./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 27a3a7bacd5bfaa71ec936fdb60b09adb3a573df62752fe262468d392ed108c3 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:49:33,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:49:33,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:49:33,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:49:33,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:49:33,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:49:33,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:49:33,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:49:33,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:49:33,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:49:33,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:49:33,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:49:33,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:49:33,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:49:33,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:49:33,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:49:33,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:49:33,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:49:33,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:49:33,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:49:33,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:49:33,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:49:33,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:49:33,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:49:33,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:49:33,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:49:33,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:49:33,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:49:33,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:49:33,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:49:33,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:49:33,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:49:33,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:49:33,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:49:33,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:49:33,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:49:33,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:49:33,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:49:33,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:49:33,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:49:33,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:49:33,118 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 19:49:33,136 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:49:33,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:49:33,136 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:49:33,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:49:33,137 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:49:33,137 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:49:33,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:49:33,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:49:33,138 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:49:33,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:49:33,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:49:33,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:49:33,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:49:33,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:49:33,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:49:33,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:49:33,139 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:49:33,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:49:33,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:49:33,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:49:33,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:49:33,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:49:33,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:49:33,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:49:33,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:49:33,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:49:33,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:49:33,140 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:49:33,140 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:49:33,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:49:33,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:49:33,141 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_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27a3a7bacd5bfaa71ec936fdb60b09adb3a573df62752fe262468d392ed108c3 [2021-12-06 19:49:33,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:49:33,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:49:33,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:49:33,332 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:49:33,333 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:49:33,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2021-12-06 19:49:33,378 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/data/f314841f2/bf0674e2af5345a28fcedc3cae0b9e07/FLAGd6df2247c [2021-12-06 19:49:34,007 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:49:34,007 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2021-12-06 19:49:34,046 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/data/f314841f2/bf0674e2af5345a28fcedc3cae0b9e07/FLAGd6df2247c [2021-12-06 19:49:34,429 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/data/f314841f2/bf0674e2af5345a28fcedc3cae0b9e07 [2021-12-06 19:49:34,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:49:34,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:49:34,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:49:34,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:49:34,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:49:34,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:49:34" (1/1) ... [2021-12-06 19:49:34,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2145c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:34, skipping insertion in model container [2021-12-06 19:49:34,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:49:34" (1/1) ... [2021-12-06 19:49:34,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:49:34,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:49:36,034 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_2dec09b6-2211-412d-9226-1fcac64da090/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i[276778,276791] [2021-12-06 19:49:36,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:49:36,170 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:49:36,410 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_2dec09b6-2211-412d-9226-1fcac64da090/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i[276778,276791] [2021-12-06 19:49:36,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:49:36,490 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:49:36,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:36 WrapperNode [2021-12-06 19:49:36,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:49:36,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:49:36,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:49:36,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:49:36,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:36" (1/1) ... [2021-12-06 19:49:36,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:36" (1/1) ... [2021-12-06 19:49:36,702 INFO L137 Inliner]: procedures = 341, calls = 1845, calls flagged for inlining = 158, calls inlined = 154, statements flattened = 4880 [2021-12-06 19:49:36,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:49:36,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:49:36,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:49:36,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:49:36,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:36" (1/1) ... [2021-12-06 19:49:36,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:36" (1/1) ... [2021-12-06 19:49:36,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:36" (1/1) ... [2021-12-06 19:49:36,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:36" (1/1) ... [2021-12-06 19:49:36,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:36" (1/1) ... [2021-12-06 19:49:36,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:36" (1/1) ... [2021-12-06 19:49:36,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:36" (1/1) ... [2021-12-06 19:49:36,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:49:36,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:49:36,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:49:36,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:49:36,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:36" (1/1) ... [2021-12-06 19:49:36,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:49:36,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:49:36,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:49:36,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:49:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure queue_iso [2021-12-06 19:49:36,947 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_iso [2021-12-06 19:49:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-06 19:49:36,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-06 19:49:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_channel [2021-12-06 19:49:36,947 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_channel [2021-12-06 19:49:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_dvb_register [2021-12-06 19:49:36,947 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_dvb_register [2021-12-06 19:49:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_establish_pp_connection [2021-12-06 19:49:36,947 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_establish_pp_connection [2021-12-06 19:49:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-06 19:49:36,948 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-06 19:49:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-12-06 19:49:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure node_req [2021-12-06 19:49:36,948 INFO L138 BoogieDeclarations]: Found implementation of procedure node_req [2021-12-06 19:49:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 19:49:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 19:49:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_lock [2021-12-06 19:49:36,948 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_lock [2021-12-06 19:49:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2021-12-06 19:49:36,948 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2021-12-06 19:49:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-12-06 19:49:36,948 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-12-06 19:49:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 19:49:36,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 19:49:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_read [2021-12-06 19:49:36,949 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_read [2021-12-06 19:49:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_demux_mutex_of_firedtv [2021-12-06 19:49:36,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_demux_mutex_of_firedtv [2021-12-06 19:49:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-06 19:49:36,949 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-06 19:49:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 19:49:36,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 19:49:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure pad_operands [2021-12-06 19:49:36,949 INFO L138 BoogieDeclarations]: Found implementation of procedure pad_operands [2021-12-06 19:49:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure avc_tuner_set_pids [2021-12-06 19:49:36,949 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_tuner_set_pids [2021-12-06 19:49:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_ca_io_poll [2021-12-06 19:49:36,949 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_ca_io_poll [2021-12-06 19:49:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2021-12-06 19:49:36,950 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2021-12-06 19:49:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_release [2021-12-06 19:49:36,950 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_release [2021-12-06 19:49:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure clear_operands [2021-12-06 19:49:36,950 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_operands [2021-12-06 19:49:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-06 19:49:36,950 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-06 19:49:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_open [2021-12-06 19:49:36,950 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_open [2021-12-06 19:49:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 19:49:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-06 19:49:36,950 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-06 19:49:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure avc_write [2021-12-06 19:49:36,950 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_write [2021-12-06 19:49:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure get_opcr [2021-12-06 19:49:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure get_opcr [2021-12-06 19:49:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 19:49:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-12-06 19:49:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-12-06 19:49:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure collect_channels [2021-12-06 19:49:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure collect_channels [2021-12-06 19:49:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:49:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 19:49:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure fw_iso_context_destroy [2021-12-06 19:49:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_iso_context_destroy [2021-12-06 19:49:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_unregister_rc [2021-12-06 19:49:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_unregister_rc [2021-12-06 19:49:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure avc_tuner_status [2021-12-06 19:49:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_tuner_status [2021-12-06 19:49:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-06 19:49:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-06 19:49:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-06 19:49:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-06 19:49:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-06 19:49:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-06 19:49:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-06 19:49:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-06 19:49:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-12-06 19:49:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-12-06 19:49:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_avc_mutex_of_firedtv [2021-12-06 19:49:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_avc_mutex_of_firedtv [2021-12-06 19:49:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 19:49:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-06 19:49:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-06 19:49:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure node_remove [2021-12-06 19:49:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure node_remove [2021-12-06 19:49:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 19:49:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_dvb_unregister [2021-12-06 19:49:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_dvb_unregister [2021-12-06 19:49:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure add_pid_filter [2021-12-06 19:49:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure add_pid_filter [2021-12-06 19:49:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 19:49:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure is_register_rc [2021-12-06 19:49:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure is_register_rc [2021-12-06 19:49:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure dealloc_channel [2021-12-06 19:49:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure dealloc_channel [2021-12-06 19:49:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 19:49:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 19:49:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-06 19:49:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-06 19:49:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2021-12-06 19:49:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2021-12-06 19:49:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 19:49:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_avc_mutex_of_firedtv [2021-12-06 19:49:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_avc_mutex_of_firedtv [2021-12-06 19:49:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure debug_fcp [2021-12-06 19:49:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_fcp [2021-12-06 19:49:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-12-06 19:49:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-12-06 19:49:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-06 19:49:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-06 19:49:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 19:49:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 19:49:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_net_release [2021-12-06 19:49:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_net_release [2021-12-06 19:49:36,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 19:49:36,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:49:36,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 19:49:36,955 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-06 19:49:36,955 INFO L130 BoogieDeclarations]: Found specification of procedure set_opcr [2021-12-06 19:49:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure set_opcr [2021-12-06 19:49:36,955 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-06 19:49:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-06 19:49:36,955 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-06 19:49:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-06 19:49:36,955 INFO L130 BoogieDeclarations]: Found specification of procedure fw_iso_buffer_destroy [2021-12-06 19:49:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_iso_buffer_destroy [2021-12-06 19:49:36,955 INFO L130 BoogieDeclarations]: Found specification of procedure node_probe [2021-12-06 19:49:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure node_probe [2021-12-06 19:49:36,956 INFO L130 BoogieDeclarations]: Found specification of procedure get_ca_object_pos [2021-12-06 19:49:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ca_object_pos [2021-12-06 19:49:36,956 INFO L130 BoogieDeclarations]: Found specification of procedure node_update [2021-12-06 19:49:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure node_update [2021-12-06 19:49:36,956 INFO L130 BoogieDeclarations]: Found specification of procedure avc_register_remote_control [2021-12-06 19:49:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_register_remote_control [2021-12-06 19:49:36,956 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2021-12-06 19:49:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2021-12-06 19:49:36,956 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 19:49:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 19:49:36,956 INFO L130 BoogieDeclarations]: Found specification of procedure device_of [2021-12-06 19:49:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure device_of [2021-12-06 19:49:36,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demux_mutex_of_firedtv [2021-12-06 19:49:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demux_mutex_of_firedtv [2021-12-06 19:49:36,956 INFO L130 BoogieDeclarations]: Found specification of procedure fw_core_remove_address_handler [2021-12-06 19:49:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_core_remove_address_handler [2021-12-06 19:49:36,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:49:36,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:49:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:49:37,405 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:49:37,407 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:49:47,501 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:49:47,516 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:49:47,516 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 