./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.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_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/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_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/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_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/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 65cc93bea37c503291576929a444106bffa9d5b7b84b8d294ee7e7120b60ffa5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:09:07,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:09:07,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:09:07,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:09:07,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:09:07,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:09:07,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:09:07,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:09:07,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:09:07,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:09:07,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:09:07,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:09:07,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:09:07,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:09:07,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:09:07,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:09:07,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:09:07,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:09:07,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:09:07,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:09:07,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:09:07,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:09:07,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:09:07,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:09:07,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:09:07,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:09:07,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:09:07,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:09:07,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:09:07,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:09:07,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:09:07,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:09:07,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:09:07,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:09:07,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:09:07,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:09:07,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:09:07,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:09:07,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:09:07,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:09:07,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:09:07,281 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:09:07,319 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:09:07,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:09:07,320 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:09:07,320 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:09:07,321 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:09:07,321 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:09:07,321 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:09:07,322 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:09:07,322 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:09:07,322 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:09:07,322 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:09:07,323 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:09:07,323 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:09:07,323 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:09:07,323 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:09:07,324 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:09:07,324 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:09:07,324 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:09:07,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:09:07,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:09:07,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:09:07,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:09:07,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:09:07,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:09:07,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:09:07,327 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:09:07,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:09:07,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:09:07,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:09:07,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:09:07,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:09:07,329 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:09:07,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:09:07,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:09:07,330 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:09:07,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:09:07,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:09:07,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:09:07,331 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_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65cc93bea37c503291576929a444106bffa9d5b7b84b8d294ee7e7120b60ffa5 [2022-11-03 02:09:07,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:09:07,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:09:07,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:09:07,702 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:09:07,703 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:09:07,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i [2022-11-03 02:09:07,793 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/data/d0f65ad7d/ad2644da90ad4a30ad0d005ad2b2a3a1/FLAGea8e52686 [2022-11-03 02:09:08,694 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:09:08,695 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i [2022-11-03 02:09:08,747 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/data/d0f65ad7d/ad2644da90ad4a30ad0d005ad2b2a3a1/FLAGea8e52686 [2022-11-03 02:09:09,188 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/data/d0f65ad7d/ad2644da90ad4a30ad0d005ad2b2a3a1 [2022-11-03 02:09:09,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:09:09,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:09:09,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:09:09,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:09:09,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:09:09,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:09:09" (1/1) ... [2022-11-03 02:09:09,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac431d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:09, skipping insertion in model container [2022-11-03 02:09:09,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:09:09" (1/1) ... [2022-11-03 02:09:09,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:09:09,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:09:10,513 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_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i[138616,138629] [2022-11-03 02:09:10,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:09:10,642 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:09:11,011 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_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i[138616,138629] [2022-11-03 02:09:11,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:09:11,136 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:09:11,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:11 WrapperNode [2022-11-03 02:09:11,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:09:11,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:09:11,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:09:11,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:09:11,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:11" (1/1) ... [2022-11-03 02:09:11,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:11" (1/1) ... [2022-11-03 02:09:11,411 INFO L138 Inliner]: procedures = 161, calls = 836, calls flagged for inlining = 53, calls inlined = 28, statements flattened = 1112 [2022-11-03 02:09:11,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:09:11,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:09:11,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:09:11,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:09:11,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:11" (1/1) ... [2022-11-03 02:09:11,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:11" (1/1) ... [2022-11-03 02:09:11,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:11" (1/1) ... [2022-11-03 02:09:11,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:11" (1/1) ... [2022-11-03 02:09:11,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:11" (1/1) ... [2022-11-03 02:09:11,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:11" (1/1) ... [2022-11-03 02:09:11,554 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:11" (1/1) ... [2022-11-03 02:09:11,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:11" (1/1) ... [2022-11-03 