [2022-11-03 01:56:51,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:51,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:51,702 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:56:51,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554553818] [2022-11-03 01:56:51,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:51,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:51,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:51,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:56:51,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:56:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:54,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 5955 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:56:54,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3734 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 3234 trivial. 0 not checked. [2022-11-03 01:56:54,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:54,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:54,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803996738] [2022-11-03 01:56:54,899 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:56:54,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554553818] [2022-11-03 01:56:54,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554553818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:54,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:54,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:56:54,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808628530] [2022-11-03 01:56:54,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:54,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:56:54,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:54,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:56:54,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:54,902 INFO L87 Difference]: Start difference. First operand 17486 states and 26185 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-03 01:56:56,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:59,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:03,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:57:07,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:08,500 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 01:57:13,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:13,278 INFO L93 Difference]: Finished difference Result 26076 states and 39079 transitions. [2022-11-03 01:57:13,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:57:13,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 524 [2022-11-03 01:57:13,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:13,445 INFO L225 Difference]: With dead ends: 26076 [2022-11-03 01:57:13,446 INFO L226 Difference]: Without dead ends: 25972 [2022-11-03 01:57:13,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 522 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 01:57:13,471 INFO L413 NwaCegarLoop]: 3591 mSDtfsCounter, 3074 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3074 SdHoareTripleChecker+Valid, 6396 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:13,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3074 Valid, 6396 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 742 Invalid, 3 Unknown, 0 Unchecked, 17.7s Time] [2022-11-03 01:57:13,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25972 states. [2022-11-03 01:57:14,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25972 to 25884. [2022-11-03 01:57:14,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25884 states, 18087 states have (on average 1.4101288218057169) internal successors, (25505), 18229 states have internal predecessors, (25505), 6657 states have call successors, (6657), 1140 states have call predecessors, (6657), 1139 states have return successors, (6656), 6630 states have call predecessors, (6656), 6656 states have call successors, (6656) [2022-11-03 01:57:15,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25884 states to 25884 states and 38818 transitions. [2022-11-03 01:57:15,159 INFO L78 Accepts]: Start accepts. Automaton has 25884 states and 38818 transitions. Word has length 524 [2022-11-03 01:57:15,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:15,160 INFO L495 AbstractCegarLoop]: Abstraction has 25884 states and 38818 transitions. [2022-11-03 01:57:15,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-03 01:57:15,161 INFO L276 IsEmpty]: Start isEmpty. Operand 25884 states and 38818 transitions. [2022-11-03 01:57:15,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2022-11-03 01:57:15,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:15,240 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:57:15,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:57:15,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:15,455 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:15,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:15,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1215140029, now seen corresponding path program 1 times [2022-11-03 01:57:15,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:15,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44346653] [2022-11-03 01:57:15,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:15,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:16,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3508 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3491 trivial. 0 not checked. [2022-11-03 01:57:16,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:16,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44346653] [2022-11-03 01:57:16,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44346653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:16,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:16,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:57:16,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156587776] [2022-11-03 01:57:16,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:16,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:57:16,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:16,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:57:16,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:57:16,998 INFO L87 Difference]: Start difference. First operand 25884 states and 38818 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-03 01:57:19,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:21,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:25,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:29,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:57:34,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:36,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:47,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:47,325 INFO L93 Difference]: Finished difference Result 74729 states and 114619 transitions. [2022-11-03 01:57:47,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:57:47,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 544 [2022-11-03 01:57:47,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:47,646 INFO L225 Difference]: With dead ends: 74729 [2022-11-03 01:57:47,646 INFO L226 Difference]: Without dead ends: 48924 [2022-11-03 01:57:47,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:57:47,909 INFO L413 NwaCegarLoop]: 4483 mSDtfsCounter, 2074 mSDsluCounter, 8548 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 321 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2394 SdHoareTripleChecker+Valid, 12149 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:47,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2394 