19:49:47,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:49:47 BoogieIcfgContainer [2021-12-06 19:49:47,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:49:47,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:49:47,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:49:47,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:49:47,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:49:34" (1/3) ... [2021-12-06 19:49:47,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7feb1de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:49:47, skipping insertion in model container [2021-12-06 19:49:47,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:36" (2/3) ... [2021-12-06 19:49:47,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7feb1de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:49:47, skipping insertion in model container [2021-12-06 19:49:47,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:49:47" (3/3) ... [2021-12-06 19:49:47,524 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2021-12-06 19:49:47,528 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:49:47,528 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:49:47,569 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:49:47,574 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:49:47,574 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:49:47,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 1329 states, 1019 states have (on average 1.3886162904808637) internal successors, (1415), 1042 states have internal predecessors, (1415), 243 states have call successors, (243), 65 states have call predecessors, (243), 65 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) [2021-12-06 19:49:47,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 19:49:47,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:47,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:47,618 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:47,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:47,622 INFO L85 PathProgramCache]: Analyzing trace with hash -818407598, now seen corresponding path program 1 times [2021-12-06 19:49:47,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:47,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153173934] [2021-12-06 19:49:47,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:47,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:49:47,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:47,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153173934] [2021-12-06 19:49:47,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153173934] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:49:47,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:49:47,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:49:47,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379413149] [2021-12-06 19:49:47,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:49:47,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:49:47,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:47,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:49:47,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:49:47,989 INFO L87 Difference]: Start difference. First operand has 1329 states, 1019 states have (on average 1.3886162904808637) internal successors, (1415), 1042 states have internal predecessors, (1415), 243 states have call successors, (243), 65 states have call predecessors, (243), 65 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-12-06 19:49:48,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:48,197 INFO L93 Difference]: Finished difference Result 3807 states and 5554 transitions. [2021-12-06 19:49:48,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:49:48,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 17 [2021-12-06 19:49:48,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:48,224 INFO L225 Difference]: With dead ends: 3807 [2021-12-06 19:49:48,224 INFO L226 Difference]: Without dead ends: 2471 [2021-12-06 19:49:48,236 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:49:48,239 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 1619 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 4064 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:48,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1619 Valid, 4064 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:49:48,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2021-12-06 19:49:48,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2453. [2021-12-06 19:49:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 1894 states have (on average 1.3875395987328405) internal successors, (2628), 1929 states have internal predecessors, (2628), 430 states have call successors, (430), 129 states have call predecessors, (430), 128 states have return successors, (421), 420 states have call predecessors, (421), 421 states have call successors, (421) [2021-12-06 19:49:48,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 3479 transitions. [2021-12-06 19:49:48,424 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 3479 transitions. Word has length 17 [2021-12-06 19:49:48,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:48,424 INFO L470 AbstractCegarLoop]: Abstraction has 2453 states and 3479 transitions. [2021-12-06 19:49:48,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-12-06 19:49:48,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 3479 transitions. [2021-12-06 19:49:48,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 19:49:48,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:48,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:48,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:49:48,427 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:48,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:48,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1284284555, now seen corresponding path program 1 times [2021-12-06 19:49:48,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:48,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231810330] [2021-12-06 19:49:48,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:48,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:49:48,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:48,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231810330] [2021-12-06 19:49:48,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231810330] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:49:48,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:49:48,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:49:48,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861148331] [2021-12-06 19:49:48,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:49:48,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:49:48,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:48,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:49:48,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:49:48,540 INFO L87 Difference]: Start difference. First operand 2453 states and 3479 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-12-06 19:49:48,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:48,638 INFO L93 Difference]: Finished difference Result 2612 states and 3691 transitions. [2021-12-06 19:49:48,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:49:48,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 19 [2021-12-06 19:49:48,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:48,652 INFO L225 Difference]: With dead ends: 2612 [2021-12-06 19:49:48,652 INFO L226 Difference]: Without dead ends: 2608 [2021-12-06 19:49:48,654 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:49:48,655 INFO L933 BasicCegarLoop]: 1886 mSDtfsCounter, 1266 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:48,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1266 Valid, 2587 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:49:48,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2021-12-06 19:49:48,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 2606. [2021-12-06 19:49:48,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2606 states, 2032 states have (on average 1.391240157480315) internal successors, (2827), 2067 states have internal predecessors, (2827), 432 states have call successors, (432), 142 states have call predecessors, (432), 141 states have return successors, (425), 424 states have call predecessors, (425), 425 states have call successors, (425) [2021-12-06 19:49:48,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 3684 transitions. [2021-12-06 19:49:48,747 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 3684 transitions. Word has length 19 [2021-12-06 19:49:48,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:48,747 INFO L470 AbstractCegarLoop]: Abstraction has 2606 states and 3684 transitions. [2021-12-06 19:49:48,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-12-06 19:49:48,748 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 3684 transitions. [2021-12-06 19:49:48,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 19:49:48,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:48,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:48,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:49:48,750 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:48,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:48,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1157630563, now seen corresponding path program 1 times [2021-12-06 19:49:48,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:48,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934382813] [2021-12-06 19:49:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:48,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:49:48,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:48,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934382813] [2021-12-06 19:49:48,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934382813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:49:48,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:49:48,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:49:48,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768084600] [2021-12-06 19:49:48,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:49:48,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:49:48,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:48,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:49:48,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:49:48,878 INFO L87 Difference]: Start difference. First operand 2606 states and 3684 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-12-06 19:49:48,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:48,970 INFO L93 Difference]: Finished difference Result 2608 states and 3685 transitions. [2021-12-06 19:49:48,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:49:48,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 20 [2021-12-06 19:49:48,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:48,984 INFO L225 Difference]: With dead ends: 2608 [2021-12-06 19:49:48,984 INFO L226 Difference]: Without dead ends: 2605 [2021-12-06 19:49:48,985 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:49:48,986 INFO L933 BasicCegarLoop]: 1875 mSDtfsCounter, 1859 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:48,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1859 Valid, 1875 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:49:48,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2021-12-06 19:49:49,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2605. [2021-12-06 19:49:49,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 2032 states have (on average 1.390748031496063) internal successors, (2826), 2066 states have internal predecessors, (2826), 431 states have call successors, (431), 142 states have call predecessors, (431), 141 states have return successors, (425), 424 states have call predecessors, (425), 425 states have call successors, (425) [2021-12-06 19:49:49,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 3682 transitions. [2021-12-06 19:49:49,082 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 3682 transitions. Word has length 20 [2021-12-06 19:49:49,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:49,082 INFO L470 AbstractCegarLoop]: Abstraction has 2605 states and 3682 transitions. [2021-12-06 19:49:49,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-12-06 19:49:49,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 3682 transitions. [2021-12-06 19:49:49,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 19:49:49,084 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:49,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:49,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:49:49,084 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:49,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:49,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1526328974, now seen corresponding path program 1 times [2021-12-06 19:49:49,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:49,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312782376] [2021-12-06 19:49:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:49,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:49,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:49:49,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:49,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312782376] [2021-12-06 19:49:49,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312782376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:49:49,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:49:49,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:49:49,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286011198] [2021-12-06 19:49:49,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:49:49,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:49:49,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:49,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:49:49,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:49:49,179 INFO L87 Difference]: Start difference. First operand 2605 states and 3682 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) [2021-12-06 19:49:49,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:49,392 INFO L93 Difference]: Finished difference Result 7785 states and 11083 transitions. [2021-12-06 19:49:49,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:49:49,393 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 [2021-12-06 19:49:49,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:49,422 INFO L225 Difference]: With dead ends: 7785 [2021-12-06 19:49:49,422 INFO L226 Difference]: Without dead ends: 5183 [2021-12-06 19:49:49,433 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:49:49,434 INFO L933 BasicCegarLoop]: 2140 mSDtfsCounter, 1861 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1861 SdHoareTripleChecker+Valid, 3999 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:49,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1861 Valid, 3999 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:49:49,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5183 states. [2021-12-06 19:49:49,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5183 to 5171. [2021-12-06 19:49:49,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 4040 states have (on average 1.391089108910891) internal successors, (5620), 4107 states have internal predecessors, (5620), 850 states have call successors, (850), 282 states have call predecessors, (850), 280 states have return successors, (882), 837 states have call predecessors, (882), 842 states have call successors, (882) [2021-12-06 19:49:49,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 7352 transitions. [2021-12-06 19:49:49,637 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 7352 transitions. Word has length 21 [2021-12-06 19:49:49,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:49,637 INFO L470 AbstractCegarLoop]: Abstraction has 5171 states and 7352 transitions. [2021-12-06 19:49:49,637 INFO L471 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) [2021-12-06 19:49:49,637 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 7352 transitions. [2021-12-06 19:49:49,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 19:49:49,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:49,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:49,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:49:49,639 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:49,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:49,639 INFO L85 PathProgramCache]: Analyzing trace with hash 71082694, now seen corresponding path program 1 times [2021-12-06 19:49:49,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:49,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603013430] [2021-12-06 19:49:49,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:49,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:49:49,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:49,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603013430] [2021-12-06 19:49:49,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603013430] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:49:49,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:49:49,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:49:49,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571104403] [2021-12-06 19:49:49,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:49:49,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:49:49,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:49,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:49:49,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:49:49,726 INFO L87 Difference]: Start difference. First operand 5171 states and 7352 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-12-06 19:49:49,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:49,880 INFO L93 Difference]: Finished difference Result 5173 states and 7353 transitions. [2021-12-06 19:49:49,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:49:49,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 22 [2021-12-06 19:49:49,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:49,905 INFO L225 Difference]: With dead ends: 5173 [2021-12-06 19:49:49,906 INFO L226 Difference]: Without dead ends: 5170 [2021-12-06 19:49:49,908 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:49:49,909 INFO L933 BasicCegarLoop]: 1873 mSDtfsCounter, 1855 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:49,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1855 Valid, 1873 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:49:49,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5170 states. [2021-12-06 19:49:50,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5170 to 5170. [2021-12-06 19:49:50,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5170 states, 4040 states have (on average 1.3908415841584159) internal successors, (5619), 4106 states have internal predecessors, (5619), 849 states have call successors, (849), 282 states have call predecessors, (849), 280 states have return successors, (882), 837 states have call predecessors, (882), 842 states have call successors, (882) [2021-12-06 19:49:50,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5170 states to 5170 states and 7350 transitions. [2021-12-06 19:49:50,123 INFO L78 Accepts]: Start accepts. Automaton has 5170 states and 7350 transitions. Word has length 22 [2021-12-06 19:49:50,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:50,124 INFO L470 AbstractCegarLoop]: Abstraction has 5170 states and 7350 transitions. [2021-12-06 19:49:50,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-12-06 19:49:50,124 INFO L276 IsEmpty]: Start isEmpty. Operand 5170 states and 7350 transitions. [2021-12-06 19:49:50,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 19:49:50,125 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:50,125 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:49:50,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:49:50,125 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:50,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:50,126 INFO L85 PathProgramCache]: Analyzing trace with hash -2091874159, now seen corresponding path program 1 times [2021-12-06 19:49:50,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:50,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818436874] [2021-12-06 19:49:50,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:50,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:49:50,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:50,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818436874] [2021-12-06 