02:09:11,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:09:11,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:09:11,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:09:11,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:09:11,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:11" (1/1) ... [2022-11-03 02:09:11,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:09:11,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:09:11,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:09:11,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:09:11,684 INFO L130 BoogieDeclarations]: Found specification of procedure pi_release [2022-11-03 02:09:11,685 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_release [2022-11-03 02:09:11,685 INFO L130 BoogieDeclarations]: Found specification of procedure pf_getgeo [2022-11-03 02:09:11,685 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_getgeo [2022-11-03 02:09:11,685 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2022-11-03 02:09:11,686 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2022-11-03 02:09:11,686 INFO L130 BoogieDeclarations]: Found specification of procedure pi_disconnect [2022-11-03 02:09:11,686 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_disconnect [2022-11-03 02:09:11,686 INFO L130 BoogieDeclarations]: Found specification of procedure status_reg [2022-11-03 02:09:11,687 INFO L138 BoogieDeclarations]: Found implementation of procedure status_reg [2022-11-03 02:09:11,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:09:11,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pf_mutex [2022-11-03 02:09:11,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pf_mutex [2022-11-03 02:09:11,688 INFO L130 BoogieDeclarations]: Found specification of procedure pf_reset [2022-11-03 02:09:11,688 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_reset [2022-11-03 02:09:11,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:09:11,688 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_block [2022-11-03 02:09:11,689 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_block [2022-11-03 02:09:11,689 INFO L130 BoogieDeclarations]: Found specification of procedure pf_wait [2022-11-03 02:09:11,689 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_wait [2022-11-03 02:09:11,689 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2022-11-03 02:09:11,690 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2022-11-03 02:09:11,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:09:11,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:09:11,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pf_mutex [2022-11-03 02:09:11,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pf_mutex [2022-11-03 02:09:11,691 INFO L130 BoogieDeclarations]: Found specification of procedure pf_check_events [2022-11-03 02:09:11,691 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_check_events [2022-11-03 02:09:11,691 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2022-11-03 02:09:11,692 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2022-11-03 02:09:11,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:09:11,692 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:09:11,693 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:09:11,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:09:11,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:09:11,693 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2022-11-03 02:09:11,694 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2022-11-03 02:09:11,694 INFO L130 BoogieDeclarations]: Found specification of procedure pf_req_sense [2022-11-03 02:09:11,694 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_req_sense [2022-11-03 02:09:11,694 INFO L130 BoogieDeclarations]: Found specification of procedure pf_completion [2022-11-03 02:09:11,695 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_completion [2022-11-03 02:09:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:09:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 02:09:11,695 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 02:09:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:09:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:09:11,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:09:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:09:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:09:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure pf_atapi [2022-11-03 02:09:11,697 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_atapi [2022-11-03 02:09:11,698 INFO L130 BoogieDeclarations]: Found specification of procedure pf_command [2022-11-03 02:09:11,698 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_command [2022-11-03 02:09:11,698 INFO L130 BoogieDeclarations]: Found specification of procedure pf_probe [2022-11-03 02:09:11,698 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_probe [2022-11-03 02:09:11,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:09:11,701 INFO L130 BoogieDeclarations]: Found specification of procedure pf_identify [2022-11-03 02:09:11,701 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_identify [2022-11-03 02:09:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure pf_sleep [2022-11-03 02:09:11,702 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_sleep [2022-11-03 02:09:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure pf_mode_sense [2022-11-03 02:09:11,702 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_mode_sense [2022-11-03 02:09:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_block [2022-11-03 02:09:11,703 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_block [2022-11-03 02:09:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:09:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:09:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure pi_init [2022-11-03 02:09:11,705 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_init [2022-11-03 02:09:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_regr [2022-11-03 02:09:11,705 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_regr [2022-11-03 02:09:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure pi_connect [2022-11-03 02:09:11,707 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_connect [2022-11-03 02:09:11,707 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-11-03 02:09:11,708 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-11-03 02:09:11,708 INFO L130 BoogieDeclarations]: Found specification of procedure get_capacity [2022-11-03 02:09:11,708 INFO L138 BoogieDeclarations]: Found implementation of procedure get_capacity [2022-11-03 02:09:11,709 INFO L130 BoogieDeclarations]: Found specification of procedure pf_lock [2022-11-03 02:09:11,709 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_lock [2022-11-03 02:09:11,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:09:11,709 INFO L130 BoogieDeclarations]: Found specification of procedure xl [2022-11-03 02:09:11,710 INFO L138 BoogieDeclarations]: Found implementation of procedure xl [2022-11-03 02:09:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:09:11,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:09:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure xs [2022-11-03 02:09:11,710 INFO L138 BoogieDeclarations]: Found implementation of procedure xs [2022-11-03 02:09:11,711 INFO L130 BoogieDeclarations]: Found specification of procedure pf_ioctl [2022-11-03 02:09:11,711 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_ioctl [2022-11-03 02:09:12,241 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:09:12,246 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:09:19,049 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:09:19,426 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:09:19,426 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 02:09:19,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:09:19 BoogieIcfgContainer [2022-11-03 02:09:19,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:09:19,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:09:19,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:09:19,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:09:19,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:09:09" (1/3) ... [2022-11-03 02:09:19,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ef8dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:09:19, skipping insertion in model container [2022-11-03 02:09:19,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:11" (2/3) ... [2022-11-03 02:09:19,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ef8dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:09:19, skipping insertion in model container [2022-11-03 02:09:19,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:09:19" (3/3) ... [2022-11-03 02:09:19,443 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i [2022-11-03 02:09:19,467 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:09:19,468 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:09:19,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:09:19,563 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;@59ddd723, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:09:19,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:09:19,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 398 states, 249 states have (on average 1.3775100401606426) internal successors, (343), 263 states have internal predecessors, (343), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2022-11-03 