Valid, 12149 Invalid, 1735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1411 Invalid, 3 Unknown, 0 Unchecked, 28.2s Time] [2022-11-03 01:57:47,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48924 states. [2022-11-03 01:57:50,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48924 to 25908. [2022-11-03 01:57:50,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25908 states, 18111 states have (on average 1.409585334879355) internal successors, (25529), 18253 states have internal predecessors, (25529), 6657 states have call successors, (6657), 1140 states have call predecessors, (6657), 1139 states have return successors, (6656), 6630 states have call predecessors, (6656), 6656 states have call successors, (6656) [2022-11-03 01:57:50,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25908 states to 25908 states and 38842 transitions. [2022-11-03 01:57:50,439 INFO L78 Accepts]: Start accepts. Automaton has 25908 states and 38842 transitions. Word has length 544 [2022-11-03 01:57:50,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:50,441 INFO L495 AbstractCegarLoop]: Abstraction has 25908 states and 38842 transitions. [2022-11-03 01:57:50,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-03 01:57:50,441 INFO L276 IsEmpty]: Start isEmpty. Operand 25908 states and 38842 transitions. [2022-11-03 01:57:50,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2022-11-03 01:57:50,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:50,516 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:57:50,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:57:50,517 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:50,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:50,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1147111769, now seen corresponding path program 1 times [2022-11-03 01:57:50,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:50,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561513031] [2022-11-03 01:57:50,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:50,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:50,825 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:57:50,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738513951] [2022-11-03 01:57:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:50,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:50,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:50,828 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:57:50,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:57:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:53,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 6043 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:57:53,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 776 proven. 0 refuted. 0 times theorem prover too weak. 3228 trivial. 0 not checked. [2022-11-03 01:57:54,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:57:54,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:54,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561513031] [2022-11-03 01:57:54,191 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:57:54,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738513951] [2022-11-03 01:57:54,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738513951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:54,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:54,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:57:54,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032357589] [2022-11-03 01:57:54,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:54,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:57:54,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:54,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:57:54,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:57:54,194 INFO L87 Difference]: Start difference. First operand 25908 states and 38842 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 3 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-03 01:57:56,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:59,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:03,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:58:08,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:10,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:58:13,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:13,330 INFO L93 Difference]: Finished difference Result 66410 states and 98816 transitions. [2022-11-03 01:58:13,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:13,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 3 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 536 [2022-11-03 01:58:13,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:13,631 INFO L225 Difference]: With dead ends: 66410 [2022-11-03 01:58:13,631 INFO L226 Difference]: Without dead ends: 40581 [2022-11-03 01:58:13,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 534 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 01:58:13,775 INFO L413 NwaCegarLoop]: 3297 mSDtfsCounter, 2362 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 16 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2362 SdHoareTripleChecker+Valid, 5716 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:13,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2362 Valid, 5716 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 694 Invalid, 4 Unknown, 0 Unchecked, 17.4s Time] [2022-11-03 01:58:13,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40581 states. [2022-11-03 01:58:15,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40581 to 40558. [2022-11-03 01:58:15,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40558 states, 28181 states have (on average 1.3944501614563003) internal successors, (39297), 28413 states have internal predecessors, (39297), 10353 states have call successors, (10353), 2024 states have call predecessors, (10353), 2023 states have return successors, (10352), 10314 states have call predecessors, (10352), 10352 states have call successors, (10352) [2022-11-03 01:58:16,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40558 states to 40558 states and 60002 transitions. [2022-11-03 01:58:16,230 INFO L78 Accepts]: Start accepts. Automaton has 40558 states and 60002 transitions. Word has length 536 [2022-11-03 01:58:16,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:16,231 INFO L495 AbstractCegarLoop]: Abstraction has 40558 states and 60002 transitions. [2022-11-03 01:58:16,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 3 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-03 01:58:16,231 INFO L276 IsEmpty]: Start isEmpty. Operand 40558 states and 60002 transitions. [2022-11-03 01:58:16,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2022-11-03 01:58:16,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:16,296 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:16,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:16,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:16,511 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:16,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:16,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1111672292, now seen corresponding path program 1 times [2022-11-03 01:58:16,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:16,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395299772] [2022-11-03 01:58:16,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:16,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:18,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3508 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3491 trivial. 