19:49:50,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818436874] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:49:50,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:49:50,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:49:50,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11347063] [2021-12-06 19:49:50,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:49:50,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:49:50,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:50,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:49:50,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:49:50,217 INFO L87 Difference]: Start difference. First operand 5170 states and 7350 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-12-06 19:49:50,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:50,367 INFO L93 Difference]: Finished difference Result 5172 states and 7351 transitions. [2021-12-06 19:49:50,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:49:50,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 23 [2021-12-06 19:49:50,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:50,393 INFO L225 Difference]: With dead ends: 5172 [2021-12-06 19:49:50,393 INFO L226 Difference]: Without dead ends: 5158 [2021-12-06 19:49:50,395 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:49:50,395 INFO L933 BasicCegarLoop]: 1872 mSDtfsCounter, 1852 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:50,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1852 Valid, 1872 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:49:50,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5158 states. [2021-12-06 19:49:50,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5158 to 5158. [2021-12-06 19:49:50,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5158 states, 4031 states have (on average 1.3904738278342843) internal successors, (5605), 4095 states have internal predecessors, (5605), 846 states have call successors, (846), 282 states have call predecessors, (846), 280 states have return successors, (880), 836 states have call predecessors, (880), 840 states have call successors, (880) [2021-12-06 19:49:50,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5158 states to 5158 states and 7331 transitions. [2021-12-06 19:49:50,571 INFO L78 Accepts]: Start accepts. Automaton has 5158 states and 7331 transitions. Word has length 23 [2021-12-06 19:49:50,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:50,571 INFO L470 AbstractCegarLoop]: Abstraction has 5158 states and 7331 transitions. [2021-12-06 19:49:50,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-12-06 19:49:50,572 INFO L276 IsEmpty]: Start isEmpty. Operand 5158 states and 7331 transitions. [2021-12-06 19:49:50,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 19:49:50,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:50,575 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:50,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 19:49:50,575 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:50,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:50,575 INFO L85 PathProgramCache]: Analyzing trace with hash -95947495, now seen corresponding path program 1 times [2021-12-06 19:49:50,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:50,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360519334] [2021-12-06 19:49:50,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:50,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:50,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:49:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:50,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 19:49:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:50,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 19:49:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:50,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:49:50,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:50,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360519334] [2021-12-06 19:49:50,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360519334] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:49:50,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:49:50,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:49:50,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312038291] [2021-12-06 19:49:50,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:49:50,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:49:50,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:50,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:49:50,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:49:50,744 INFO L87 Difference]: Start difference. First operand 5158 states and 7331 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 19:49:54,405 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:49:56,140 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:49:59,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:50:01,870 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:50:04,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:50:04,274 INFO L93 Difference]: Finished difference Result 10800 states and 15472 transitions. [2021-12-06 19:50:04,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:50:04,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2021-12-06 19:50:04,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:50:04,303 INFO L225 Difference]: With dead ends: 10800 [2021-12-06 19:50:04,304 INFO L226 Difference]: Without dead ends: 5645 [2021-12-06 19:50:04,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:50:04,322 INFO L933 BasicCegarLoop]: 1705 mSDtfsCounter, 2570 mSDsluCounter, 2918 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 969 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 4623 SdHoareTripleChecker+Invalid, 2459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 969 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:50:04,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2718 Valid, 4623 Invalid, 2459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [969 Valid, 1488 Invalid, 2 Unknown, 0 Unchecked, 13.2s Time] [2021-12-06 19:50:04,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5645 states. [2021-12-06 19:50:04,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5645 to 5168. [2021-12-06 19:50:04,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5168 states, 4039 states have (on average 1.3892052488239663) internal successors, (5611), 4107 states have internal predecessors, (5611), 840 states have call successors, (840), 282 states have call predecessors, (840), 288 states have return successors, (886), 830 states have call predecessors, (886), 834 states have call successors, (886) [2021-12-06 19:50:04,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5168 states to 5168 states and 7337 transitions. [2021-12-06 19:50:04,570 INFO L78 Accepts]: Start accepts. Automaton has 5168 states and 7337 transitions. Word has length 48 [2021-12-06 19:50:04,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:50:04,570 INFO L470 AbstractCegarLoop]: Abstraction has 5168 states and 7337 transitions. [2021-12-06 19:50:04,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 19:50:04,571 INFO L276 IsEmpty]: Start isEmpty. Operand 5168 states and 7337 transitions. [2021-12-06 19:50:04,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 19:50:04,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:50:04,574 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:50:04,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 19:50:04,575 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:50:04,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:50:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1585769932, now seen corresponding path program 1 times [2021-12-06 19:50:04,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:50:04,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840822224] [2021-12-06 19:50:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:50:04,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:50:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:04,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 19:50:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:04,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 19:50:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:04,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:50:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:04,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 19:50:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:04,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:50:04,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:50:04,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840822224] [2021-12-06 19:50:04,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840822224] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:50:04,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:50:04,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:50:04,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511437670] [2021-12-06 19:50:04,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:50:04,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:50:04,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:50:04,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:50:04,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:50:04,803 INFO L87 Difference]: Start difference. First operand 5168 states and 7337 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 19:50:09,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:50:11,255 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:50:15,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:50:17,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:50:23,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:50:23,484 INFO L93 Difference]: Finished difference Result 11352 states and 16448 transitions. [2021-12-06 19:50:23,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 19:50:23,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2021-12-06 19:50:23,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:50:23,508 INFO L225 Difference]: With dead ends: 11352 [2021-12-06 19:50:23,508 INFO L226 Difference]: Without dead ends: 6187 [2021-12-06 19:50:23,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:50:23,523 INFO L933 BasicCegarLoop]: 1654 mSDtfsCounter, 2798 mSDsluCounter, 4869 mSDsCounter, 0 mSdLazyCounter, 2708 mSolverCounterSat, 1137 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2904 SdHoareTripleChecker+Valid, 6523 SdHoareTripleChecker+Invalid, 3849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1137 IncrementalHoareTripleChecker+Valid, 2708 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:50:23,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2904 Valid, 6523 Invalid, 3849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1137 Valid, 2708 Invalid, 4 Unknown, 0 Unchecked, 18.3s Time] [2021-12-06 19:50:23,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6187 states. [2021-12-06 19:50:23,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6187 to 4866. [2021-12-06 19:50:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4866 states, 3821 states have (on average 1.3904736979848207) internal successors, (5313), 3889 states have internal predecessors, (5313), 758 states have call successors, (758), 280 states have call predecessors, (758), 286 states have return successors, (804), 748 states have call predecessors, (804), 752 states have call successors, (804) [2021-12-06 19:50:23,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4866 states to 4866 states and 6875 transitions. [2021-12-06 19:50:23,736 INFO L78 Accepts]: Start accepts. Automaton has 4866 states and 6875 transitions. Word has length 61 [2021-12-06 19:50:23,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:50:23,736 INFO L470 AbstractCegarLoop]: Abstraction has 4866 states and 6875 transitions. [2021-12-06 19:50:23,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 19:50:23,737 INFO L276 IsEmpty]: Start isEmpty. Operand 4866 states and 6875 transitions. [2021-12-06 19:50:23,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 19:50:23,741 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:50:23,742 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:50:23,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 19:50:23,742 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:50:23,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:50:23,742 INFO L85 PathProgramCache]: Analyzing trace with hash 43225383, now seen corresponding path program 1 times [2021-12-06 19:50:23,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:50:23,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308598834] [2021-12-06 19:50:23,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:50:23,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:50:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:23,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:50:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:23,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:50:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:23,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:50:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:23,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 19:50:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:23,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:50:23,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:50:23,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308598834] [2021-12-06 19:50:23,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308598834] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:50:23,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:50:23,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:50:23,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70855795] [2021-12-06 19:50:23,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:50:23,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:50:23,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:50:23,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:50:23,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:50:23,929 INFO L87 Difference]: Start difference. First operand 4866 states and 6875 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 19:50:27,943 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:50:29,657 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:50:31,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:50:33,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:50:37,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:50:37,650 INFO L93 Difference]: Finished difference Result 10616 states and 15420 transitions. [2021-12-06 19:50:37,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:50:37,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 65 [2021-12-06 19:50:37,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:50:37,686 INFO L225 Difference]: With dead ends: 10616 [2021-12-06 19:50:37,686 INFO L226 Difference]: Without dead ends: 5753 [2021-12-06 19:50:37,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:50:37,700 INFO L933 BasicCegarLoop]: 1460 mSDtfsCounter, 1519 mSDsluCounter, 2478 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 945 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 2444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 945 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:50:37,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1591 Valid, 3938 Invalid, 2444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [945 Valid, 1497 Invalid, 2 Unknown, 0 Unchecked, 13.5s Time] [2021-12-06 19:50:37,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5753 states. [2021-12-06 19:50:37,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5753 to 4870. [2021-12-06 19:50:37,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4870 states, 3825 states have (on average 1.3900653594771242) internal successors, (5317), 3893 states have internal predecessors, (5317), 758 states have call successors, (758), 280 states have call predecessors, (758), 286 states have return successors, (804), 748 states have call predecessors, (804), 752 states have call successors, (804) [2021-12-06 19:50:37,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4870 states to 4870 states and 6879 transitions. [2021-12-06 19:50:37,874 INFO L78 Accepts]: Start accepts. Automaton has 4870 states and 6879 transitions. Word has length 65 [2021-12-06 19:50:37,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:50:37,875 INFO L470 AbstractCegarLoop]: Abstraction has 4870 states and 6879 transitions. [2021-12-06 19:50:37,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 19:50:37,875 INFO L276 IsEmpty]: Start isEmpty. Operand 4870 states and 6879 transitions. [2021-12-06 19:50:37,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 19:50:37,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:50:37,879 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:50:37,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 19:50:37,879 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:50:37,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:50:37,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1654589314, now seen corresponding path program 1 times [2021-12-06 19:50:37,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:50:37,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591133165] [2021-12-06 19:50:37,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:50:37,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:50:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:37,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:50:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:37,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:50:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:37,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 19:50:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:37,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 19:50:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:38,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 19:50:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:38,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 19:50:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:38,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:50:38,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:50:38,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591133165] [2021-12-06 19:50:38,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591133165] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:50:38,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:50:38,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:50:38,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280327666] [2021-12-06 19:50:38,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:50:38,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:50:38,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:50:38,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:50:38,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:50:38,027 INFO L87 Difference]: Start difference. First operand 4870 states and 6879 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 19:50:41,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:50:43,985 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:50:45,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:50:45,845 INFO L93 Difference]: Finished difference Result 11366 states and 16147 transitions. [2021-12-06 19:50:45,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:50:45,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2021-12-06 19:50:45,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:50:45,861 INFO L225 Difference]: With dead ends: 11366 [2021-12-06 19:50:45,861 INFO L226 Difference]: Without dead ends: 6499 [2021-12-06 19:50:45,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:50:45,872 INFO L933 BasicCegarLoop]: 1625 mSDtfsCounter, 2335 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 698 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2471 SdHoareTripleChecker+Valid, 3497 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 698 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:50:45,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2471 Valid, 3497 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [698 Valid, 1388 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2021-12-06 19:50:45,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6499 states. [2021-12-06 19:50:46,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6499 to 6156. [2021-12-06 19:50:46,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6156 states, 4883 states have (on average 1.4026213393405693) internal