02:09:19,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:09:19,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:19,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:19,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:19,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:19,601 INFO L85 PathProgramCache]: Analyzing trace with hash -2095095746, now seen corresponding path program 1 times [2022-11-03 02:09:19,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:19,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237768670] [2022-11-03 02:09:19,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:19,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:20,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:09:20,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:20,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237768670] [2022-11-03 02:09:20,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237768670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:20,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:20,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:09:20,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257170147] [2022-11-03 02:09:20,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:20,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:20,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:20,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:20,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:20,265 INFO L87 Difference]: Start difference. First operand has 398 states, 249 states have (on average 1.3775100401606426) internal successors, (343), 263 states have internal predecessors, (343), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:21,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:21,917 INFO L93 Difference]: Finished difference Result 1087 states and 1585 transitions. [2022-11-03 02:09:21,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:21,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 02:09:21,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:21,943 INFO L225 Difference]: With dead ends: 1087 [2022-11-03 02:09:21,943 INFO L226 Difference]: Without dead ends: 686 [2022-11-03 02:09:21,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:21,957 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 409 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:21,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 1144 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 02:09:21,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-11-03 02:09:22,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 673. [2022-11-03 02:09:22,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 421 states have (on average 1.3562945368171022) internal successors, (571), 434 states have internal predecessors, (571), 187 states have call successors, (187), 65 states have call predecessors, (187), 64 states have return successors, (181), 181 states have call predecessors, (181), 181 states have call successors, (181) [2022-11-03 02:09:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 939 transitions. [2022-11-03 02:09:22,148 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 939 transitions. Word has length 14 [2022-11-03 02:09:22,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:22,151 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 939 transitions. [2022-11-03 02:09:22,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:22,152 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 939 transitions. [2022-11-03 02:09:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 02:09:22,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:22,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:22,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:09:22,155 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:22,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:22,156 INFO L85 PathProgramCache]: Analyzing trace with hash -126955686, now seen corresponding path program 1 times [2022-11-03 02:09:22,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:22,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826991111] [2022-11-03 02:09:22,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:22,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:09:22,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:22,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826991111] [2022-11-03 02:09:22,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826991111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:22,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:22,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:22,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352695645] [2022-11-03 02:09:22,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:22,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:22,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:22,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:22,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:22,482 INFO L87 Difference]: Start difference. First operand 673 states and 939 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:09:24,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:25,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:25,722 INFO L93 Difference]: Finished difference Result 1516 states and 2094 transitions. [2022-11-03 02:09:25,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:25,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-03 02:09:25,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:25,731 INFO L225 Difference]: With dead ends: 1516 [2022-11-03 02:09:25,731 INFO L226 Difference]: Without dead ends: 844 [2022-11-03 02:09:25,735 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 02:09:25,737 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 374 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:25,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 967 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 143 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-11-03 02:09:25,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2022-11-03 02:09:25,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 563. [2022-11-03 02:09:25,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 346 states have (on average 1.3410404624277457) internal successors, (464), 358 states have internal predecessors, (464), 157 states have call successors, (157), 60 states have call predecessors, (157), 59 states have return successors, (151), 151 states have call predecessors, (151), 151 states have call successors, (151) [2022-11-03 02:09:25,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 772 transitions. [2022-11-03 02:09:25,788 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 772 transitions. Word has length 16 [2022-11-03 02:09:25,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:25,789 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 772 transitions. [2022-11-03 02:09:25,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:09:25,790 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 772 transitions. [2022-11-03 02:09:25,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 02:09:25,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:25,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:25,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:09:25,792 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:25,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:25,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1986449798, now seen corresponding path program 1 times [2022-11-03 02:09:25,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:25,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410197972] [2022-11-03 02:09:25,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:25,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:25,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:09:25,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:25,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410197972] [2022-11-03 02:09:25,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410197972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:25,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:25,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:09:25,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158334749] [2022-11-03 02:09:25,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:25,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:25,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:25,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:25,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:25,952 INFO L87 Difference]: Start difference. First operand 563 states and 772 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:26,691 INFO L93 Difference]: Finished difference Result 1116 states and 1530 transitions. [2022-11-03 02:09:26,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:26,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 02:09:26,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:26,696 INFO L225 Difference]: With dead ends: 1116 [2022-11-03 02:09:26,696 INFO L226 Difference]: Without dead ends: 563 [2022-11-03 02:09:26,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:26,700 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 536 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:26,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 476 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:09:26,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-11-03 