0 not checked. [2022-11-03 01:58:18,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:18,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395299772] [2022-11-03 01:58:18,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395299772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:18,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:18,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:18,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601439038] [2022-11-03 01:58:18,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:18,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:18,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:18,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:18,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:18,114 INFO L87 Difference]: Start difference. First operand 40558 states and 60002 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-03 01:58:20,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:23,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:27,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:58:31,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:36,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:39,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:39,638 INFO L93 Difference]: Finished difference Result 70082 states and 104867 transitions. [2022-11-03 01:58:39,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:39,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 547 [2022-11-03 01:58:39,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:40,141 INFO L225 Difference]: With dead ends: 70082 [2022-11-03 01:58:40,141 INFO L226 Difference]: Without dead ends: 49732 [2022-11-03 01:58:40,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:40,261 INFO L413 NwaCegarLoop]: 3807 mSDtfsCounter, 642 mSDsluCounter, 3448 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 6908 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:40,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 6908 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 815 Invalid, 4 Unknown, 0 Unchecked, 19.5s Time] [2022-11-03 01:58:40,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49732 states. [2022-11-03 01:58:42,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49732 to 40560. [2022-11-03 01:58:42,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40560 states, 28183 states have (on average 1.3944221693928964) internal successors, (39299), 28415 states have internal predecessors, (39299), 10353 states have call successors, (10353), 2024 states have call predecessors, (10353), 2023 states have return successors, (10352), 10314 states have call predecessors, (10352), 10352 states have call successors, (10352) [2022-11-03 01:58:42,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40560 states to 40560 states and 60004 transitions. [2022-11-03 01:58:42,916 INFO L78 Accepts]: Start accepts. Automaton has 40560 states and 60004 transitions. Word has length 547 [2022-11-03 01:58:42,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:42,917 INFO L495 AbstractCegarLoop]: Abstraction has 40560 states and 60004 transitions. [2022-11-03 01:58:42,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-03 01:58:42,917 INFO L276 IsEmpty]: Start isEmpty. Operand 40560 states and 60004 transitions. [2022-11-03 01:58:42,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2022-11-03 01:58:42,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:42,979 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:42,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 01:58:42,979 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:42,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:42,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1028997699, now seen corresponding path program 1 times [2022-11-03 01:58:42,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:42,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054725798] [2022-11-03 01:58:42,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:42,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:44,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3510 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 3492 trivial. 0 not checked. [2022-11-03 01:58:44,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:44,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054725798] [2022-11-03 01:58:44,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054725798] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:44,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064640621] [2022-11-03 01:58:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:44,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:44,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:44,570 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:44,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:58:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:47,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 6394 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:58:47,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:48,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3510 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3510 trivial. 0 not checked. [2022-11-03 01:58:48,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:58:48,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064640621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:48,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:58:48,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-03 01:58:48,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087353054] [2022-11-03 01:58:48,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:48,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:48,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:48,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:48,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:58:48,720 INFO L87 Difference]: Start difference. First operand 40560 states and 60004 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2022-11-03 01:58:50,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:53,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:57,069 WARN L539 Checker$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 01:58:59,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:04,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:08,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:08,407 INFO L93 Difference]: Finished difference Result 60908 states and 90108 transitions. [2022-11-03 01:59:08,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:59:08,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 549 [2022-11-03 01:59:08,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:08,884 INFO L225 Difference]: With dead ends: 60908 [2022-11-03 01:59:08,885 INFO L226 Difference]: Without dead ends: 60828 [2022-11-03 01:59:08,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:59:08,918 INFO L413 NwaCegarLoop]: 3512 mSDtfsCounter, 3054 mSDsluCounter, 3195 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3054 SdHoareTripleChecker+Valid, 6353 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:08,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3054 Valid, 6353 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 711 Invalid, 3 Unknown, 0 Unchecked, 17.6s Time] [2022-11-03 01:59:08,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60828 states. [2022-11-03 01:59:11,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60828 