successors, (6849), 4967 states have internal predecessors, (6849), 902 states have call successors, (902), 356 states have call predecessors, (902), 370 states have return successors, (972), 904 states have call predecessors, (972), 896 states have call successors, (972) [2021-12-06 19:50:46,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6156 states to 6156 states and 8723 transitions. [2021-12-06 19:50:46,072 INFO L78 Accepts]: Start accepts. Automaton has 6156 states and 8723 transitions. Word has length 76 [2021-12-06 19:50:46,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:50:46,072 INFO L470 AbstractCegarLoop]: Abstraction has 6156 states and 8723 transitions. [2021-12-06 19:50:46,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 19:50:46,072 INFO L276 IsEmpty]: Start isEmpty. Operand 6156 states and 8723 transitions. [2021-12-06 19:50:46,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-06 19:50:46,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:50:46,078 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:50:46,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 19:50:46,078 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:50:46,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:50:46,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1247655667, now seen corresponding path program 1 times [2021-12-06 19:50:46,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:50:46,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094966998] [2021-12-06 19:50:46,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:50:46,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:50:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:46,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:50:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:46,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:50:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:46,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 19:50:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:46,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 19:50:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:46,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 19:50:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:46,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:50:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:50:46,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:50:46,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094966998] [2021-12-06 19:50:46,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094966998] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:50:46,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420322172] [2021-12-06 19:50:46,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:50:46,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:50:46,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:50:46,275 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:50:46,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:50:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:46,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:50:46,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:50:46,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:50:46,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:50:46,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420322172] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:50:46,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:50:46,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-06 19:50:46,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719959040] [2021-12-06 19:50:46,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:50:46,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:50:46,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:50:46,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:50:46,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:50:46,806 INFO L87 Difference]: Start difference. First operand 6156 states and 8723 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 19:50:47,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:50:47,137 INFO L93 Difference]: Finished difference Result 17250 states and 24425 transitions. [2021-12-06 19:50:47,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:50:47,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 89 [2021-12-06 19:50:47,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:50:47,182 INFO L225 Difference]: With dead ends: 17250 [2021-12-06 19:50:47,182 INFO L226 Difference]: Without dead ends: 11097 [2021-12-06 19:50:47,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:50:47,192 INFO L933 BasicCegarLoop]: 2506 mSDtfsCounter, 1610 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 4112 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:50:47,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1610 Valid, 4112 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:50:47,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11097 states. [2021-12-06 19:50:47,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11097 to 11078. [2021-12-06 19:50:47,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11078 states, 8729 states have (on average 1.3954633978691717) internal successors, (12181), 8877 states have internal predecessors, (12181), 1684 states have call successors, (1684), 634 states have call predecessors, (1684), 664 states have return successors, (1814), 1692 states have call predecessors, (1814), 1678 states have call successors, (1814) [2021-12-06 19:50:47,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11078 states to 11078 states and 15679 transitions. [2021-12-06 19:50:47,604 INFO L78 Accepts]: Start accepts. Automaton has 11078 states and 15679 transitions. Word has length 89 [2021-12-06 19:50:47,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:50:47,605 INFO L470 AbstractCegarLoop]: Abstraction has 11078 states and 15679 transitions. [2021-12-06 19:50:47,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 19:50:47,605 INFO L276 IsEmpty]: Start isEmpty. Operand 11078 states and 15679 transitions. [2021-12-06 19:50:47,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-06 19:50:47,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:50:47,610 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:50:47,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:50:47,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 19:50:47,811 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:50:47,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:50:47,811 INFO L85 PathProgramCache]: Analyzing trace with hash 482330957, now seen corresponding path program 1 times [2021-12-06 19:50:47,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:50:47,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215495040] [2021-12-06 19:50:47,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:50:47,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:50:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:47,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:50:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:47,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:50:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:47,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:50:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:47,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 19:50:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:48,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:50:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:48,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 19:50:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:48,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:50:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:48,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:50:48,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:50:48,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215495040] [2021-12-06 19:50:48,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215495040] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:50:48,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:50:48,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:50:48,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592824406] [2021-12-06 19:50:48,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:50:48,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:50:48,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:50:48,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:50:48,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:50:48,042 INFO L87 Difference]: Start difference. First operand 11078 states and 15679 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 19:50:53,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:50:55,787 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:00,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:02,650 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:04,897 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:08,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:51:08,804 INFO L93 Difference]: Finished difference Result 12859 states and 18579 transitions. [2021-12-06 19:51:08,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:51:08,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 87 [2021-12-06 19:51:08,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:51:08,838 INFO L225 Difference]: With dead ends: 12859 [2021-12-06 19:51:08,839 INFO L226 Difference]: Without dead ends: 12856 [2021-12-06 19:51:08,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:51:08,842 INFO L933 BasicCegarLoop]: 1525 mSDtfsCounter, 1660 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 717 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 3983 SdHoareTripleChecker+Invalid, 2839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:51:08,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1745 Valid, 3983 Invalid, 2839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 2118 Invalid, 4 Unknown, 0 Unchecked, 20.3s Time] [2021-12-06 19:51:08,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12856 states. [2021-12-06 19:51:09,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12856 to 11077. [2021-12-06 19:51:09,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11077 states, 8729 states have (on average 1.3943177912704776) internal successors, (12171), 8876 states have internal predecessors, (12171), 1683 states have call successors, (1683), 634 states have call predecessors, (1683), 664 states have return successors, (1814), 1692 states have call predecessors, (1814), 1678 states have call successors, (1814) [2021-12-06 19:51:09,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11077 states to 11077 states and 15668 transitions. [2021-12-06 19:51:09,245 INFO L78 Accepts]: Start accepts. Automaton has 11077 states and 15668 transitions. Word has length 87 [2021-12-06 19:51:09,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:51:09,246 INFO L470 AbstractCegarLoop]: Abstraction has 11077 states and 15668 transitions. [2021-12-06 19:51:09,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 19:51:09,246 INFO L276 IsEmpty]: Start isEmpty. Operand 11077 states and 15668 transitions. [2021-12-06 19:51:09,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-06 19:51:09,253 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:51:09,253 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:51:09,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 19:51:09,254 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:51:09,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:51:09,254 INFO L85 PathProgramCache]: Analyzing trace with hash 455244955, now seen corresponding path program 1 times [2021-12-06 19:51:09,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:51:09,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103879931] [2021-12-06 19:51:09,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:51:09,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:51:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:09,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:51:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:09,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:51:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:09,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:51:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:09,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:51:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:09,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 19:51:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:09,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:51:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:09,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:51:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:09,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 19:51:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:09,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 19:51:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:09,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 19:51:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:09,587 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 19:51:09,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:51:09,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103879931] [2021-12-06 19:51:09,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103879931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:51:09,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:51:09,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:51:09,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887606284] [2021-12-06 19:51:09,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:51:09,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:51:09,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:51:09,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:51:09,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:51:09,589 INFO L87 Difference]: Start difference. First operand 11077 states and 15668 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 19:51:14,258 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:16,325 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:18,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:21,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:23,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:27,619 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:29,647 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:31,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:36,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:51:36,883 INFO L93 Difference]: Finished difference Result 23573 states and 33693 transitions. [2021-12-06 19:51:36,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 19:51:36,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 120 [2021-12-06 19:51:36,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:51:36,916 INFO L225 Difference]: With dead ends: 23573 [2021-12-06 19:51:36,916 INFO L226 Difference]: Without dead ends: 12499 [2021-12-06 19:51:36,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:51:36,935 INFO L933 BasicCegarLoop]: 1457 mSDtfsCounter, 1814 mSDsluCounter, 2882 mSDsCounter, 0 mSdLazyCounter, 2474 mSolverCounterSat, 655 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 4339 SdHoareTripleChecker+Invalid, 3136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 2474 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:51:36,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1955 Valid, 4339 Invalid, 3136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 2474 Invalid, 7 Unknown, 0 Unchecked, 26.8s Time] [2021-12-06 19:51:36,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12499 states. [2021-12-06 19:51:37,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12499 to 11173. [2021-12-06 19:51:37,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11173 states, 8809 states have (on average 1.3934612328300602) internal successors, (12275), 8956 states have internal predecessors, (12275), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1838), 1708 states have call predecessors, (1838), 1694 states have call successors, (1838) [2021-12-06 19:51:37,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11173 states to 11173 states and 15812 transitions. [2021-12-06 19:51:37,375 INFO L78 Accepts]: Start accepts. Automaton has 11173 states and 15812 transitions. Word has length 120 [2021-12-06 19:51:37,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:51:37,376 INFO L470 AbstractCegarLoop]: Abstraction has 11173 states and 15812 transitions. [2021-12-06 19:51:37,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 19:51:37,376 INFO L276 IsEmpty]: Start isEmpty. Operand 11173 states and 15812 transitions. [2021-12-06 19:51:37,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-06 19:51:37,384 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:51:37,385 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:51:37,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 19:51:37,385 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:51:37,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:51:37,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1788738343, now seen corresponding path program 1 times [2021-12-06 19:51:37,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:51:37,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911548742] [2021-12-06 19:51:37,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:51:37,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:51:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:37,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:51:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:37,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:51:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:37,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:51:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:37,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:51:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:37,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 19:51:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:37,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:51:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:37,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:51:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:37,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 19:51:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:37,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 19:51:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:37,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 19:51:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:37,678 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 19:51:37,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:51:37,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911548742] [2021-12-06 19:51:37,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911548742] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:51:37,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:51:37,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:51:37,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892311013] [2021-12-06 19:51:37,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:51:37,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:51:37,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:51:37,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:51:37,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:51:37,680 INFO L87 Difference]: Start difference. First operand 11173 states and 15812 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 19:51:42,419 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:44,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:46,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:49,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:52,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:54,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:51:54,953 INFO L93 Difference]: Finished difference Result 23247 states and 33147 transitions. [2021-12-06 19:51:54,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:51:54,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 120 [2021-12-06 19:51:54,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:51:54,984 INFO L225 Difference]: With dead ends: 23247 [2021-12-06 19:51:54,984 INFO L226 Difference]: Without dead ends: 12077 [2021-12-06 19:51:55,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:51:55,006 INFO L933 BasicCegarLoop]: 1445 mSDtfsCounter, 1449 mSDsluCounter, 2389 