02:09:26,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2022-11-03 02:09:26,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 346 states have (on average 1.3381502890173411) internal successors, (463), 358 states have internal predecessors, (463), 157 states have call successors, (157), 60 states have call predecessors, (157), 59 states have return successors, (151), 151 states have call predecessors, (151), 151 states have call successors, (151) [2022-11-03 02:09:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 771 transitions. [2022-11-03 02:09:26,750 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 771 transitions. Word has length 15 [2022-11-03 02:09:26,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:26,750 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 771 transitions. [2022-11-03 02:09:26,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:26,751 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 771 transitions. [2022-11-03 02:09:26,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 02:09:26,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:26,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:26,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:09:26,753 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:26,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:26,753 INFO L85 PathProgramCache]: Analyzing trace with hash 445032065, now seen corresponding path program 1 times [2022-11-03 02:09:26,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:26,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528376016] [2022-11-03 02:09:26,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:26,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:09:26,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:26,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528376016] [2022-11-03 02:09:26,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528376016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:26,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:26,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:26,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142014983] [2022-11-03 02:09:26,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:26,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:26,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:26,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:26,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:26,915 INFO L87 Difference]: Start difference. First operand 563 states and 771 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:28,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:28,502 INFO L93 Difference]: Finished difference Result 1122 states and 1537 transitions. [2022-11-03 02:09:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:28,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-03 02:09:28,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:28,507 INFO L225 Difference]: With dead ends: 1122 [2022-11-03 02:09:28,508 INFO L226 Difference]: Without dead ends: 569 [2022-11-03 02:09:28,510 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 02:09:28,511 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 7 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:28,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 949 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-03 02:09:28,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-11-03 02:09:28,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 564. [2022-11-03 02:09:28,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 347 states have (on average 1.3371757925072045) internal successors, (464), 359 states have internal predecessors, (464), 157 states have call successors, (157), 60 states have call predecessors, (157), 59 states have return successors, (151), 151 states have call predecessors, (151), 151 states have call successors, (151) [2022-11-03 02:09:28,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 772 transitions. [2022-11-03 02:09:28,603 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 772 transitions. Word has length 21 [2022-11-03 02:09:28,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:28,604 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 772 transitions. [2022-11-03 02:09:28,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:28,604 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 772 transitions. [2022-11-03 02:09:28,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-03 02:09:28,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:28,606 INFO L195 NwaCegarLoop]: trace histogram [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 02:09:28,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:09:28,607 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:28,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:28,607 INFO L85 PathProgramCache]: Analyzing trace with hash 927879807, now seen corresponding path program 1 times [2022-11-03 02:09:28,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:28,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089988824] [2022-11-03 02:09:28,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:28,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:28,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:09:28,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:28,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089988824] [2022-11-03 02:09:28,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089988824] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:09:28,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886063330] [2022-11-03 02:09:28,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:28,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:28,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:09:28,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:09:28,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:09:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:29,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:09:29,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:09:29,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:09:29,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:09:29,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886063330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:29,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:09:29,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 02:09:29,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161501372] [2022-11-03 02:09:29,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:29,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:29,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:29,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:29,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:29,428 INFO L87 Difference]: Start difference. First operand 564 states and 772 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:30,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:30,465 INFO L93 Difference]: Finished difference Result 1135 states and 1558 transitions. [2022-11-03 02:09:30,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:30,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-03 02:09:30,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:30,471 INFO L225 Difference]: With dead ends: 1135 [2022-11-03 02:09:30,471 INFO L226 Difference]: Without dead ends: 581 [2022-11-03 02:09:30,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 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 02:09:30,475 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 14 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:30,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 961 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 02:09:30,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-11-03 02:09:30,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 566. [2022-11-03 02:09:30,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 349 states have (on average 1.335243553008596) internal successors, (466), 361 states have internal predecessors, (466), 157 states have call successors, (157), 60 states have call predecessors, (157), 59 states have return successors, (151), 151 states have call predecessors, (151), 151 states have call successors, (151) [2022-11-03 02:09:30,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 774 transitions. [2022-11-03 02:09:30,560 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 774 transitions. Word has length 24 [2022-11-03 02:09:30,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:30,561 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 774 transitions. [2022-11-03 02:09:30,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:30,562 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 774 transitions. [2022-11-03 02:09:30,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 02:09:30,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:30,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 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 02:09:30,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:09:30,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:30,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:30,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:30,781 INFO L85 PathProgramCache]: Analyzing trace with hash 12896229, now seen corresponding path program 1 times [2022-11-03 02:09:30,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:30,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882199883] [2022-11-03 02:09:30,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:30,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:09:31,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:31,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882199883] [2022-11-03 02:09:31,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882199883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:09:31,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890134499] [2022-11-03 02:09:31,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:31,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:31,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:09:31,163 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:09:31,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:09:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:31,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:09:31,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:09:31,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:09:31,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:09:31,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890134499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:31,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:09:31,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 02:09:31,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880730754] [2022-11-03 02:09:31,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:31,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:31,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:31,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:31,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:31,653 INFO L87 Difference]: Start difference. First operand 566 states and 774 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:32,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:32,825 INFO L93 Difference]: Finished difference Result 1654 states and 2256 transitions. [2022-11-03 02:09:32,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:32,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-03 02:09:32,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:32,834 INFO L225 Difference]: With dead ends: 1654 [2022-11-03 02:09:32,835 INFO L226 Difference]: Without dead ends: 1098 [2022-11-03 02:09:32,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 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 02:09:32,839 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 513 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:32,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 1035 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 02:09:32,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-11-03 02:09:32,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 782. [2022-11-03 02:09:32,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 478 states have (on average 1.3179916317991631) internal successors, (630), 493 states have internal predecessors, (630), 219 states have call successors, (219), 85 states have call predecessors, (219), 84 states have return successors, (213), 213 states have call predecessors, (213), 213 states have call successors, (213) [2022-11-03 02:09:32,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1062 transitions. [2022-11-03 02:09:32,945 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1062 transitions. Word has length 27 [2022-11-03 02:09:32,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:32,946 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 1062 transitions. [2022-11-03 02:09:32,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:09:32,947 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1062 transitions. [2022-11-03 02:09:32,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 02:09:32,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:32,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 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 02:09:33,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:09:33,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:33,169 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:33,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:33,169 INFO L85 PathProgramCache]: Analyzing trace with hash -2099355542, now seen corresponding path program 1 times [2022-11-03 02:09:33,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:33,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679793720] [2022-11-03 02:09:33,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:33,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:09:33,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:33,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679793720] [2022-11-03 02:09:33,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679793720] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:09:33,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864418957] [2022-11-03 02:09:33,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:33,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:33,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:09:33,396 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:09:33,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:09:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:33,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:09:33,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:09:33,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:09:33,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:09:33,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864418957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:33,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:09:33,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 02:09:33,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316683336] [2022-11-03 02:09:33,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:33,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:33,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:33,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:33,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:33,915 INFO L87 Difference]: Start difference. First operand 782 states and 1062 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:09:35,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:35,182 INFO L93 Difference]: Finished difference Result 1685 states and 2327 transitions. [2022-11-03 02:09:35,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:35,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-03 02:09:35,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:35,190 INFO L225 Difference]: With dead ends: 1685 [2022-11-03 02:09:35,191 INFO L226 Difference]: Without dead ends: 913 [2022-11-03 02:09:35,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 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 02:09:35,196 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 136 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:35,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 987 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 02:09:35,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2022-11-03 02:09:35,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 797. [2022-11-03 02:09:35,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 489 states have (on average 1.3210633946830266) internal successors, (646), 504 states have internal predecessors, (646), 223 states have call successors, (223), 85 states have call predecessors, (223), 84 states have return successors, (217), 217 states have call predecessors, (217), 217 states have call successors, (217) [2022-11-03 02:09:35,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1086 transitions. [2022-11-03 02:09:35,310 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1086 transitions. Word has length 28 [2022-11-03 02:09:35,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:35,310 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1086 transitions. [2022-11-03 02:09:35,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:09:35,311 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1086 transitions. [2022-11-03 02:09:35,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 02:09:35,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:35,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:35,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:09:35,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 02:09:35,529 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:35,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:35,530 INFO L85 PathProgramCache]: Analyzing trace with hash -360006167, now seen corresponding path program 1 times [2022-11-03 02:09:35,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:35,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910792336] [2022-11-03 02:09:35,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:35,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:09:35,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:35,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910792336] [2022-11-03 02:09:35,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910792336] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:09:35,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862614861] [2022-11-03 02:09:35,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:35,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:35,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:09:35,736 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:09:35,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:09:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:36,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:09:36,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:09:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:09:36,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:09:36,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862614861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:36,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:09:36,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-03 02:09:36,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801413471] [2022-11-03 02:09:36,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:36,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:36,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:36,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:36,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:36,336 INFO L87 Difference]: Start difference. First operand 797 states and 1086 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:09:38,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:39,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:39,073 INFO L93 Difference]: Finished difference Result 799 states and 1087 transitions. [2022-11-03 02:09:39,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:39,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2022-11-03 02:09:39,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:39,080 INFO L225 Difference]: With dead ends: 799 [2022-11-03 02:09:39,081 INFO L226 Difference]: Without dead ends: 796 [2022-11-03 02:09:39,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 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 02:09:39,083 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 508 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:39,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 474 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-11-03 02:09:39,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-11-03 02:09:39,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 796. [2022-11-03 02:09:39,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 489 states have (on average 1.3190184049079754) internal successors, (645), 503 states have internal predecessors, (645), 222 states have call successors, (222), 85 states have call predecessors, (222), 84 states have return successors, (217), 217 states have call predecessors, (217), 217 states have call successors, (217) [2022-11-03 02:09:39,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1084 transitions. [2022-11-03 02:09:39,182 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1084 transitions. Word has length 34 [2022-11-03 02:09:39,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:39,182 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 1084 transitions. [2022-11-03 02:09:39,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:09:39,183 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1084 transitions. [2022-11-03 02:09:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 02:09:39,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:39,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:39,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:09:39,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:39,385 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:39,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:39,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1724409399, now seen corresponding path program 1 times [2022-11-03 02:09:39,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:39,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379626961] [2022-11-03 02:09:39,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:39,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:39,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:09:39,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:39,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379626961] [2022-11-03 02:09:39,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379626961] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:09:39,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099428268] [2022-11-03 02:09:39,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:39,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:39,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:09:39,579 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:09:39,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:09:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:40,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:09:40,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:09:40,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:09:40,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:09:40,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099428268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:40,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:09:40,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-03 02:09:40,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493901331] [2022-11-03 02:09:40,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:40,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:40,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:40,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:40,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:40,135 INFO L87 Difference]: Start difference. First operand 796 states and 1084 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:09:40,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:40,702 INFO L93 Difference]: Finished difference Result 798 states and 1085 transitions. [2022-11-03 02:09:40,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:40,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2022-11-03 02:09:40,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:40,709 INFO L225 Difference]: With dead ends: 798 [2022-11-03 02:09:40,710 INFO L226 Difference]: Without dead ends: 795 [2022-11-03 02:09:40,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 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 02:09:40,711 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 508 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:40,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 472 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:09:40,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-11-03 02:09:40,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 795. [2022-11-03 02:09:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 489 states have (on average 1.3169734151329244) internal successors, (644), 502 states have internal predecessors, (644), 221 states have call successors, (221), 85 states have call predecessors, (221), 84 states have return successors, (217), 217 states have call predecessors, (217), 217 states have call successors, (217) [2022-11-03 02:09:40,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1082 transitions. [2022-11-03 02:09:40,855 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1082 transitions. Word has length 35 [2022-11-03 02:09:40,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:40,856 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1082 transitions. [2022-11-03 02:09:40,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:09:40,857 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1082 transitions. [2022-11-03 02:09:40,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 02:09:40,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:40,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:40,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-03 02:09:41,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:41,060 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:41,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:41,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1916787372, now seen corresponding path program 1 times [2022-11-03 02:09:41,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:41,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989419058] [2022-11-03 02:09:41,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:41,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:41,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:09:41,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:41,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989419058] [2022-11-03 02:09:41,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989419058] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:09:41,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027612462] [2022-11-03 02:09:41,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:41,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:41,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:09:41,273 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:09:41,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:09:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:41,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:09:41,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:09:41,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:09:41,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:09:41,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027612462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:41,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:09:41,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-03 02:09:41,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653896507] [2022-11-03 02:09:41,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:41,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:41,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:41,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:41,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:41,842 INFO L87 Difference]: Start difference. First operand 795 states and 1082 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:09:42,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:42,753 INFO L93 Difference]: Finished difference Result 797 states and 1083 transitions. [2022-11-03 02:09:42,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:42,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-11-03 02:09:42,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:42,761 INFO L225 Difference]: With dead ends: 797 [2022-11-03 02:09:42,761 INFO L226 Difference]: Without dead ends: 794 [2022-11-03 02:09:42,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 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 02:09:42,763 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 505 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:42,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 470 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:09:42,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-11-03 02:09:42,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 794. [2022-11-03 02:09:42,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 489 states have (on average 1.3149284253578732) internal successors, (643), 501 states have internal predecessors, (643), 220 states have call successors, (220), 85 states have call predecessors, (220), 84 states have return successors, (217), 217 states have call predecessors, (217), 217 states have call successors, (217) [2022-11-03 02:09:42,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1080 transitions. [2022-11-03 02:09:42,855 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1080 transitions. Word has length 36 [2022-11-03 02:09:42,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:42,858 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 1080 transitions. [2022-11-03 02:09:42,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:09:42,858 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1080 transitions. [2022-11-03 02:09:42,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-03 02:09:42,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:42,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:42,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:09:43,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:43,085 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:43,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:43,085 INFO L85 PathProgramCache]: Analyzing trace with hash -709425190, now seen corresponding path program 1 times [2022-11-03 02:09:43,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:43,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214235576] [2022-11-03 02:09:43,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:43,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:09:43,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:43,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214235576] [2022-11-03 02:09:43,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214235576] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:09:43,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248563429] [2022-11-03 02:09:43,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:43,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:43,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:09:43,293 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:09:43,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:09:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:43,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:09:43,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:09:43,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:09:43,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:09:43,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248563429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:43,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:09:43,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-03 02:09:43,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575812314] [2022-11-03 02:09:43,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:43,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:43,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:43,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:43,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:43,836 INFO L87 Difference]: Start difference. First operand 794 states and 1080 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:09:44,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:44,840 INFO L93 Difference]: Finished difference Result 798 states and 1082 transitions. [2022-11-03 02:09:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:44,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2022-11-03 02:09:44,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:44,847 INFO L225 Difference]: With dead ends: 798 [2022-11-03 02:09:44,847 INFO L226 Difference]: Without dead ends: 774 [2022-11-03 02:09:44,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 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 02:09:44,849 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 448 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:44,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 815 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:09:44,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2022-11-03 02:09:44,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2022-11-03 02:09:44,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 476 states have (on average 1.3109243697478992) internal successors, (624), 486 states have internal predecessors, (624), 215 states have call successors, (215), 83 states have call predecessors, (215), 82 states have return successors, (214), 214 states have call predecessors, (214), 214 states have call successors, (214) [2022-11-03 02:09:44,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1053 transitions. [2022-11-03 02:09:44,931 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1053 transitions. Word has length 37 [2022-11-03 02:09:44,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:44,931 INFO L495 AbstractCegarLoop]: Abstraction has 774 states and 1053 transitions. [2022-11-03 02:09:44,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:09:44,932 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1053 transitions. [2022-11-03 02:09:44,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 02:09:44,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:44,935 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:44,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:09:45,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:45,149 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:45,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:45,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1161930998, now seen corresponding path program 1 times [2022-11-03 02:09:45,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:45,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994200013] [2022-11-03 02:09:45,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:45,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:09:45,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:45,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994200013] [2022-11-03 02:09:45,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994200013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:09:45,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540932117] [2022-11-03 02:09:45,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:45,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:45,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:09:45,382 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:09:45,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccd6f89-148e-4398-8eec-bb8607a8b4c9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:09:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:45,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:09:45,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:09:45,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:09:45,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:09:45,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:09:45,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540932117] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:09:45,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1037791247] [2022-11-03 02:09:46,003 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2022-11-03 02:09:46,003 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:09:46,008 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:09:46,015 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:09:46,016 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:09:47,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 438 treesize of output 374 [2022-11-03 02:09:47,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 402 treesize of output 338 [2022-11-03 02:09:48,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:48,442 INFO L244 Elim1Store]: Index analysis took 123 ms [2022-11-03 02:09:48,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 253 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 0 case distinctions, treesize of input 1114 treesize of output 952 [2022-11-03 02:09:57,428 INFO L244 Elim1Store]: Index analysis took 172 ms [2022-11-03 02:10:02,799 WARN L234 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 675 DAG size of output: 369 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:10:02,806 INFO L356 Elim1Store]: treesize reduction 1098, result has 33.4 percent of original size [2022-11-03 02:10:02,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 63 select indices, 63 select index equivalence classes, 1892 disjoint index pairs (out of 1953 index pairs), introduced 63 new quantified variables, introduced 122 case distinctions, treesize of input 322 treesize of output 749 [2022-11-03 02:10:04,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 61 select indices, 61 select index equivalence classes, 1892 disjoint index pairs (out of 1830 index pairs), introduced 61 new quantified variables, introduced 0 case distinctions, treesize of input 312 treesize of output 494 [2022-11-03 02:10:14,459 INFO L244 Elim1Store]: Index analysis took 160 ms [2022-11-03 02:10:26,606 WARN L234 SmtUtils]: Spent 12.13s on a formula simplification. DAG size of input: 936 DAG size of output: 379 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:10:26,609 INFO L356 Elim1Store]: treesize reduction 1604, result has 26.1 percent of original size [2022-11-03 02:10:26,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 64 select indices, 64 select index equivalence classes, 1892 disjoint index pairs (out of 2016 index pairs), introduced 64 new quantified variables, introduced 186 case distinctions, treesize of input 6362 treesize of output 6680 [2022-11-03 02:10:28,454 INFO L244 Elim1Store]: Index analysis took 204 ms [2022-11-03 02:10:29,227 INFO L356 Elim1Store]: treesize reduction 499, result has 1.8 percent of original size [2022-11-03 02:10:29,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 62 select indices, 62 select index equivalence classes, 1892 disjoint index pairs (out of 1891 index pairs), introduced 62 new quantified variables, introduced 62 case distinctions, treesize of input 6355 treesize of output 6422 [2022-11-03 02:11:05,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:11:05,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:11:26,111 INFO L244 Elim1Store]: Index analysis took 204 ms [2022-11-03 02:11:29,851 INFO L356 Elim1Store]: treesize reduction 610, result has 47.4 percent of original size [2022-11-03 02:11:29,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 61 select indices, 61 select index equivalence classes, 1831 disjoint index pairs (out of 1830 index pairs), introduced 61 new quantified variables, introduced 61 case distinctions, treesize of input 312 treesize of output 738 [2022-11-03 02:11:30,965 INFO L244 Elim1Store]: Index analysis took 251 ms [2022-11-03 02:11:36,378 WARN L234 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 675 DAG size of output: 369 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:11:36,380 INFO L356 Elim1Store]: treesize reduction 1098, result has 33.4 percent of original size [2022-11-03 02:11:36,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 63 select indices, 63 select index equivalence classes, 1892 disjoint index pairs (out of 1953 index pairs), introduced 63 new quantified variables, introduced 122 case distinctions, treesize of input 322 treesize of output 749 [2022-11-03 02:11:46,728 INFO L244 Elim1Store]: Index analysis took 120 ms [2022-11-03 02:12:00,906 WARN L234 SmtUtils]: Spent 14.16s on a formula simplification. DAG size of input: 936 DAG size of output: 379 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:12:00,908 INFO L356 Elim1Store]: treesize reduction 1604, result has 26.1 percent of original size [2022-11-03 02:12:00,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 64 select indices, 64 select index equivalence classes, 1892 disjoint index pairs (out of 2016 index pairs), introduced 64 new quantified variables, introduced 186 case distinctions, treesize of input 6362 treesize of output 6680 [2022-11-03 02:12:02,588 INFO L244 Elim1Store]: Index analysis took 171 ms [2022-11-03 02:12:03,283 INFO L356 Elim1Store]: treesize reduction 499, result has 1.8 percent of original size [2022-11-03 02:12:03,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 62 select indices, 62 select index equivalence classes, 1892 disjoint index pairs (out of 1891 index pairs), introduced 62 new quantified variables, introduced 62 case distinctions, treesize of input 6355 treesize of output 6422 [2022-11-03 02:12:37,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:12:37,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:12:38,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:12:38,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:12:54,273 INFO L197 IcfgInterpreter]: Interpreting procedure put_disk with input of size 178 for LOIs [2022-11-03 02:12:54,291 INFO L197 IcfgInterpreter]: Interpreting procedure pi_init with input of size 224 for LOIs [2022-11-03 02:12:54,328 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:13:08,522 WARN L234 SmtUtils]: Spent 14.07s on a formula simplification that was a NOOP. DAG size: 1238 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:13:23,297 WARN L234 SmtUtils]: Spent 14.60s on a formula simplification that was a NOOP. DAG size: 1251 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:13:38,334 WARN L234 SmtUtils]: Spent 14.79s on a formula simplification that was a NOOP. DAG size: 1253 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:13:52,930 WARN L234 SmtUtils]: Spent 14.31s on a formula simplification that was a NOOP. DAG size: 1241 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:14:07,804 WARN L234 SmtUtils]: Spent 14.55s on a formula simplification that was a NOOP. DAG size: 1254 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:14:21,739 WARN L234 SmtUtils]: Spent 13.58s on a formula simplification that was a NOOP. DAG size: 1256 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:14:35,725 WARN L234 SmtUtils]: Spent 13.59s on a formula simplification that was a NOOP. DAG size: 1244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:15:30,801 WARN L234 SmtUtils]: Spent 13.56s on a formula simplification that was a NOOP. DAG size: 1241 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:15:30,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1037791247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:15:30,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:15:30,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2022-11-03 02:15:30,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946161780] [2022-11-03 02:15:30,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:15:30,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 02:15:30,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:15:30,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 02:15:30,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=914, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 02:15:30,811 INFO L87 Difference]: Start difference. First operand 774 states and 1053 transitions. Second operand has 28 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 02:16:05,683 WARN L234 SmtUtils]: Spent 32.95s on a formula simplification. DAG size of input: 1330 DAG size of output: 1269 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:16:34,303 WARN L234 SmtUtils]: Spent 27.96s on a formula simplification. DAG size of input: 1268 DAG size of output: 1265 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:17:02,902 WARN L234 SmtUtils]: Spent 28.25s on a formula simplification. DAG size of input: 1271 DAG size of output: 1268 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:17:38,702 WARN L234 SmtUtils]: Spent 31.00s on a formula simplification. DAG size of input: 1328 DAG size of output: 1273 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:18:06,640 WARN L234 SmtUtils]: Spent 27.56s on a formula simplification. DAG size of input: 1268 DAG size of output: 1267 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:18:35,856 WARN L234 SmtUtils]: Spent 28.83s on a formula simplification. DAG size of input: 1281 DAG size of output: 1280 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:06,549 WARN L234 SmtUtils]: Spent 30.35s on a formula simplification. DAG size of input: 1315 DAG size of output: 1314 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:37,575 WARN L234 SmtUtils]: Spent 30.56s on a formula simplification. DAG size of input: 1296 DAG size of output: 1281 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:08,185 WARN L234 SmtUtils]: Spent 30.01s on a formula simplification. DAG size of input: 1276 DAG size of output: 1268 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:38,658 WARN L234 SmtUtils]: Spent 29.95s on a formula simplification. DAG size of input: 1272 DAG size of output: 1264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:15,061 WARN L234 SmtUtils]: Spent 35.75s on a formula simplification. DAG size of input: 1364 DAG size of output: 1282 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:51,867 WARN L234 SmtUtils]: Spent 36.19s on a formula simplification. DAG size of input: 1375 DAG size of output: 1293 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)