to 60740. [2022-11-03 01:59:11,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60740 states, 42206 states have (on average 1.394422593943989) internal successors, (58853), 42553 states have internal predecessors, (58853), 15505 states have call successors, (15505), 3029 states have call predecessors, (15505), 3028 states have return successors, (15504), 15447 states have call predecessors, (15504), 15504 states have call successors, (15504) [2022-11-03 01:59:11,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60740 states to 60740 states and 89862 transitions. [2022-11-03 01:59:11,605 INFO L78 Accepts]: Start accepts. Automaton has 60740 states and 89862 transitions. Word has length 549 [2022-11-03 01:59:11,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:11,605 INFO L495 AbstractCegarLoop]: Abstraction has 60740 states and 89862 transitions. [2022-11-03 01:59:11,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2022-11-03 01:59:11,606 INFO L276 IsEmpty]: Start isEmpty. Operand 60740 states and 89862 transitions. [2022-11-03 01:59:11,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2022-11-03 01:59:11,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:11,716 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:11,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-03 01:59:11,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 01:59:11,917 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:11,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:11,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1488770836, now seen corresponding path program 1 times [2022-11-03 01:59:11,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:11,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692549660] [2022-11-03 01:59:11,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:11,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:12,353 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:59:12,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630509533] [2022-11-03 01:59:12,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:12,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:12,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:59:12,359 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:59:12,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 01:59:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:15,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 6263 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:59:15,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:16,981 INFO L134 CoverageAnalysis]: Checked inductivity of 4039 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4039 trivial. 0 not checked. [2022-11-03 01:59:16,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:59:16,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:16,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692549660] [2022-11-03 01:59:16,983 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:59:16,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630509533] [2022-11-03 01:59:16,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630509533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:16,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:59:16,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:59:16,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326355756] [2022-11-03 01:59:16,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:16,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:59:16,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:16,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:59:16,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:16,986 INFO L87 Difference]: Start difference. First operand 60740 states and 89862 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2022-11-03 01:59:20,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:24,484 WARN L539 Checker$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 01:59:28,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:35,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:35,524 INFO L93 Difference]: Finished difference Result 101158 states and 149654 transitions. [2022-11-03 01:59:35,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:59:35,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 575 [2022-11-03 01:59:35,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:36,073 INFO L225 Difference]: With dead ends: 101158 [2022-11-03 01:59:36,073 INFO L226 Difference]: Without dead ends: 101078 [2022-11-03 01:59:36,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 573 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 01:59:36,250 INFO L413 NwaCegarLoop]: 3580 mSDtfsCounter, 2968 mSDsluCounter, 3194 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2968 SdHoareTripleChecker+Valid, 6421 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:36,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2968 Valid, 6421 Invalid, 723 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 720 Invalid, 3 Unknown, 0 Unchecked, 15.4s Time] [2022-11-03 01:59:36,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101078 states. [2022-11-03 01:59:40,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101078 to 100990. [2022-11-03 01:59:40,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100990 states, 70192 states have (on average 1.3944466605881012) internal successors, (97879), 70753 states have internal predecessors, (97879), 25765 states have call successors, (25765), 5033 states have call predecessors, (25765), 5032 states have return successors, (25764), 25683 states have call predecessors, (25764), 25764 states have call successors, (25764) [2022-11-03 01:59:41,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100990 states to 100990 states and 149408 transitions. [2022-11-03 01:59:41,223 INFO L78 Accepts]: Start accepts. Automaton has 100990 states and 149408 transitions. Word has length 575 [2022-11-03 01:59:41,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:41,224 INFO L495 AbstractCegarLoop]: Abstraction has 100990 states and 149408 transitions. [2022-11-03 01:59:41,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2022-11-03 01:59:41,225 INFO L276 IsEmpty]: Start isEmpty. Operand 100990 states and 149408 transitions. [2022-11-03 01:59:41,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2022-11-03 01:59:41,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:41,486 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:41,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:59:41,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 01:59:41,695 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:41,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:41,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1368654665, now seen corresponding path program 1 times [2022-11-03 01:59:41,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:41,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131585123] [2022-11-03 01:59:41,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:41,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:42,414 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:59:42,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345297218] [2022-11-03 01:59:42,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:42,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:42,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:59:42,416 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:59:42,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 01:59:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:45,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 7409 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:59:45,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:45,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3533 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 3257 trivial. 