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 367 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 3834 SdHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:51:55,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 3834 Invalid, 2341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 1969 Invalid, 5 Unknown, 0 Unchecked, 16.8s Time] [2021-12-06 19:51:55,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12077 states. [2021-12-06 19:51:55,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12077 to 11181. [2021-12-06 19:51:55,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11181 states, 8817 states have (on average 1.3931042304638765) internal successors, (12283), 8964 states have internal predecessors, (12283), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1838), 1708 states have call predecessors, (1838), 1694 states have call successors, (1838) [2021-12-06 19:51:55,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11181 states to 11181 states and 15820 transitions. [2021-12-06 19:51:55,371 INFO L78 Accepts]: Start accepts. Automaton has 11181 states and 15820 transitions. Word has length 120 [2021-12-06 19:51:55,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:51:55,371 INFO L470 AbstractCegarLoop]: Abstraction has 11181 states and 15820 transitions. [2021-12-06 19:51:55,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 19:51:55,371 INFO L276 IsEmpty]: Start isEmpty. Operand 11181 states and 15820 transitions. [2021-12-06 19:51:55,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-06 19:51:55,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:51:55,378 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:51:55,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 19:51:55,378 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:51:55,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:51:55,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1919352628, now seen corresponding path program 1 times [2021-12-06 19:51:55,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:51:55,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741728823] [2021-12-06 19:51:55,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:51:55,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:51:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:55,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:51:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:55,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:51:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:55,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:51:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:55,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:51:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:55,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 19:51:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:55,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:51:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:55,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:51:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:55,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 19:51:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:55,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 19:51:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 19:51:55,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:51:55,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741728823] [2021-12-06 19:51:55,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741728823] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:51:55,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:51:55,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:51:55,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185548834] [2021-12-06 19:51:55,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:51:55,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:51:55,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:51:55,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:51:55,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:51:55,628 INFO L87 Difference]: Start difference. First operand 11181 states and 15820 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-06 19:51:59,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:52:01,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:52:03,687 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:52:06,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:52:09,589 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:52:12,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:52:12,223 INFO L93 Difference]: Finished difference Result 23515 states and 33595 transitions. [2021-12-06 19:52:12,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:52:12,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 122 [2021-12-06 19:52:12,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:52:12,254 INFO L225 Difference]: With dead ends: 23515 [2021-12-06 19:52:12,254 INFO L226 Difference]: Without dead ends: 12337 [2021-12-06 19:52:12,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:52:12,274 INFO L933 BasicCegarLoop]: 1516 mSDtfsCounter, 2080 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 938 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2230 SdHoareTripleChecker+Valid, 3585 SdHoareTripleChecker+Invalid, 2534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:52:12,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2230 Valid, 3585 Invalid, 2534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [938 Valid, 1592 Invalid, 4 Unknown, 0 Unchecked, 16.1s Time] [2021-12-06 19:52:12,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12337 states. [2021-12-06 19:52:12,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12337 to 11234. [2021-12-06 19:52:12,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11234 states, 8870 states have (on average 1.3898534385569334) internal successors, (12328), 9017 states have internal predecessors, (12328), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1838), 1708 states have call predecessors, (1838), 1694 states have call successors, (1838) [2021-12-06 19:52:12,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11234 states to 11234 states and 15865 transitions. [2021-12-06 19:52:12,644 INFO L78 Accepts]: Start accepts. Automaton has 11234 states and 15865 transitions. Word has length 122 [2021-12-06 19:52:12,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:52:12,645 INFO L470 AbstractCegarLoop]: Abstraction has 11234 states and 15865 transitions. [2021-12-06 19:52:12,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-06 19:52:12,645 INFO L276 IsEmpty]: Start isEmpty. Operand 11234 states and 15865 transitions. [2021-12-06 19:52:12,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-06 19:52:12,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:52:12,651 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:52:12,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 19:52:12,651 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:52:12,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:52:12,652 INFO L85 PathProgramCache]: Analyzing trace with hash 208567492, now seen corresponding path program 1 times [2021-12-06 19:52:12,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:52:12,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901428435] [2021-12-06 19:52:12,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:52:12,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:52:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:12,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:52:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:12,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:52:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:12,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:52:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:12,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:52:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:12,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 19:52:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:12,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:52:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:12,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:52:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:12,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 19:52:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:12,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 19:52:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:12,853 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 19:52:12,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:52:12,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901428435] [2021-12-06 19:52:12,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901428435] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:52:12,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:52:12,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:52:12,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441948197] [2021-12-06 19:52:12,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:52:12,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:52:12,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:52:12,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:52:12,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:52:12,854 INFO L87 Difference]: Start difference. First operand 11234 states and 15865 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 19:52:17,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:52:20,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:52:22,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:52:25,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:52:27,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:52:31,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:52:31,364 INFO L93 Difference]: Finished difference Result 23368 states and 33169 transitions. [2021-12-06 19:52:31,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:52:31,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 122 [2021-12-06 19:52:31,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:52:31,394 INFO L225 Difference]: With dead ends: 23368 [2021-12-06 19:52:31,394 INFO L226 Difference]: Without dead ends: 12125 [2021-12-06 19:52:31,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:52:31,413 INFO L933 BasicCegarLoop]: 1444 mSDtfsCounter, 1700 mSDsluCounter, 3265 mSDsCounter, 0 mSdLazyCounter, 2538 mSolverCounterSat, 628 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 4709 SdHoareTripleChecker+Invalid, 3171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 2538 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:52:31,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1840 Valid, 4709 Invalid, 3171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 2538 Invalid, 5 Unknown, 0 Unchecked, 18.0s Time] [2021-12-06 19:52:31,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12125 states. [2021-12-06 19:52:31,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12125 to 11236. [2021-12-06 19:52:31,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11236 states, 8872 states have (on average 1.3890892696122632) internal successors, (12324), 9019 states have internal predecessors, (12324), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1838), 1708 states have call predecessors, (1838), 1694 states have call successors, (1838) [2021-12-06 19:52:31,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11236 states to 11236 states and 15861 transitions. [2021-12-06 19:52:31,778 INFO L78 Accepts]: Start accepts. Automaton has 11236 states and 15861 transitions. Word has length 122 [2021-12-06 19:52:31,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:52:31,779 INFO L470 AbstractCegarLoop]: Abstraction has 11236 states and 15861 transitions. [2021-12-06 19:52:31,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 19:52:31,779 INFO L276 IsEmpty]: Start isEmpty. Operand 11236 states and 15861 transitions. [2021-12-06 19:52:31,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-06 19:52:31,785 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:52:31,785 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:52:31,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 19:52:31,785 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:52:31,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:52:31,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1843452540, now seen corresponding path program 1 times [2021-12-06 19:52:31,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:52:31,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965648682] [2021-12-06 19:52:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:52:31,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:52:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:52:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:31,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:52:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:31,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:52:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:31,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:52:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:31,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 19:52:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:31,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:52:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:31,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 19:52:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:31,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 19:52:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:32,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 19:52:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 19:52:32,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:52:32,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965648682] [2021-12-06 19:52:32,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965648682] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:52:32,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:52:32,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:52:32,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439286512] [2021-12-06 19:52:32,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:52:32,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:52:32,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:52:32,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:52:32,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:52:32,062 INFO L87 Difference]: Start difference. First operand 11236 states and 15861 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 19:52:37,154 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:52:39,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:52:41,262 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:52:43,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:52:47,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:52:49,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:52:51,975 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:52:58,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:00,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:02,834 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:04,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:06,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:11,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:12,933 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:14,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:16,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:18,677 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:20,941 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:23,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:53:23,094 INFO L93 Difference]: Finished difference Result 29996 states and 42579 transitions. [2021-12-06 19:53:23,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:53:23,095 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 125 [2021-12-06 19:53:23,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:53:23,142 INFO L225 Difference]: With dead ends: 29996 [2021-12-06 19:53:23,142 INFO L226 Difference]: Without dead ends: 18763 [2021-12-06 19:53:23,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:53:23,163 INFO L933 BasicCegarLoop]: 2878 mSDtfsCounter, 3459 mSDsluCounter, 7072 mSDsCounter, 0 mSdLazyCounter, 4950 mSolverCounterSat, 1551 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3661 SdHoareTripleChecker+Valid, 9950 SdHoareTripleChecker+Invalid, 6514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1551 IncrementalHoareTripleChecker+Valid, 4950 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:53:23,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3661 Valid, 9950 Invalid, 6514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1551 Valid, 4950 Invalid, 13 Unknown, 0 Unchecked, 50.2s Time] [2021-12-06 19:53:23,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18763 states. [2021-12-06 19:53:23,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18763 to 11252. [2021-12-06 19:53:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11252 states, 8884 states have (on average 1.3885637100405224) internal successors, (12336), 9031 states have internal predecessors, (12336), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 668 states have return successors, (1846), 1712 states have call predecessors, (1846), 1694 states have call successors, (1846) [2021-12-06 19:53:23,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11252 states to 11252 states and 15881 transitions. [2021-12-06 19:53:23,613 INFO L78 Accepts]: Start accepts. Automaton has 11252 states and 15881 transitions. Word has length 125 [2021-12-06 19:53:23,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:23,613 INFO L470 AbstractCegarLoop]: Abstraction has 11252 states and 15881 transitions. [2021-12-06 19:53:23,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 19:53:23,613 INFO L276 IsEmpty]: Start isEmpty. Operand 11252 states and 15881 transitions. [2021-12-06 19:53:23,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-06 19:53:23,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:23,620 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:53:23,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 19:53:23,620 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:53:23,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:23,621 INFO L85 PathProgramCache]: Analyzing trace with hash 2101997227, now seen corresponding path program 1 times [2021-12-06 19:53:23,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:53:23,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856210969] [2021-12-06 19:53:23,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:23,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:53:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:23,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:53:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:23,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:53:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:23,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:53:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:23,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:53:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:23,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:53:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:23,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:53:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:23,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:53:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:23,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:53:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:23,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:53:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:23,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 19:53:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:23,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 19:53:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:23,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:53:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:23,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 19:53:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:23,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 19:53:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:23,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 19:53:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:23,907 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-06 19:53:23,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:53:23,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856210969] [2021-12-06 19:53:23,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856210969] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:53:23,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:53:23,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:53:23,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399268197] [2021-12-06 19:53:23,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:53:23,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:53:23,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:53:23,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:53:23,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:53:23,909 INFO L87 Difference]: Start difference. First operand 11252 states and 15881 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 19:53:28,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:30,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:32,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:35,196 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:37,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:39,669 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:42,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:53:42,274 INFO L93 Difference]: Finished difference Result 23973 states and 34351 transitions. [2021-12-06 19:53:42,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:53:42,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 171 [2021-12-06 19:53:42,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:53:42,305 INFO L225 Difference]: With dead ends: 23973 [2021-12-06 19:53:42,305 INFO L226 Difference]: Without dead ends: 12724 [2021-12-06 19:53:42,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:53:42,322 INFO L933 BasicCegarLoop]: 1499 mSDtfsCounter, 1818 mSDsluCounter, 2653 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 678 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1959 SdHoareTripleChecker+Valid, 4152 SdHoareTripleChecker+Invalid, 2684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 678 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:53:42,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1959 Valid, 4152 Invalid, 2684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [678 Valid, 2002 Invalid, 4 Unknown, 0 Unchecked, 17.8s Time] [2021-12-06 19:53:42,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12724 states. [2021-12-06 19:53:42,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12724 to 11268. [2021-12-06 19:53:42,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11268 states, 8900 states have (on average 1.3878651685393257) internal successors, (12352), 9047 states have internal predecessors, (12352), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 668 states have return successors, (1846), 1712 states have call predecessors, (1846), 1694 states have call successors, (1846) [2021-12-06 19:53:42,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11268 states to 11268 states and 15897 transitions. [2021-12-06 19:53:42,742 INFO L78 Accepts]: Start accepts. Automaton has 11268 states and 15897 transitions. Word has length 171 [2021-12-06 19:53:42,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:42,742 INFO L470 AbstractCegarLoop]: Abstraction has 11268 states and 15897 transitions. [2021-12-06 19:53:42,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 19:53:42,742 INFO L276 IsEmpty]: Start isEmpty. Operand 11268 states and 15897 transitions. [2021-12-06 19:53:42,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-06 19:53:42,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:42,749 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:53:42,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 19:53:42,749 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:53:42,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:42,750 INFO L85 PathProgramCache]: Analyzing trace with hash 786119707, now seen corresponding path program 1 times [2021-12-06 19:53:42,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:53:42,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347223151] [2021-12-06 19:53:42,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:42,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:53:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:42,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:53:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:43,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:53:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:43,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:53:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:43,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:53:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:43,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:53:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:43,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:53:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:43,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 19:53:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:43,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:53:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:43,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:53:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:43,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 19:53:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 19:53:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:43,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:53:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:43,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 19:53:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:43,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 19:53:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:43,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 19:53:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:43,142 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-06 19:53:43,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:53:43,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347223151] [2021-12-06 19:53:43,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347223151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:53:43,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:53:43,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 19:53:43,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061492853] [2021-12-06 19:53:43,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:53:43,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 19:53:43,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:53:43,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 19:53:43,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:53:43,143 INFO L87 Difference]: Start difference. First operand 11268 states and 15897 transitions. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 19:53:50,257 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:52,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:54,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:56,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:53:58,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:54:00,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:54:02,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:54:09,100 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:54:11,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:54:13,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:54:15,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:54:17,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:54:19,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:54:26,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:54:34,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:54:34,805 INFO L93 Difference]: Finished difference Result 30120 states and 43005 transitions. [2021-12-06 19:54:34,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:54:34,805 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 174 [2021-12-06 19:54:34,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:54:34,849 INFO L225 Difference]: With dead ends: 30120 [2021-12-06 19:54:34,849 INFO L226 Difference]: Without dead ends: 18855 [2021-12-06 19:54:34,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:54:34,868 INFO L933 BasicCegarLoop]: 2874 mSDtfsCounter, 3461 mSDsluCounter, 12163 mSDsCounter, 0 mSdLazyCounter, 8300 mSolverCounterSat, 1566 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3664 SdHoareTripleChecker+Valid, 15037 SdHoareTripleChecker+Invalid, 9880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1566 IncrementalHoareTripleChecker+Valid, 8300 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:54:34,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3664 Valid, 15037 Invalid, 9880 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1566 Valid, 8300 Invalid, 14 Unknown, 0 Unchecked, 50.6s Time] [2021-12-06 19:54:34,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18855 states. [2021-12-06 19:54:35,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18855 to 11292. [2021-12-06 19:54:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11292 states, 8920 states have (on average 1.3869955156950673) internal successors, (12372), 9067 states have internal predecessors, (12372), 1703 states have call successors, (1703), 634 states have call predecessors, (1703), 668 states have return successors, (1850), 1716 states have call predecessors, (1850), 1698 states have call successors, (1850) [2021-12-06 19:54:35,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11292 states to 11292 states and 15925 transitions. [2021-12-06 19:54:35,349 INFO L78 Accepts]: Start accepts. Automaton has 11292 states and 15925 transitions. Word has length 174 [2021-12-06 19:54:35,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:54:35,349 INFO L470 AbstractCegarLoop]: Abstraction has 11292 states and 15925 transitions. [2021-12-06 19:54:35,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 19:54:35,349 INFO L276 IsEmpty]: Start isEmpty. Operand 11292 states and 15925 transitions. [2021-12-06 19:54:35,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-06 19:54:35,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:54:35,356 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:35,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 19:54:35,356 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:54:35,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:54:35,357 INFO L85 PathProgramCache]: Analyzing trace with hash -356933797, now seen corresponding path program 1 times [2021-12-06 19:54:35,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:54:35,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582228627] [2021-12-06 19:54:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:54:35,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:54:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:35,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:54:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:35,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:54:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:35,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:54:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:35,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:54:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:35,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:54:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:35,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:54:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:35,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 19:54:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:35,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:54:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:35,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:54:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:35,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 19:54:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:35,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:54:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:35,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 19:54:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:35,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:54:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:35,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 19:54:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:35,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 19:54:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:35,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 19:54:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-06 19:54:35,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:54:35,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582228627] [2021-12-06 19:54:35,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582228627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:54:35,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:54:35,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 19:54:35,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403187708] [2021-12-06 19:54:35,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:54:35,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 19:54:35,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:54:35,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:54:35,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:54:35,746 INFO L87 Difference]: Start difference. First operand 11292 states and 15925 transitions. Second operand has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 7 states have internal predecessors, (127), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 19:54:43,022 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:54:45,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:54:47,139 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:54:49,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:54:51,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:54:53,325 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:54:55,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:54:57,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:55:03,995 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:55:06,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:55:08,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:55:15,735 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:55:19,182 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:55:22,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:55:32,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:55:34,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:55:37,326 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:55:39,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:55:41,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:55:41,350 INFO L93 Difference]: Finished difference Result 30256 states and 43169 transitions. [2021-12-06 19:55:41,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 19:55:41,351 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 7 states have internal predecessors, (127), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 184 [2021-12-06 19:55:41,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:55:41,403 INFO L225 Difference]: With dead ends: 30256 [2021-12-06 19:55:41,403 INFO L226 Difference]: Without dead ends: 18967 [2021-12-06 19:55:41,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=221, Invalid=901, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 19:55:41,423 INFO L933 BasicCegarLoop]: 2884 mSDtfsCounter, 4116 mSDsluCounter, 13258 mSDsCounter, 0 mSdLazyCounter, 8942 mSolverCounterSat, 1916 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4319 SdHoareTripleChecker+Valid, 16142 SdHoareTripleChecker+Invalid, 10874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1916 IncrementalHoareTripleChecker+Valid, 8942 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:55:41,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4319 Valid, 16142 Invalid, 10874 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1916 Valid, 8942 Invalid, 16 Unknown, 0 Unchecked, 64.3s Time] [2021-12-06 19:55:41,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18967 states. [2021-12-06 19:55:41,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18967 to 11308. [2021-12-06 19:55:41,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11308 states, 8936 states have (on average 1.3863025962399285) internal successors, (12388), 9083 states have internal predecessors, (12388), 1703 states have call successors, (1703), 634 states have call predecessors, (1703), 668 states have return successors, (1850), 1716 states have call predecessors, (1850), 1698 states have call successors, (1850) [2021-12-06 19:55:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11308 states to 11308 states and 15941 transitions. [2021-12-06 19:55:42,034 INFO L78 Accepts]: Start accepts. Automaton has 11308 states and 15941 transitions. Word has length 184 [2021-12-06 19:55:42,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:55:42,035 INFO L470 AbstractCegarLoop]: Abstraction has 11308 states and 15941 transitions. [2021-12-06 19:55:42,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 7 states have internal predecessors, (127), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 19:55:42,035 INFO L276 IsEmpty]: Start isEmpty. Operand 11308 states and 15941 transitions. [2021-12-06 19:55:42,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-06 19:55:42,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:55:42,041 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:55:42,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 19:55:42,041 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:55:42,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:55:42,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1353598526, now seen corresponding path program 1 times [2021-12-06 19:55:42,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:55:42,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101811173] [2021-12-06 19:55:42,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:55:42,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:55:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:55:42,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:55:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:55:42,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:55:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:55:42,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:55:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:55:42,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:55:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:55:42,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:55:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:55:42,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:55:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:55:42,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 19:55:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:55:42,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:55:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:55:42,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:55:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:55:42,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 19:55:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:55:42,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:55:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:55:42,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 19:55:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:55:42,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:55:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:55:42,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 19:55:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:55:42,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 19:55:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:55:42,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 19:55:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:55:42,408 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-06 19:55:42,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:55:42,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101811173] [2021-12-06 19:55:42,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101811173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:55:42,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:55:42,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:55:42,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330447789] [2021-12-06 19:55:42,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:55:42,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:55:42,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:55:42,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:55:42,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:55:42,409 INFO L87 Difference]: Start difference. First operand 11308 states and 15941 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 19:55:47,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:55:49,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:55:51,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:55:53,583 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:55:59,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:56:02,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:56:04,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:04,132 INFO L93 Difference]: Finished difference Result 23925 states and 34141 transitions. [2021-12-06 19:56:04,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:56:04,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 186 [2021-12-06 19:56:04,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:04,180 INFO L225 Difference]: With dead ends: 23925 [2021-12-06 19:56:04,180 INFO L226 Difference]: Without dead ends: 12620 [2021-12-06 19:56:04,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:56:04,211 INFO L933 BasicCegarLoop]: 1463 mSDtfsCounter, 2129 mSDsluCounter, 3557 mSDsCounter, 0 mSdLazyCounter, 2596 mSolverCounterSat, 1015 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2261 SdHoareTripleChecker+Valid, 5020 SdHoareTripleChecker+Invalid, 3617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1015 IncrementalHoareTripleChecker+Valid, 2596 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:04,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2261 Valid, 5020 Invalid, 3617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1015 Valid, 2596 Invalid, 6 Unknown, 0 Unchecked, 21.0s Time] [2021-12-06 19:56:04,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12620 states. [2021-12-06 19:56:04,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12620 to 11324. [2021-12-06 19:56:04,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11324 states, 8952 states have (on average 1.3856121537086685) internal successors, (12404), 9099 states have internal predecessors, (12404), 1703 states have call successors, (1703), 634 states have call predecessors, (1703), 668 states have return successors, (1850), 1716 states have call predecessors, (1850), 1698 states have call successors, (1850) [2021-12-06 19:56:04,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11324 states to 11324 states and 15957 transitions. [2021-12-06 19:56:04,744 INFO L78 Accepts]: Start accepts. Automaton has 11324 states and 15957 transitions. Word has length 186 [2021-12-06 19:56:04,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:04,744 INFO L470 AbstractCegarLoop]: Abstraction has 11324 states and 15957 transitions. [2021-12-06 19:56:04,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 19:56:04,744 INFO L276 IsEmpty]: Start isEmpty. Operand 11324 states and 15957 transitions. [2021-12-06 19:56:04,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-06 19:56:04,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:04,751 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:04,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 19:56:04,751 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:04,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:04,751 INFO L85 PathProgramCache]: Analyzing trace with hash 904718948, now seen corresponding path program 1 times [2021-12-06 19:56:04,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:04,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89099427] [2021-12-06 19:56:04,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:04,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:04,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:56:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:04,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:04,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:04,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:04,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:56:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:04,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:56:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:04,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 19:56:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:04,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:05,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:05,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 19:56:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:05,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 19:56:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:05,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 19:56:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:05,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 19:56:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:05,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:05,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 19:56:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:05,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 19:56:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:05,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-06 19:56:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:05,092 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-06 19:56:05,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:05,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89099427] [2021-12-06 19:56:05,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89099427] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:05,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:05,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 19:56:05,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640501440] [2021-12-06 19:56:05,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:05,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 19:56:05,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:05,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 19:56:05,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:56:05,094 INFO L87 Difference]: Start difference. First operand 11324 states and 15957 transitions. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-06 19:56:11,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:56:13,924 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:56:15,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:56:18,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:56:20,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:56:22,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:56:24,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:56:30,140 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:56:31,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:56:33,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:56:36,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:56:37,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:56:38,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:56:40,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:56:44,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:44,446 INFO L93 Difference]: Finished difference Result 12869 states and 18215 transitions. [2021-12-06 19:56:44,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:56:44,447 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 194 [2021-12-06 19:56:44,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:44,483 INFO L225 Difference]: With dead ends: 12869 [2021-12-06 19:56:44,484 INFO L226 Difference]: Without dead ends: 11939 [2021-12-06 19:56:44,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:56:44,493 INFO L933 BasicCegarLoop]: 1448 mSDtfsCounter, 1400 mSDsluCounter, 6005 mSDsCounter, 0 mSdLazyCounter, 4196 mSolverCounterSat, 353 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 7453 SdHoareTripleChecker+Invalid, 4559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 4196 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:44,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 7453 Invalid, 4559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 4196 Invalid, 10 Unknown, 0 Unchecked, 38.7s Time] [2021-12-06 19:56:44,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11939 states. [2021-12-06 19:56:44,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11939 to 11071. [2021-12-06 19:56:44,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11071 states, 8756 states have (on average 1.386477843764276) internal successors, (12140), 8896 states have internal predecessors, (12140), 1650 states have call successors, (1650), 630 states have call predecessors, (1650), 664 states have return successors, (1798), 1666 states have call predecessors, (1798), 1646 states have call successors, (1798) [2021-12-06 19:56:45,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11071 states to 11071 states and 15588 transitions. [2021-12-06 19:56:45,007 INFO L78 Accepts]: Start accepts. Automaton has 11071 states and 15588 transitions. Word has length 194 [2021-12-06 19:56:45,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:45,007 INFO L470 AbstractCegarLoop]: Abstraction has 11071 states and 15588 transitions. [2021-12-06 19:56:45,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-06 19:56:45,007 INFO L276 IsEmpty]: Start isEmpty. Operand 11071 states and 15588 transitions. [2021-12-06 19:56:45,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-06 19:56:45,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:45,014 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:45,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 19:56:45,014 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:45,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:45,014 INFO L85 PathProgramCache]: Analyzing trace with hash -340045533, now seen corresponding path program 1 times [2021-12-06 19:56:45,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:45,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938788693] [2021-12-06 19:56:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:45,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:45,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:56:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:45,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:45,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:45,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:45,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:56:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:45,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:56:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:45,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 19:56:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:45,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:45,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:45,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 19:56:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:45,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 19:56:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:45,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 19:56:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:45,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 19:56:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:45,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:45,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 19:56:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:45,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 19:56:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:45,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-06 19:56:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:45,295 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-06 19:56:45,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:45,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938788693] [2021-12-06 19:56:45,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938788693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:45,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:45,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:56:45,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918794974] [2021-12-06 19:56:45,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:45,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:56:45,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:45,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:56:45,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:56:45,297 INFO L87 Difference]: Start difference. First operand 11071 states and 15588 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (20), 7 states have call predecessors, (20), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-06 19:56:49,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:56:51,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:56:56,764 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:56:59,195 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:57:01,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:57:04,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:57:04,952 INFO L93 Difference]: Finished difference Result 23009 states and 32508 transitions. [2021-12-06 19:57:04,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 19:57:04,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (20), 7 states have call predecessors, (20), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 194 [2021-12-06 19:57:04,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:57:04,990 INFO L225 Difference]: With dead ends: 23009 [2021-12-06 19:57:04,990 INFO L226 Difference]: Without dead ends: 11941 [2021-12-06 19:57:05,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:57:05,014 INFO L933 BasicCegarLoop]: 2737 mSDtfsCounter, 4013 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 2454 mSolverCounterSat, 1873 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4197 SdHoareTripleChecker+Valid, 5285 SdHoareTripleChecker+Invalid, 4332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1873 IncrementalHoareTripleChecker+Valid, 2454 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:57:05,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4197 Valid, 5285 Invalid, 4332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1873 Valid, 2454 Invalid, 5 Unknown, 0 Unchecked, 19.0s Time] [2021-12-06 19:57:05,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11941 states. [2021-12-06 19:57:05,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11941 to 10909. [2021-12-06 19:57:05,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10909 states, 8653 states have (on average 1.3883046342309027) internal successors, (12013), 8782 states have internal predecessors, (12013), 1606 states have call successors, (1606), 624 states have call predecessors, (1606), 649 states have return successors, (1650), 1628 states have call predecessors, (1650), 1600 states have call successors, (1650) [2021-12-06 19:57:05,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10909 states to 10909 states and 15269 transitions. [2021-12-06 19:57:05,486 INFO L78 Accepts]: Start accepts. Automaton has 10909 states and 15269 transitions. Word has length 194 [2021-12-06 19:57:05,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:57:05,486 INFO L470 AbstractCegarLoop]: Abstraction has 10909 states and 15269 transitions. [2021-12-06 19:57:05,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (20), 7 states have call predecessors, (20), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-06 19:57:05,486 INFO L276 IsEmpty]: Start isEmpty. Operand 10909 states and 15269 transitions. [2021-12-06 19:57:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-12-06 19:57:05,493 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:57:05,493 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:57:05,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 19:57:05,494 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:57:05,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:57:05,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1536879835, now seen corresponding path program 1 times [2021-12-06 19:57:05,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:57:05,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337957969] [2021-12-06 19:57:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:57:05,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:57:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:57:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:57:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:57:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:57:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:57:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:57:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 19:57:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:57:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:57:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 19:57:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 19:57:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 19:57:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 19:57:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:57:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 19:57:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 19:57:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-06 19:57:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 19:57:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-06 19:57:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-06 19:57:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:05,816 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-06 19:57:05,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:57:05,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337957969] [2021-12-06 19:57:05,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337957969] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:57:05,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:57:05,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 19:57:05,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577211347] [2021-12-06 19:57:05,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:57:05,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:57:05,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:57:05,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:57:05,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:57:05,817 INFO L87 Difference]: Start difference. First operand 10909 states and 15269 transitions. Second operand has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (23), 8 states have call predecessors, (23), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 19:57:11,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:57:13,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:57:19,086 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:57:21,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:57:23,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:57:23,784 INFO L93 Difference]: Finished difference Result 23531 states and 33262 transitions. [2021-12-06 19:57:23,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 19:57:23,785 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (23), 8 states have call predecessors, (23), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 199 [2021-12-06 19:57:23,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:57:23,826 INFO L225 Difference]: With dead ends: 23531 [2021-12-06 19:57:23,826 INFO L226 Difference]: Without dead ends: 12625 [2021-12-06 19:57:23,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:57:23,850 INFO L933 BasicCegarLoop]: 1415 mSDtfsCounter, 2466 mSDsluCounter, 2995 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 1327 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2590 SdHoareTripleChecker+Valid, 4410 SdHoareTripleChecker+Invalid, 3967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1327 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:57:23,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2590 Valid, 4410 Invalid, 3967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1327 Valid, 2636 Invalid, 4 Unknown, 0 Unchecked, 17.3s Time] [2021-12-06 19:57:23,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12625 states. [2021-12-06 19:57:24,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12625 to 10917. [2021-12-06 19:57:24,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10917 states, 8661 states have (on average 1.3879459646692067) internal successors, (12021), 8790 states have internal predecessors, (12021), 1606 states have call successors, (1606), 624 states have call predecessors, (1606), 649 states have return successors, (1650), 1628 states have call predecessors, (1650), 1600 states have call successors, (1650) [2021-12-06 19:57:24,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10917 states to 10917 states and 15277 transitions. [2021-12-06 19:57:24,335 INFO L78 Accepts]: Start accepts. Automaton has 10917 states and 15277 transitions. Word has length 199 [2021-12-06 19:57:24,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:57:24,335 INFO L470 AbstractCegarLoop]: Abstraction has 10917 states and 15277 transitions. [2021-12-06 19:57:24,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (23), 8 states have call predecessors, (23), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 19:57:24,335 INFO L276 IsEmpty]: Start isEmpty. Operand 10917 states and 15277 transitions. [2021-12-06 19:57:24,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-12-06 19:57:24,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:57:24,341 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:57:24,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 19:57:24,341 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:57:24,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:57:24,341 INFO L85 PathProgramCache]: Analyzing trace with hash 6318164, now seen corresponding path program 1 times [2021-12-06 19:57:24,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:57:24,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948094198] [2021-12-06 19:57:24,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:57:24,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:57:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:57:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:57:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:57:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:57:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:57:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:57:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 19:57:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:57:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:57:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 19:57:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 19:57:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 19:57:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 19:57:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:57:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 19:57:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 19:57:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-06 19:57:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 19:57:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-06 19:57:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:57:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 19:57:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-06 19:57:24,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:57:24,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948094198] [2021-12-06 19:57:24,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948094198] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:57:24,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243277754] [2021-12-06 19:57:24,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:57:24,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:57:24,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:57:24,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:57:24,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:57:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:25,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 19:57:25,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:57:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-06 19:57:25,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:57:25,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243277754] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:57:25,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:57:25,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-12-06 19:57:25,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522737413] [2021-12-06 19:57:25,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:57:25,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:57:25,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:57:25,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:57:25,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:57:25,371 INFO L87 Difference]: Start difference. First operand 10917 states and 15277 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 19:57:25,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:57:25,755 INFO L93 Difference]: Finished difference Result 11475 states and 15990 transitions. [2021-12-06 19:57:25,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:57:25,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 207 [2021-12-06 19:57:25,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:57:25,781 INFO L225 Difference]: With dead ends: 11475 [2021-12-06 19:57:25,781 INFO L226 Difference]: Without dead ends: 10764 [2021-12-06 19:57:25,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:57:25,787 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 9 mSDsluCounter, 6493 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8119 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:57:25,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 8119 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:57:25,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10764 states. [2021-12-06 19:57:26,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10764 to 10748. [2021-12-06 19:57:26,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10748 states, 8554 states have (on average 1.3895253682487725) internal successors, (11886), 8675 states have internal predecessors, (11886), 1560 states have call successors, (1560), 607 states have call predecessors, (1560), 633 states have return successors, (1606), 1587 states have call predecessors, (1606), 1556 states have call successors, (1606) [2021-12-06 19:57:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10748 states to 10748 states and 15052 transitions. [2021-12-06 19:57:26,240 INFO L78 Accepts]: Start accepts. Automaton has 10748 states and 15052 transitions. Word has length 207 [2021-12-06 19:57:26,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:57:26,240 INFO L470 AbstractCegarLoop]: Abstraction has 10748 states and 15052 transitions. [2021-12-06 19:57:26,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 19:57:26,240 INFO L276 IsEmpty]: Start isEmpty. Operand 10748 states and 15052 transitions. [2021-12-06 19:57:26,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-12-06 19:57:26,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:57:26,249 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:57:26,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 19:57:26,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dec09b6-2211-412d-9226-1fcac64da090/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:57:26,451 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:57:26,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:57:26,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1585762242, now seen corresponding path program 1 times [2021-12-06 19:57:26,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:57:26,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877063537] [2021-12-06 19:57:26,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:57:26,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:57:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:57:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:57:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:57:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:57:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:57:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:57:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 19:57:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:57:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:57:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 19:57:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 19:57:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 19:57:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 19:57:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:57:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:57:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:57:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:57:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 19:57:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:57:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 19:57:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:57:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 19:57:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:57:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 19:57:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 19:57:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 19:57:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 19:57:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 19:57:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:57:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 19:57:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-06 19:57:26,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:57:26,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877063537] [2021-12-06 19:57:26,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877063537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:57:26,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:57:26,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 19:57:26,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105532090] [2021-12-06 19:57:26,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:57:26,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 19:57:26,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:57:26,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 19:57:26,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:57:26,941 INFO L87 Difference]: Start difference. First operand 10748 states and 15052 transitions. Second operand has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 5 states have internal predecessors, (164), 2 states have call successors, (29), 7 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-06 19:57:34,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:57:36,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:57:38,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:57:40,262 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:57:42,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:57:44,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:57:46,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:57:52,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:57:54,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:57:56,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:57:59,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:58:01,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:58:03,174 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:58:04,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:58:07,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:58:09,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:58:09,661 INFO L93 Difference]: Finished difference Result 16799 states and 23699 transitions. [2021-12-06 19:58:09,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:58:09,662 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 5 states have internal predecessors, (164), 2 states have call successors, (29), 7 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 256 [2021-12-06 19:58:09,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:58:09,696 INFO L225 Difference]: With dead ends: 16799 [2021-12-06 19:58:09,696 INFO L226 Difference]: Without dead ends: 11636 [2021-12-06 19:58:09,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:58:09,712 INFO L933 BasicCegarLoop]: 1456 mSDtfsCounter, 1408 mSDsluCounter, 6187 mSDsCounter, 0 mSdLazyCounter, 4366 mSolverCounterSat, 364 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 7643 SdHoareTripleChecker+Invalid, 4741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 4366 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:58:09,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 7643 Invalid, 4741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 4366 Invalid, 11 Unknown, 0 Unchecked, 42.1s Time] [2021-12-06 19:58:09,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11636 states. [2021-12-06 19:58:10,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11636 to 10744. [2021-12-06 19:58:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10744 states, 8550 states have (on average 1.3892397660818714) internal successors, (11878), 8671 states have internal predecessors, (11878), 1560 states have call successors, (1560), 607 states have call predecessors, (1560), 633 states have return successors, (1606), 1587 states have call predecessors, (1606), 1556 states have call successors, (1606) [2021-12-06 19:58:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10744 states to 10744 states and 15044 transitions. [2021-12-06 19:58:10,199 INFO L78 Accepts]: Start accepts. Automaton has 10744 states and 15044 transitions. Word has length 256 [2021-12-06 19:58:10,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:58:10,200 INFO L470 AbstractCegarLoop]: Abstraction has 10744 states and 15044 transitions. [2021-12-06 19:58:10,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 5 states have internal predecessors, (164), 2 states have call successors, (29), 7 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-06 19:58:10,200 INFO L276 IsEmpty]: Start isEmpty. Operand 10744 states and 15044 transitions. [2021-12-06 19:58:10,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-12-06 19:58:10,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:58:10,209 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:58:10,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 19:58:10,209 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:58:10,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:58:10,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1305102105, now seen corresponding path program 1 times [2021-12-06 19:58:10,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:58:10,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628699551] [2021-12-06 19:58:10,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:58:10,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:58:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:58:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:58:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:58:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:58:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:58:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:58:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 19:58:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:58:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:58:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 19:58:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 19:58:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 19:58:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 19:58:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:58:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:58:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:58:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:58:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 19:58:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:58:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 19:58:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:58:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 19:58:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:58:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:58:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 19:58:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 19:58:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 19:58:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 19:58:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:58:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:58:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:10,687 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-06 19:58:10,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:58:10,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628699551] [2021-12-06 19:58:10,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628699551] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:58:10,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:58:10,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 19:58:10,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796097640] [2021-12-06 19:58:10,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:58:10,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 19:58:10,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:58:10,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 19:58:10,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:58:10,688 INFO L87 Difference]: Start difference. First operand 10744 states and 15044 transitions. Second operand has 11 states, 11 states have (on average 15.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (29), 7 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-06 19:58:17,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:58:19,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:58:21,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:58:23,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:58:25,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:58:27,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:58:35,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:58:39,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:58:41,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:58:41,019 INFO L93 Difference]: Finished difference Result 11882 states and 16647 transitions. [2021-12-06 19:58:41,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:58:41,020 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (29), 7 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 257 [2021-12-06 19:58:41,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:58:41,021 INFO L225 Difference]: With dead ends: 11882 [2021-12-06 19:58:41,021 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 19:58:41,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:58:41,036 INFO L933 BasicCegarLoop]: 1439 mSDtfsCounter, 1487 mSDsluCounter, 5977 mSDsCounter, 0 mSdLazyCounter, 4335 mSolverCounterSat, 390 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 7416 SdHoareTripleChecker+Invalid, 4733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 4335 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:58:41,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1604 Valid, 7416 Invalid, 4733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 4335 Invalid, 8 Unknown, 0 Unchecked, 29.9s Time] [2021-12-06 19:58:41,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 19:58:41,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 19:58:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:58:41,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 19:58:41,039 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 257 [2021-12-06 19:58:41,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:58:41,039 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 19:58:41,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (29), 7 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-06 19:58:41,039 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 19:58:41,039 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 19:58:41,041 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 19:58:41,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 19:58:41,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 19:59:36,995 WARN L227 SmtUtils]: Spent 55.17s on a formula simplification that was a NOOP. DAG size: 91 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-06 20:00:36,034 WARN L227 SmtUtils]: Spent 59.04s on a formula simplification that was a NOOP. DAG size: 93 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)