0 not checked. [2022-11-03 01:59:45,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:59:45,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:45,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131585123] [2022-11-03 01:59:45,975 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:59:45,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345297218] [2022-11-03 01:59:45,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345297218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:45,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:59:45,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:59:45,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074504701] [2022-11-03 01:59:45,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:45,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:59:45,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:45,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:59:45,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:45,978 INFO L87 Difference]: Start difference. First operand 100990 states and 149408 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 3 states have call successors, (69), 3 states have call predecessors, (69), 3 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) [2022-11-03 01:59:47,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:51,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:55,075 WARN L539 Checker$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 01:59:58,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:06,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:06,143 INFO L93 Difference]: Finished difference Result 143582 states and 212422 transitions. [2022-11-03 02:00:06,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:00:06,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 3 states have call successors, (69), 3 states have call predecessors, (69), 3 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) Word has length 611 [2022-11-03 02:00:06,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:06,931 INFO L225 Difference]: With dead ends: 143582 [2022-11-03 02:00:06,931 INFO L226 Difference]: Without dead ends: 103050 [2022-11-03 02:00:07,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 609 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 02:00:07,141 INFO L413 NwaCegarLoop]: 3000 mSDtfsCounter, 421 mSDsluCounter, 3135 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 5789 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:07,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 5789 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 746 Invalid, 2 Unknown, 0 Unchecked, 16.6s Time] [2022-11-03 02:00:07,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103050 states. [2022-11-03 02:00:11,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103050 to 102927. [2022-11-03 02:00:11,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102927 states, 71696 states have (on average 1.3954056014282525) internal successors, (100045), 72267 states have internal predecessors, (100045), 26071 states have call successors, (26071), 5160 states have call predecessors, (26071), 5159 states have return successors, (26070), 25987 states have call predecessors, (26070), 26070 states have call successors, (26070) [2022-11-03 02:00:12,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102927 states to 102927 states and 152186 transitions. [2022-11-03 02:00:12,496 INFO L78 Accepts]: Start accepts. Automaton has 102927 states and 152186 transitions. Word has length 611 [2022-11-03 02:00:12,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:12,497 INFO L495 AbstractCegarLoop]: Abstraction has 102927 states and 152186 transitions. [2022-11-03 02:00:12,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 3 states have call successors, (69), 3 states have call predecessors, (69), 3 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) [2022-11-03 02:00:12,498 INFO L276 IsEmpty]: Start isEmpty. Operand 102927 states and 152186 transitions. [2022-11-03 02:00:12,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2022-11-03 02:00:12,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:12,751 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:12,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:00:12,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:00:12,966 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:12,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:12,967 INFO L85 PathProgramCache]: Analyzing trace with hash -578829710, now seen corresponding path program 1 times [2022-11-03 02:00:12,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:12,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806089776] [2022-11-03 02:00:12,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:12,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:13,297 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:00:13,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769871524] [2022-11-03 02:00:13,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:13,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:00:13,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:00:13,299 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:00:13,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f1da75b-c0c5-4a31-b55c-e7e86ba9989c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:00:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:16,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 7660 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:00:16,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:17,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4061 backedges. 806 proven. 0 refuted. 0 times theorem prover too weak. 3255 trivial. 0 not checked. [2022-11-03 02:00:17,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:00:17,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:17,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806089776] [2022-11-03 02:00:17,108 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:00:17,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769871524] [2022-11-03 02:00:17,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769871524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:17,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:17,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:00:17,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589387808] [2022-11-03 02:00:17,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:17,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:00:17,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:17,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:00:17,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:17,111 INFO L87 Difference]: Start difference. First operand 102927 states and 152186 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 3 states have call successors, (71), 3 states have call predecessors, (71), 3 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) [2022-11-03 02:00:20,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:24,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:00:28,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:30,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []