./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a --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 389f662f7096bd36438270dc54f296be4073de8eeb864b893c17044d6fb4cc06 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 09:07:08,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:07:08,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:07:09,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:07:09,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:07:09,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:07:09,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:07:09,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:07:09,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:07:09,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:07:09,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:07:09,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:07:09,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:07:09,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:07:09,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:07:09,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:07:09,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:07:09,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:07:09,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:07:09,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:07:09,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:07:09,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:07:09,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:07:09,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:07:09,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:07:09,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:07:09,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:07:09,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:07:09,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:07:09,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:07:09,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:07:09,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:07:09,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:07:09,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:07:09,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:07:09,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:07:09,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:07:09,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:07:09,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:07:09,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:07:09,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:07:09,108 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-21 09:07:09,146 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:07:09,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:07:09,148 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:07:09,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:07:09,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:07:09,149 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:07:09,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:07:09,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:07:09,150 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:07:09,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:07:09,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:07:09,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:07:09,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:07:09,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:07:09,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:07:09,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:07:09,154 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:07:09,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:07:09,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:07:09,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:07:09,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:07:09,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:07:09,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:07:09,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:07:09,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:07:09,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:07:09,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:07:09,157 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:07:09,157 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:07:09,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:07:09,158 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_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 389f662f7096bd36438270dc54f296be4073de8eeb864b893c17044d6fb4cc06 [2022-11-21 09:07:09,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:07:09,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:07:09,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:07:09,509 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:07:09,509 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:07:09,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2022-11-21 09:07:12,556 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:07:13,207 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:07:13,207 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2022-11-21 09:07:13,276 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/data/63833aa6d/5ad5da0ace5e4e90aff2f4e605ba26e4/FLAGb0364cdc4 [2022-11-21 09:07:13,291 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/data/63833aa6d/5ad5da0ace5e4e90aff2f4e605ba26e4 [2022-11-21 09:07:13,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:07:13,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:07:13,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:07:13,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:07:13,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:07:13,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:07:13" (1/1) ... [2022-11-21 09:07:13,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@543861d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:13, skipping insertion in model container [2022-11-21 09:07:13,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:07:13" (1/1) ... [2022-11-21 09:07:13,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:07:13,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:07:14,247 WARN L237 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_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i[163507,163520] [2022-11-21 09:07:14,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:07:14,634 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:07:14,896 WARN L237 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_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i[163507,163520] [2022-11-21 09:07:15,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:07:15,149 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:07:15,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:15 WrapperNode [2022-11-21 09:07:15,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:07:15,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:07:15,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:07:15,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:07:15,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:15" (1/1) ... [2022-11-21 09:07:15,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:15" (1/1) ... [2022-11-21 09:07:15,340 INFO L138 Inliner]: procedures = 176, calls = 456, calls flagged for inlining = 92, calls inlined = 85, statements flattened = 1777 [2022-11-21 09:07:15,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:07:15,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:07:15,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:07:15,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:07:15,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:15" (1/1) ... [2022-11-21 09:07:15,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:15" (1/1) ... [2022-11-21 09:07:15,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:15" (1/1) ... [2022-11-21 09:07:15,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:15" (1/1) ... [2022-11-21 09:07:15,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:15" (1/1) ... [2022-11-21 09:07:15,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:15" (1/1) ... [2022-11-21 09:07:15,447 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:15" (1/1) ... [2022-11-21 09:07:15,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:15" (1/1) ... [2022-11-21 09:07:15,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:07:15,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:07:15,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:07:15,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:07:15,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:15" (1/1) ... [2022-11-21 09:07:15,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:07:15,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:07:15,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:07:15,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:07:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-21 09:07:15,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-21 09:07:15,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_15 [2022-11-21 09:07:15,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_15 [2022-11-21 09:07:15,564 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_poll [2022-11-21 09:07:15,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_poll [2022-11-21 09:07:15,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-21 09:07:15,565 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-21 09:07:15,566 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-21 09:07:15,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-21 09:07:15,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-21 09:07:15,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-21 09:07:15,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-21 09:07:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 09:07:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-11-21 09:07:15,568 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-11-21 09:07:15,568 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2022-11-21 09:07:15,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2022-11-21 09:07:15,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-21 09:07:15,568 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-21 09:07:15,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-21 09:07:15,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-21 09:07:15,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-21 09:07:15,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-21 09:07:15,569 INFO L130 BoogieDeclarations]: Found specification of procedure spin_trylock_bh [2022-11-21 09:07:15,569 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_trylock_bh [2022-11-21 09:07:15,570 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-21 09:07:15,570 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-21 09:07:15,570 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-11-21 09:07:15,570 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-11-21 09:07:15,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-21 09:07:15,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-21 09:07:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_synctty_ioctl [2022-11-21 09:07:15,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_synctty_ioctl [2022-11-21 09:07:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-21 09:07:15,572 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-21 09:07:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 09:07:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-21 09:07:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-21 09:07:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-11-21 09:07:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-11-21 09:07:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_close [2022-11-21 09:07:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_close [2022-11-21 09:07:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-21 09:07:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-21 09:07:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-21 09:07:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-21 09:07:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_print_buffer [2022-11-21 09:07:15,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_print_buffer [2022-11-21 09:07:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-21 09:07:15,576 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-21 09:07:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 09:07:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-21 09:07:15,577 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-21 09:07:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-21 09:07:15,577 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-21 09:07:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:07:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 09:07:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 09:07:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-21 09:07:15,579 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-21 09:07:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-21 09:07:15,580 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-21 09:07:15,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 09:07:15,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-21 09:07:15,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-21 09:07:15,580 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-11-21 09:07:15,581 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-11-21 09:07:15,581 INFO L130 BoogieDeclarations]: Found specification of procedure sp_put [2022-11-21 09:07:15,581 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_put [2022-11-21 09:07:15,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 09:07:15,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 09:07:15,581 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-11-21 09:07:15,582 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-11-21 09:07:15,582 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_hangup [2022-11-21 09:07:15,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_hangup [2022-11-21 09:07:15,582 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-21 09:07:15,582 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-21 09:07:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-21 09:07:15,583 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-21 09:07:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure sp_get [2022-11-21 09:07:15,583 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_get [2022-11-21 09:07:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-21 09:07:15,584 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-21 09:07:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 09:07:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-21 09:07:15,584 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-21 09:07:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-21 09:07:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-21 09:07:15,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-21 09:07:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-21 09:07:15,585 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-21 09:07:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:07:15,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:07:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_push [2022-11-21 09:07:15,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_push [2022-11-21 09:07:16,212 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:07:16,215 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:07:16,301 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-21 09:07:17,823 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:07:17,849 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:07:17,850 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 09:07:17,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:07:17 BoogieIcfgContainer [2022-11-21 09:07:17,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:07:17,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:07:17,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:07:17,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:07:17,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:07:13" (1/3) ... [2022-11-21 09:07:17,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7373b8c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:07:17, skipping insertion in model container [2022-11-21 09:07:17,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:15" (2/3) ... [2022-11-21 09:07:17,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7373b8c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:07:17, skipping insertion in model container [2022-11-21 09:07:17,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:07:17" (3/3) ... [2022-11-21 09:07:17,870 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2022-11-21 09:07:17,893 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:07:17,894 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 09:07:17,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:07:17,973 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6206abf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:07:17,973 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 09:07:17,983 INFO L276 IsEmpty]: Start isEmpty. Operand has 644 states, 483 states have (on average 1.391304347826087) internal successors, (672), 499 states have internal predecessors, (672), 120 states have call successors, (120), 40 states have call predecessors, (120), 39 states have return successors, (116), 114 states have call predecessors, (116), 116 states have call successors, (116) [2022-11-21 09:07:18,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-21 09:07:18,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:07:18,003 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:07:18,004 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:07:18,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:07:18,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1758611482, now seen corresponding path program 1 times [2022-11-21 09:07:18,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:07:18,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178634871] [2022-11-21 09:07:18,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:07:18,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:07:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:18,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:07:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:18,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:07:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:18,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:07:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:18,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 09:07:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:18,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 09:07:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:18,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 09:07:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:18,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 09:07:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:18,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 09:07:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:18,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:07:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:18,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:07:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-21 09:07:18,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:07:18,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178634871] [2022-11-21 09:07:18,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178634871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:07:18,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:07:18,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 09:07:18,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574140374] [2022-11-21 09:07:18,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:07:18,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:07:18,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:07:18,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:07:18,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:07:18,934 INFO L87 Difference]: Start difference. First operand has 644 states, 483 states have (on average 1.391304347826087) internal successors, (672), 499 states have internal predecessors, (672), 120 states have call successors, (120), 40 states have call predecessors, (120), 39 states have return successors, (116), 114 states have call predecessors, (116), 116 states have call successors, (116) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 09:07:21,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:07:21,553 INFO L93 Difference]: Finished difference Result 2033 states and 2996 transitions. [2022-11-21 09:07:21,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:07:21,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 78 [2022-11-21 09:07:21,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:07:21,584 INFO L225 Difference]: With dead ends: 2033 [2022-11-21 09:07:21,585 INFO L226 Difference]: Without dead ends: 1378 [2022-11-21 09:07:21,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:07:21,598 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 1262 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:07:21,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 1720 Invalid, 1292 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [313 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-21 09:07:21,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2022-11-21 09:07:21,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1222. [2022-11-21 09:07:21,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 926 states have (on average 1.3736501079913608) internal successors, (1272), 946 states have internal predecessors, (1272), 219 states have call successors, (219), 77 states have call predecessors, (219), 76 states have return successors, (218), 214 states have call predecessors, (218), 218 states have call successors, (218) [2022-11-21 09:07:21,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1709 transitions. [2022-11-21 09:07:21,808 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1709 transitions. Word has length 78 [2022-11-21 09:07:21,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:07:21,808 INFO L495 AbstractCegarLoop]: Abstraction has 1222 states and 1709 transitions. [2022-11-21 09:07:21,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 09:07:21,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1709 transitions. [2022-11-21 09:07:21,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-21 09:07:21,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:07:21,814 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:07:21,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 09:07:21,815 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:07:21,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:07:21,821 INFO L85 PathProgramCache]: Analyzing trace with hash -152487068, now seen corresponding path program 1 times [2022-11-21 09:07:21,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:07:21,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147652639] [2022-11-21 09:07:21,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:07:21,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:07:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:22,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:07:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:22,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:07:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:22,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:07:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:22,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 09:07:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:22,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 09:07:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:22,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 09:07:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:22,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 09:07:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:22,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 09:07:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:22,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:07:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:22,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:07:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-21 09:07:22,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:07:22,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147652639] [2022-11-21 09:07:22,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147652639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:07:22,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:07:22,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 09:07:22,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587352447] [2022-11-21 09:07:22,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:07:22,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:07:22,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:07:22,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:07:22,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:07:22,262 INFO L87 Difference]: Start difference. First operand 1222 states and 1709 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 09:07:25,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:07:25,430 INFO L93 Difference]: Finished difference Result 3917 states and 5611 transitions. [2022-11-21 09:07:25,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:07:25,430 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 82 [2022-11-21 09:07:25,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:07:25,454 INFO L225 Difference]: With dead ends: 3917 [2022-11-21 09:07:25,454 INFO L226 Difference]: Without dead ends: 2713 [2022-11-21 09:07:25,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-21 09:07:25,465 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 1283 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 2220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-21 09:07:25,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1374 Valid, 2933 Invalid, 2220 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [308 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-21 09:07:25,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2022-11-21 09:07:25,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2509. [2022-11-21 09:07:25,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 1903 states have (on average 1.3751970572779821) internal successors, (2617), 1951 states have internal predecessors, (2617), 443 states have call successors, (443), 153 states have call predecessors, (443), 162 states have return successors, (500), 438 states have call predecessors, (500), 442 states have call successors, (500) [2022-11-21 09:07:25,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3560 transitions. [2022-11-21 09:07:25,687 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3560 transitions. Word has length 82 [2022-11-21 09:07:25,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:07:25,690 INFO L495 AbstractCegarLoop]: Abstraction has 2509 states and 3560 transitions. [2022-11-21 09:07:25,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 09:07:25,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3560 transitions. [2022-11-21 09:07:25,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-21 09:07:25,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:07:25,705 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2022-11-21 09:07:25,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 09:07:25,706 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:07:25,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:07:25,707 INFO L85 PathProgramCache]: Analyzing trace with hash -950375967, now seen corresponding path program 1 times [2022-11-21 09:07:25,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:07:25,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717587988] [2022-11-21 09:07:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:07:25,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:07:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:25,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:07:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:25,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:07:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:25,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:07:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:25,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 09:07:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:25,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 09:07:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:25,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 09:07:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:25,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 09:07:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:25,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 09:07:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:25,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:07:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:25,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:07:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:25,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 09:07:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:26,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 09:07:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:26,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:07:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:26,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:07:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:26,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 09:07:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-21 09:07:26,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:07:26,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717587988] [2022-11-21 09:07:26,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717587988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:07:26,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:07:26,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:07:26,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615022288] [2022-11-21 09:07:26,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:07:26,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:07:26,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:07:26,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:07:26,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:07:26,097 INFO L87 Difference]: Start difference. First operand 2509 states and 3560 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 09:07:29,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:07:29,474 INFO L93 Difference]: Finished difference Result 6827 states and 9761 transitions. [2022-11-21 09:07:29,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 09:07:29,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2022-11-21 09:07:29,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:07:29,499 INFO L225 Difference]: With dead ends: 6827 [2022-11-21 09:07:29,499 INFO L226 Difference]: Without dead ends: 4342 [2022-11-21 09:07:29,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-21 09:07:29,516 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 1658 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 750 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 2268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-21 09:07:29,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 2262 Invalid, 2268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [750 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-21 09:07:29,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4342 states. [2022-11-21 09:07:29,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4342 to 3931. [2022-11-21 09:07:29,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3931 states, 2993 states have (on average 1.3742064817908453) internal successors, (4113), 3055 states have internal predecessors, (4113), 659 states have call successors, (659), 249 states have call predecessors, (659), 278 states have return successors, (777), 662 states have call predecessors, (777), 658 states have call successors, (777) [2022-11-21 09:07:29,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3931 states to 3931 states and 5549 transitions. [2022-11-21 09:07:29,790 INFO L78 Accepts]: Start accepts. Automaton has 3931 states and 5549 transitions. Word has length 128 [2022-11-21 09:07:29,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:07:29,792 INFO L495 AbstractCegarLoop]: Abstraction has 3931 states and 5549 transitions. [2022-11-21 09:07:29,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 09:07:29,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3931 states and 5549 transitions. [2022-11-21 09:07:29,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-21 09:07:29,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:07:29,806 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2022-11-21 09:07:29,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 09:07:29,809 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:07:29,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:07:29,810 INFO L85 PathProgramCache]: Analyzing trace with hash -944835305, now seen corresponding path program 1 times [2022-11-21 09:07:29,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:07:29,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097805298] [2022-11-21 09:07:29,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:07:29,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:07:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:29,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:07:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:29,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:07:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:29,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:07:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:29,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 09:07:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:29,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 09:07:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:30,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 09:07:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:30,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 09:07:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:30,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 09:07:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:30,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:07:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:30,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:07:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:30,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 09:07:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:30,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:07:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:30,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:07:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:30,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 09:07:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:30,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:07:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:30,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 09:07:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:30,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 09:07:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:30,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-21 09:07:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-21 09:07:30,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:07:30,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097805298] [2022-11-21 09:07:30,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097805298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:07:30,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:07:30,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:07:30,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411874309] [2022-11-21 09:07:30,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:07:30,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:07:30,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:07:30,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:07:30,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:07:30,212 INFO L87 Difference]: Start difference. First operand 3931 states and 5549 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-21 09:07:33,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:07:33,654 INFO L93 Difference]: Finished difference Result 9990 states and 14092 transitions. [2022-11-21 09:07:33,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:07:33,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 149 [2022-11-21 09:07:33,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:07:33,692 INFO L225 Difference]: With dead ends: 9990 [2022-11-21 09:07:33,692 INFO L226 Difference]: Without dead ends: 6083 [2022-11-21 09:07:33,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-21 09:07:33,708 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 1064 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-21 09:07:33,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 2405 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-21 09:07:33,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6083 states. [2022-11-21 09:07:34,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6083 to 5590. [2022-11-21 09:07:34,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 4255 states have (on average 1.3635722679200941) internal successors, (5802), 4361 states have internal predecessors, (5802), 906 states have call successors, (906), 383 states have call predecessors, (906), 428 states have return successors, (1074), 909 states have call predecessors, (1074), 905 states have call successors, (1074) [2022-11-21 09:07:34,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 7782 transitions. [2022-11-21 09:07:34,103 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 7782 transitions. Word has length 149 [2022-11-21 09:07:34,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:07:34,104 INFO L495 AbstractCegarLoop]: Abstraction has 5590 states and 7782 transitions. [2022-11-21 09:07:34,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-21 09:07:34,104 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 7782 transitions. [2022-11-21 09:07:34,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-21 09:07:34,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:07:34,116 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 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] [2022-11-21 09:07:34,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 09:07:34,116 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:07:34,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:07:34,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1643009203, now seen corresponding path program 1 times [2022-11-21 09:07:34,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:07:34,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054745412] [2022-11-21 09:07:34,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:07:34,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:07:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:34,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:07:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:34,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:07:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:34,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:07:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:34,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 09:07:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:34,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 09:07:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:34,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 09:07:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:34,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 09:07:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:34,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 09:07:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:34,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:07:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:34,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:07:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:34,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 09:07:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:34,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 09:07:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:34,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-21 09:07:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:34,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 09:07:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:34,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:07:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:34,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:07:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:34,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 09:07:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-21 09:07:34,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:07:34,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054745412] [2022-11-21 09:07:34,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054745412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:07:34,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:07:34,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:07:34,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438440596] [2022-11-21 09:07:34,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:07:34,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:07:34,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:07:34,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:07:34,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:07:34,453 INFO L87 Difference]: Start difference. First operand 5590 states and 7782 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 09:07:39,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:07:39,084 INFO L93 Difference]: Finished difference Result 14712 states and 20604 transitions. [2022-11-21 09:07:39,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 09:07:39,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 151 [2022-11-21 09:07:39,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:07:39,131 INFO L225 Difference]: With dead ends: 14712 [2022-11-21 09:07:39,132 INFO L226 Difference]: Without dead ends: 9157 [2022-11-21 09:07:39,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-21 09:07:39,149 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 1658 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 2691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-21 09:07:39,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1737 Valid, 2678 Invalid, 2691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 2077 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-21 09:07:39,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9157 states. [2022-11-21 09:07:39,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9157 to 8330. [2022-11-21 09:07:39,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8330 states, 6415 states have (on average 1.3624318004676539) internal successors, (8740), 6559 states have internal predecessors, (8740), 1254 states have call successors, (1254), 587 states have call predecessors, (1254), 660 states have return successors, (1489), 1267 states have call predecessors, (1489), 1253 states have call successors, (1489) [2022-11-21 09:07:39,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8330 states to 8330 states and 11483 transitions. [2022-11-21 09:07:39,717 INFO L78 Accepts]: Start accepts. Automaton has 8330 states and 11483 transitions. Word has length 151 [2022-11-21 09:07:39,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:07:39,718 INFO L495 AbstractCegarLoop]: Abstraction has 8330 states and 11483 transitions. [2022-11-21 09:07:39,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 09:07:39,718 INFO L276 IsEmpty]: Start isEmpty. Operand 8330 states and 11483 transitions. [2022-11-21 09:07:39,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-21 09:07:39,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:07:39,732 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 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] [2022-11-21 09:07:39,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 09:07:39,733 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:07:39,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:07:39,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1373098194, now seen corresponding path program 1 times [2022-11-21 09:07:39,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:07:39,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352881054] [2022-11-21 09:07:39,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:07:39,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:07:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:39,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:07:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:39,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:07:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:39,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:07:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:39,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 09:07:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:39,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 09:07:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:39,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 09:07:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:39,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 09:07:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:39,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 09:07:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:39,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:07:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:39,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:07:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:39,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 09:07:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:39,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 09:07:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:39,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 09:07:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:39,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:07:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:40,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 09:07:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:40,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:07:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:40,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:07:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:40,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 09:07:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:40,082 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-11-21 09:07:40,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:07:40,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352881054] [2022-11-21 09:07:40,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352881054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:07:40,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:07:40,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:07:40,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493635331] [2022-11-21 09:07:40,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:07:40,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:07:40,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:07:40,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:07:40,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:07:40,096 INFO L87 Difference]: Start difference. First operand 8330 states and 11483 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-21 09:07:43,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:07:43,001 INFO L93 Difference]: Finished difference Result 13560 states and 19023 transitions. [2022-11-21 09:07:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:07:43,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 156 [2022-11-21 09:07:43,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:07:43,052 INFO L225 Difference]: With dead ends: 13560 [2022-11-21 09:07:43,052 INFO L226 Difference]: Without dead ends: 9164 [2022-11-21 09:07:43,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-21 09:07:43,070 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 543 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 2614 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:07:43,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 2614 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-21 09:07:43,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9164 states. [2022-11-21 09:07:43,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9164 to 8350. [2022-11-21 09:07:43,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8350 states, 6435 states have (on average 1.3613053613053614) internal successors, (8760), 6579 states have internal predecessors, (8760), 1254 states have call successors, (1254), 587 states have call predecessors, (1254), 660 states have return successors, (1489), 1267 states have call predecessors, (1489), 1253 states have call successors, (1489) [2022-11-21 09:07:43,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8350 states to 8350 states and 11503 transitions. [2022-11-21 09:07:43,652 INFO L78 Accepts]: Start accepts. Automaton has 8350 states and 11503 transitions. Word has length 156 [2022-11-21 09:07:43,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:07:43,653 INFO L495 AbstractCegarLoop]: Abstraction has 8350 states and 11503 transitions. [2022-11-21 09:07:43,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-21 09:07:43,653 INFO L276 IsEmpty]: Start isEmpty. Operand 8350 states and 11503 transitions. [2022-11-21 09:07:43,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-21 09:07:43,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:07:43,668 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 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] [2022-11-21 09:07:43,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 09:07:43,668 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:07:43,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:07:43,669 INFO L85 PathProgramCache]: Analyzing trace with hash 554198863, now seen corresponding path program 1 times [2022-11-21 09:07:43,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:07:43,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616465613] [2022-11-21 09:07:43,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:07:43,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:07:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:44,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:07:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:44,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:07:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:44,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:07:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:44,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 09:07:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:44,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 09:07:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:44,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 09:07:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:44,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 09:07:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:44,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 09:07:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:44,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:07:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:44,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:07:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:44,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 09:07:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:44,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 09:07:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:44,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 09:07:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:44,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:07:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:44,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 09:07:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:44,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:07:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:44,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:07:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:44,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-21 09:07:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:44,867 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-11-21 09:07:44,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:07:44,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616465613] [2022-11-21 09:07:44,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616465613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:07:44,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:07:44,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 09:07:44,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942553943] [2022-11-21 09:07:44,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:07:44,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 09:07:44,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:07:44,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 09:07:44,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-21 09:07:44,870 INFO L87 Difference]: Start difference. First operand 8350 states and 11503 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 8 states have internal predecessors, (87), 5 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-21 09:07:50,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:07:50,888 INFO L93 Difference]: Finished difference Result 18695 states and 25902 transitions. [2022-11-21 09:07:50,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 09:07:50,888 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 8 states have internal predecessors, (87), 5 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) Word has length 158 [2022-11-21 09:07:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:07:50,935 INFO L225 Difference]: With dead ends: 18695 [2022-11-21 09:07:50,936 INFO L226 Difference]: Without dead ends: 10380 [2022-11-21 09:07:50,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2022-11-21 09:07:50,962 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 3281 mSDsluCounter, 2713 mSDsCounter, 0 mSdLazyCounter, 3697 mSolverCounterSat, 1617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3370 SdHoareTripleChecker+Valid, 3363 SdHoareTripleChecker+Invalid, 5314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1617 IncrementalHoareTripleChecker+Valid, 3697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:07:50,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3370 Valid, 3363 Invalid, 5314 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1617 Valid, 3697 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-21 09:07:50,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10380 states. [2022-11-21 09:07:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10380 to 8726. [2022-11-21 09:07:51,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8726 states, 6679 states have (on average 1.3505015720916305) internal successors, (9020), 6821 states have internal predecessors, (9020), 1346 states have call successors, (1346), 665 states have call predecessors, (1346), 700 states have return successors, (1519), 1331 states have call predecessors, (1519), 1345 states have call successors, (1519) [2022-11-21 09:07:51,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8726 states to 8726 states and 11885 transitions. [2022-11-21 09:07:51,490 INFO L78 Accepts]: Start accepts. Automaton has 8726 states and 11885 transitions. Word has length 158 [2022-11-21 09:07:51,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:07:51,490 INFO L495 AbstractCegarLoop]: Abstraction has 8726 states and 11885 transitions. [2022-11-21 09:07:51,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 8 states have internal predecessors, (87), 5 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-21 09:07:51,491 INFO L276 IsEmpty]: Start isEmpty. Operand 8726 states and 11885 transitions. [2022-11-21 09:07:51,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-21 09:07:51,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:07:51,509 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 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] [2022-11-21 09:07:51,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 09:07:51,509 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:07:51,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:07:51,510 INFO L85 PathProgramCache]: Analyzing trace with hash -3224619, now seen corresponding path program 1 times [2022-11-21 09:07:51,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:07:51,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238720592] [2022-11-21 09:07:51,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:07:51,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:07:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:07:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:07:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:07:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 09:07:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 09:07:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 09:07:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 09:07:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 09:07:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:07:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:07:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 09:07:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 09:07:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 09:07:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:07:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 09:07:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 09:07:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:07:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:07:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-21 09:07:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:07:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-21 09:07:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:07:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:52,494 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-11-21 09:07:52,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:07:52,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238720592] [2022-11-21 09:07:52,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238720592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:07:52,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:07:52,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 09:07:52,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515414349] [2022-11-21 09:07:52,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:07:52,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:07:52,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:07:52,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:07:52,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:07:52,497 INFO L87 Difference]: Start difference. First operand 8726 states and 11885 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-21 09:07:55,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:07:55,725 INFO L93 Difference]: Finished difference Result 18475 states and 25394 transitions. [2022-11-21 09:07:55,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:07:55,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 193 [2022-11-21 09:07:55,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:07:55,765 INFO L225 Difference]: With dead ends: 18475 [2022-11-21 09:07:55,765 INFO L226 Difference]: Without dead ends: 9784 [2022-11-21 09:07:55,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-21 09:07:55,792 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 435 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 1818 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-21 09:07:55,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 3008 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1818 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-21 09:07:55,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9784 states. [2022-11-21 09:07:56,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9784 to 8790. [2022-11-21 09:07:56,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8790 states, 6727 states have (on average 1.3480005946187008) internal successors, (9068), 6869 states have internal predecessors, (9068), 1346 states have call successors, (1346), 665 states have call predecessors, (1346), 716 states have return successors, (1543), 1347 states have call predecessors, (1543), 1345 states have call successors, (1543) [2022-11-21 09:07:56,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8790 states to 8790 states and 11957 transitions. [2022-11-21 09:07:56,564 INFO L78 Accepts]: Start accepts. Automaton has 8790 states and 11957 transitions. Word has length 193 [2022-11-21 09:07:56,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:07:56,565 INFO L495 AbstractCegarLoop]: Abstraction has 8790 states and 11957 transitions. [2022-11-21 09:07:56,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-21 09:07:56,566 INFO L276 IsEmpty]: Start isEmpty. Operand 8790 states and 11957 transitions. [2022-11-21 09:07:56,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-21 09:07:56,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:07:56,584 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 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] [2022-11-21 09:07:56,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 09:07:56,585 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:07:56,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:07:56,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1088928772, now seen corresponding path program 1 times [2022-11-21 09:07:56,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:07:56,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553461228] [2022-11-21 09:07:56,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:07:56,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:07:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:07:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:07:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:07:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 09:07:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 09:07:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 09:07:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 09:07:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 09:07:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:07:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:07:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 09:07:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 09:07:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 09:07:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-21 09:07:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-21 09:07:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:07:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:07:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-21 09:07:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:07:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:07:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:56,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:07:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:57,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-21 09:07:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:57,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:07:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:57,012 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-21 09:07:57,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:07:57,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553461228] [2022-11-21 09:07:57,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553461228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:07:57,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:07:57,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 09:07:57,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126504400] [2022-11-21 09:07:57,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:07:57,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:07:57,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:07:57,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:07:57,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:07:57,016 INFO L87 Difference]: Start difference. First operand 8790 states and 11957 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-21 09:08:01,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:08:01,179 INFO L93 Difference]: Finished difference Result 22136 states and 30222 transitions. [2022-11-21 09:08:01,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:08:01,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 215 [2022-11-21 09:08:01,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:08:01,238 INFO L225 Difference]: With dead ends: 22136 [2022-11-21 09:08:01,239 INFO L226 Difference]: Without dead ends: 13381 [2022-11-21 09:08:01,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-21 09:08:01,262 INFO L413 NwaCegarLoop]: 1046 mSDtfsCounter, 1167 mSDsluCounter, 2433 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:08:01,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 3479 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-21 09:08:01,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13381 states. [2022-11-21 09:08:01,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13381 to 8806. [2022-11-21 09:08:01,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8806 states, 6743 states have (on average 1.3471748479905086) internal successors, (9084), 6885 states have internal predecessors, (9084), 1346 states have call successors, (1346), 665 states have call predecessors, (1346), 716 states have return successors, (1543), 1347 states have call predecessors, (1543), 1345 states have call successors, (1543) [2022-11-21 09:08:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8806 states to 8806 states and 11973 transitions. [2022-11-21 09:08:01,976 INFO L78 Accepts]: Start accepts. Automaton has 8806 states and 11973 transitions. Word has length 215 [2022-11-21 09:08:01,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:08:01,977 INFO L495 AbstractCegarLoop]: Abstraction has 8806 states and 11973 transitions. [2022-11-21 09:08:01,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-21 09:08:01,977 INFO L276 IsEmpty]: Start isEmpty. Operand 8806 states and 11973 transitions. [2022-11-21 09:08:01,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-21 09:08:01,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:08:01,994 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 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] [2022-11-21 09:08:01,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 09:08:01,995 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:08:01,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:08:01,995 INFO L85 PathProgramCache]: Analyzing trace with hash 2069474836, now seen corresponding path program 1 times [2022-11-21 09:08:01,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:08:01,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220921510] [2022-11-21 09:08:01,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:08:01,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:08:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:02,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:08:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:02,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:08:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:02,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:08:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:02,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 09:08:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:02,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 09:08:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:02,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 09:08:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:02,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 09:08:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:02,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 09:08:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:02,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:08:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:02,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:08:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:02,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 09:08:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:02,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 09:08:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:02,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 09:08:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:02,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:02,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 09:08:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:02,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 09:08:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:03,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:03,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:03,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:08:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:03,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-21 09:08:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:03,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:03,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-21 09:08:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:03,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:03,287 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2022-11-21 09:08:03,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:08:03,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220921510] [2022-11-21 09:08:03,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220921510] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:08:03,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851790472] [2022-11-21 09:08:03,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:08:03,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:08:03,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:08:03,295 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:08:03,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 09:08:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:03,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 09:08:03,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:08:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 98 proven. 8 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-11-21 09:08:04,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:08:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-21 09:08:05,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851790472] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:08:05,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:08:05,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 20 [2022-11-21 09:08:05,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661706005] [2022-11-21 09:08:05,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:08:05,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 09:08:05,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:08:05,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 09:08:05,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-11-21 09:08:05,040 INFO L87 Difference]: Start difference. First operand 8806 states and 11973 transitions. Second operand has 20 states, 20 states have (on average 10.4) internal successors, (208), 17 states have internal predecessors, (208), 9 states have call successors, (57), 9 states have call predecessors, (57), 11 states have return successors, (44), 13 states have call predecessors, (44), 9 states have call successors, (44) [2022-11-21 09:08:17,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:08:17,501 INFO L93 Difference]: Finished difference Result 31956 states and 44216 transitions. [2022-11-21 09:08:17,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-21 09:08:17,503 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.4) internal successors, (208), 17 states have internal predecessors, (208), 9 states have call successors, (57), 9 states have call predecessors, (57), 11 states have return successors, (44), 13 states have call predecessors, (44), 9 states have call successors, (44) Word has length 200 [2022-11-21 09:08:17,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:08:17,722 INFO L225 Difference]: With dead ends: 31956 [2022-11-21 09:08:17,722 INFO L226 Difference]: Without dead ends: 27104 [2022-11-21 09:08:17,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 439 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=556, Invalid=1994, Unknown=0, NotChecked=0, Total=2550 [2022-11-21 09:08:17,742 INFO L413 NwaCegarLoop]: 1167 mSDtfsCounter, 9731 mSDsluCounter, 5835 mSDsCounter, 0 mSdLazyCounter, 8222 mSolverCounterSat, 4060 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10005 SdHoareTripleChecker+Valid, 7002 SdHoareTripleChecker+Invalid, 12282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4060 IncrementalHoareTripleChecker+Valid, 8222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-21 09:08:17,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10005 Valid, 7002 Invalid, 12282 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4060 Valid, 8222 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-11-21 09:08:17,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27104 states. [2022-11-21 09:08:19,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27104 to 24845. [2022-11-21 09:08:19,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24845 states, 18848 states have (on average 1.3417869269949065) internal successors, (25290), 19360 states have internal predecessors, (25290), 3884 states have call successors, (3884), 1849 states have call predecessors, (3884), 2112 states have return successors, (5009), 3909 states have call predecessors, (5009), 3883 states have call successors, (5009) [2022-11-21 09:08:19,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24845 states to 24845 states and 34183 transitions. [2022-11-21 09:08:19,281 INFO L78 Accepts]: Start accepts. Automaton has 24845 states and 34183 transitions. Word has length 200 [2022-11-21 09:08:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:08:19,282 INFO L495 AbstractCegarLoop]: Abstraction has 24845 states and 34183 transitions. [2022-11-21 09:08:19,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.4) internal successors, (208), 17 states have internal predecessors, (208), 9 states have call successors, (57), 9 states have call predecessors, (57), 11 states have return successors, (44), 13 states have call predecessors, (44), 9 states have call successors, (44) [2022-11-21 09:08:19,282 INFO L276 IsEmpty]: Start isEmpty. Operand 24845 states and 34183 transitions. [2022-11-21 09:08:19,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-21 09:08:19,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:08:19,298 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 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] [2022-11-21 09:08:19,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 09:08:19,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 09:08:19,507 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:08:19,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:08:19,508 INFO L85 PathProgramCache]: Analyzing trace with hash -872421549, now seen corresponding path program 1 times [2022-11-21 09:08:19,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:08:19,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243054899] [2022-11-21 09:08:19,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:08:19,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:08:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:08:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:08:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:08:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 09:08:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 09:08:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 09:08:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 09:08:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 09:08:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:08:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:08:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 09:08:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 09:08:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 09:08:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 09:08:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 09:08:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:08:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-21 09:08:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-21 09:08:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,919 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-21 09:08:19,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:08:19,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243054899] [2022-11-21 09:08:19,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243054899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:08:19,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:08:19,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:08:19,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000334276] [2022-11-21 09:08:19,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:08:19,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:08:19,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:08:19,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:08:19,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:08:19,922 INFO L87 Difference]: Start difference. First operand 24845 states and 34183 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-21 09:08:24,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:08:24,081 INFO L93 Difference]: Finished difference Result 47218 states and 65947 transitions. [2022-11-21 09:08:24,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:08:24,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 202 [2022-11-21 09:08:24,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:08:24,227 INFO L225 Difference]: With dead ends: 47218 [2022-11-21 09:08:24,228 INFO L226 Difference]: Without dead ends: 26319 [2022-11-21 09:08:24,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-21 09:08:24,284 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 459 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:08:24,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 2479 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-21 09:08:24,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26319 states. [2022-11-21 09:08:26,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26319 to 24829. [2022-11-21 09:08:26,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24829 states, 18832 states have (on average 1.3396346644010195) internal successors, (25228), 19344 states have internal predecessors, (25228), 3884 states have call successors, (3884), 1849 states have call predecessors, (3884), 2112 states have return successors, (4997), 3909 states have call predecessors, (4997), 3883 states have call successors, (4997) [2022-11-21 09:08:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24829 states to 24829 states and 34109 transitions. [2022-11-21 09:08:26,311 INFO L78 Accepts]: Start accepts. Automaton has 24829 states and 34109 transitions. Word has length 202 [2022-11-21 09:08:26,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:08:26,312 INFO L495 AbstractCegarLoop]: Abstraction has 24829 states and 34109 transitions. [2022-11-21 09:08:26,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-21 09:08:26,312 INFO L276 IsEmpty]: Start isEmpty. Operand 24829 states and 34109 transitions. [2022-11-21 09:08:26,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-21 09:08:26,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:08:26,337 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:08:26,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 09:08:26,338 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:08:26,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:08:26,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1114922220, now seen corresponding path program 1 times [2022-11-21 09:08:26,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:08:26,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551072117] [2022-11-21 09:08:26,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:08:26,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:08:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:08:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:08:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:08:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 09:08:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 09:08:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 09:08:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 09:08:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 09:08:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:08:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:08:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 09:08:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 09:08:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 09:08:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 09:08:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 09:08:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:08:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-21 09:08:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-21 09:08:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:27,228 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-21 09:08:27,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:08:27,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551072117] [2022-11-21 09:08:27,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551072117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:08:27,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:08:27,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:08:27,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650590967] [2022-11-21 09:08:27,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:08:27,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:08:27,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:08:27,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:08:27,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:08:27,231 INFO L87 Difference]: Start difference. First operand 24829 states and 34109 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-21 09:08:32,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:08:32,364 INFO L93 Difference]: Finished difference Result 66761 states and 96168 transitions. [2022-11-21 09:08:32,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:08:32,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 204 [2022-11-21 09:08:32,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:08:32,594 INFO L225 Difference]: With dead ends: 66761 [2022-11-21 09:08:32,595 INFO L226 Difference]: Without dead ends: 41967 [2022-11-21 09:08:32,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:08:32,680 INFO L413 NwaCegarLoop]: 1197 mSDtfsCounter, 1373 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 4201 SdHoareTripleChecker+Invalid, 2251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-21 09:08:32,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 4201 Invalid, 2251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 1819 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-21 09:08:32,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41967 states. [2022-11-21 09:08:35,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41967 to 24889. [2022-11-21 09:08:35,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24889 states, 18892 states have (on average 1.338556002540758) internal successors, (25288), 19404 states have internal predecessors, (25288), 3884 states have call successors, (3884), 1849 states have call predecessors, (3884), 2112 states have return successors, (4997), 3909 states have call predecessors, (4997), 3883 states have call successors, (4997) [2022-11-21 09:08:35,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24889 states to 24889 states and 34169 transitions. [2022-11-21 09:08:35,534 INFO L78 Accepts]: Start accepts. Automaton has 24889 states and 34169 transitions. Word has length 204 [2022-11-21 09:08:35,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:08:35,535 INFO L495 AbstractCegarLoop]: Abstraction has 24889 states and 34169 transitions. [2022-11-21 09:08:35,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-21 09:08:35,535 INFO L276 IsEmpty]: Start isEmpty. Operand 24889 states and 34169 transitions. [2022-11-21 09:08:35,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-21 09:08:35,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:08:35,552 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:08:35,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 09:08:35,553 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:08:35,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:08:35,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1099484298, now seen corresponding path program 1 times [2022-11-21 09:08:35,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:08:35,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559825780] [2022-11-21 09:08:35,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:08:35,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:08:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:08:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:08:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:08:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 09:08:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 09:08:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 09:08:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 09:08:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 09:08:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:08:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:08:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 09:08:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 09:08:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 09:08:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 09:08:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 09:08:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:08:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-21 09:08:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-21 09:08:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-21 09:08:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-21 09:08:36,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:08:36,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559825780] [2022-11-21 09:08:36,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559825780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:08:36,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:08:36,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 09:08:36,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574781582] [2022-11-21 09:08:36,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:08:36,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:08:36,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:08:36,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:08:36,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:08:36,378 INFO L87 Difference]: Start difference. First operand 24889 states and 34169 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-21 09:08:39,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:08:39,556 INFO L93 Difference]: Finished difference Result 38316 states and 52807 transitions. [2022-11-21 09:08:39,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:08:39,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 208 [2022-11-21 09:08:39,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:08:39,614 INFO L225 Difference]: With dead ends: 38316 [2022-11-21 09:08:39,614 INFO L226 Difference]: Without dead ends: 13432 [2022-11-21 09:08:39,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-21 09:08:39,661 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 664 mSDsluCounter, 2377 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 3006 SdHoareTripleChecker+Invalid, 2251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:08:39,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 3006 Invalid, 2251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-21 09:08:39,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13432 states. [2022-11-21 09:08:40,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13432 to 12493. [2022-11-21 09:08:40,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12493 states, 9477 states have (on average 1.3408251556399704) internal successors, (12707), 9738 states have internal predecessors, (12707), 1958 states have call successors, (1958), 926 states have call predecessors, (1958), 1057 states have return successors, (2524), 1965 states have call predecessors, (2524), 1957 states have call successors, (2524) [2022-11-21 09:08:40,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12493 states to 12493 states and 17189 transitions. [2022-11-21 09:08:40,925 INFO L78 Accepts]: Start accepts. Automaton has 12493 states and 17189 transitions. Word has length 208 [2022-11-21 09:08:40,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:08:40,925 INFO L495 AbstractCegarLoop]: Abstraction has 12493 states and 17189 transitions. [2022-11-21 09:08:40,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-21 09:08:40,926 INFO L276 IsEmpty]: Start isEmpty. Operand 12493 states and 17189 transitions. [2022-11-21 09:08:40,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-21 09:08:40,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:08:40,940 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:08:40,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 09:08:40,941 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:08:40,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:08:40,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1517373000, now seen corresponding path program 1 times [2022-11-21 09:08:40,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:08:40,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917358641] [2022-11-21 09:08:40,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:08:40,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:08:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:45,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:08:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:45,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:08:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:45,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:08:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:45,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 09:08:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:45,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 09:08:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:45,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 09:08:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:45,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 09:08:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:45,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 09:08:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:45,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:08:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:45,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:08:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:45,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 09:08:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:45,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 09:08:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:45,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 09:08:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:45,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:45,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 09:08:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:45,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 09:08:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:45,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:46,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:46,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:08:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:46,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-21 09:08:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:47,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:47,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-21 09:08:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:47,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-21 09:08:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:47,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:47,865 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 48 proven. 13 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-11-21 09:08:47,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:08:47,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917358641] [2022-11-21 09:08:47,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917358641] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:08:47,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551800165] [2022-11-21 09:08:47,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:08:47,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:08:47,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:08:47,871 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:08:47,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 09:08:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:48,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-21 09:08:48,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:08:49,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-21 09:08:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 118 proven. 8 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-11-21 09:08:50,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:08:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2022-11-21 09:08:52,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551800165] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 09:08:52,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:08:52,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [33, 19] total 61 [2022-11-21 09:08:52,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084313643] [2022-11-21 09:08:52,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:08:52,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 09:08:52,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:08:52,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 09:08:52,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=3458, Unknown=0, NotChecked=0, Total=3660 [2022-11-21 09:08:52,630 INFO L87 Difference]: Start difference. First operand 12493 states and 17189 transitions. Second operand has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 9 states have internal predecessors, (115), 2 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (23), 6 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-21 09:08:54,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:08:54,706 INFO L93 Difference]: Finished difference Result 29174 states and 41259 transitions. [2022-11-21 09:08:54,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 09:08:54,707 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 9 states have internal predecessors, (115), 2 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (23), 6 states have call predecessors, (23), 2 states have call successors, (23) Word has length 208 [2022-11-21 09:08:54,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:08:54,774 INFO L225 Difference]: With dead ends: 29174 [2022-11-21 09:08:54,775 INFO L226 Difference]: Without dead ends: 16731 [2022-11-21 09:08:54,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=210, Invalid=3696, Unknown=0, NotChecked=0, Total=3906 [2022-11-21 09:08:54,806 INFO L413 NwaCegarLoop]: 1362 mSDtfsCounter, 360 mSDsluCounter, 14490 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 15852 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:08:54,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 15852 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 09:08:54,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16731 states. [2022-11-21 09:08:56,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16731 to 12583. [2022-11-21 09:08:56,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12583 states, 9543 states have (on average 1.3363722099968562) internal successors, (12753), 9801 states have internal predecessors, (12753), 1958 states have call successors, (1958), 926 states have call predecessors, (1958), 1081 states have return successors, (2556), 1992 states have call predecessors, (2556), 1957 states have call successors, (2556) [2022-11-21 09:08:56,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12583 states to 12583 states and 17267 transitions. [2022-11-21 09:08:56,089 INFO L78 Accepts]: Start accepts. Automaton has 12583 states and 17267 transitions. Word has length 208 [2022-11-21 09:08:56,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:08:56,090 INFO L495 AbstractCegarLoop]: Abstraction has 12583 states and 17267 transitions. [2022-11-21 09:08:56,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 9 states have internal predecessors, (115), 2 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (23), 6 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-21 09:08:56,090 INFO L276 IsEmpty]: Start isEmpty. Operand 12583 states and 17267 transitions. [2022-11-21 09:08:56,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-11-21 09:08:56,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:08:56,100 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 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] [2022-11-21 09:08:56,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 09:08:56,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:08:56,311 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:08:56,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:08:56,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1833099563, now seen corresponding path program 1 times [2022-11-21 09:08:56,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:08:56,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355279757] [2022-11-21 09:08:56,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:08:56,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:08:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:08:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:08:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:08:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 09:08:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 09:08:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 09:08:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 09:08:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 09:08:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:08:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:08:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 09:08:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 09:08:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-21 09:08:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-21 09:08:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-21 09:08:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-21 09:08:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-21 09:08:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:08:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-21 09:08:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:56,867 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-21 09:08:56,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:08:56,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355279757] [2022-11-21 09:08:56,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355279757] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:08:56,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579377546] [2022-11-21 09:08:56,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:08:56,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:08:56,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:08:56,872 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:08:56,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 09:08:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:57,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 1536 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 09:08:57,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:08:57,618 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-11-21 09:08:57,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:08:57,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579377546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:08:57,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:08:57,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-21 09:08:57,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460833433] [2022-11-21 09:08:57,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:08:57,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:08:57,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:08:57,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:08:57,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:08:57,624 INFO L87 Difference]: Start difference. First operand 12583 states and 17267 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-21 09:08:59,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:08:59,653 INFO L93 Difference]: Finished difference Result 31184 states and 42945 transitions. [2022-11-21 09:08:59,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:08:59,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 226 [2022-11-21 09:08:59,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:08:59,745 INFO L225 Difference]: With dead ends: 31184 [2022-11-21 09:08:59,746 INFO L226 Difference]: Without dead ends: 18651 [2022-11-21 09:08:59,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-21 09:08:59,785 INFO L413 NwaCegarLoop]: 1763 mSDtfsCounter, 1316 mSDsluCounter, 3638 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1322 SdHoareTripleChecker+Valid, 5401 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:08:59,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1322 Valid, 5401 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 09:08:59,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18651 states. [2022-11-21 09:09:00,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18651 to 12593. [2022-11-21 09:09:00,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12593 states, 9553 states have (on average 1.336020098398409) internal successors, (12763), 9801 states have internal predecessors, (12763), 1958 states have call successors, (1958), 926 states have call predecessors, (1958), 1081 states have return successors, (2556), 1992 states have call predecessors, (2556), 1957 states have call successors, (2556) [2022-11-21 09:09:00,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12593 states to 12593 states and 17277 transitions. [2022-11-21 09:09:00,942 INFO L78 Accepts]: Start accepts. Automaton has 12593 states and 17277 transitions. Word has length 226 [2022-11-21 09:09:00,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:00,943 INFO L495 AbstractCegarLoop]: Abstraction has 12593 states and 17277 transitions. [2022-11-21 09:09:00,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-21 09:09:00,943 INFO L276 IsEmpty]: Start isEmpty. Operand 12593 states and 17277 transitions. [2022-11-21 09:09:00,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-21 09:09:00,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:00,949 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:09:00,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:01,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3ea34a-6f7c-48e6-b06f-31a3e513175b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 09:09:01,150 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:09:01,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:01,151 INFO L85 PathProgramCache]: Analyzing trace with hash -670216187, now seen corresponding path program 1 times [2022-11-21 09:09:01,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:01,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002489074] [2022-11-21 09:09:01,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:01,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:09:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:09:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:09:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 09:09:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 09:09:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 09:09:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 09:09:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 09:09:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:09:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:09:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 09:09:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 09:09:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 09:09:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 09:09:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 09:09:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:09:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-21 09:09:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 09:09:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-21 09:09:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-21 09:09:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-21 09:09:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-11-21 09:09:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,868 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2022-11-21 09:09:03,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:03,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002489074] [2022-11-21 09:09:03,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002489074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:09:03,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:09:03,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 09:09:03,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136060356] [2022-11-21 09:09:03,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:09:03,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 09:09:03,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:03,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 09:09:03,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2022-11-21 09:09:03,872 INFO L87 Difference]: Start difference. First operand 12593 states and 17277 transitions. Second operand has 20 states, 20 states have (on average 6.8) internal successors, (136), 12 states have internal predecessors, (136), 5 states have call successors, (28), 7 states have call predecessors, (28), 4 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-21 09:09:13,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:13,062 INFO L93 Difference]: Finished difference Result 34036 states and 49217 transitions. [2022-11-21 09:09:13,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-21 09:09:13,062 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.8) internal successors, (136), 12 states have internal predecessors, (136), 5 states have call successors, (28), 7 states have call predecessors, (28), 4 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) Word has length 237 [2022-11-21 09:09:13,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:13,174 INFO L225 Difference]: With dead ends: 34036 [2022-11-21 09:09:13,174 INFO L226 Difference]: Without dead ends: 21493 [2022-11-21 09:09:13,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2022-11-21 09:09:13,227 INFO L413 NwaCegarLoop]: 1116 mSDtfsCounter, 2329 mSDsluCounter, 12871 mSDsCounter, 0 mSdLazyCounter, 7830 mSolverCounterSat, 845 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2445 SdHoareTripleChecker+Valid, 13987 SdHoareTripleChecker+Invalid, 8675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 845 IncrementalHoareTripleChecker+Valid, 7830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:13,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2445 Valid, 13987 Invalid, 8675 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [845 Valid, 7830 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-21 09:09:13,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21493 states. [2022-11-21 09:09:14,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21493 to 12673. [2022-11-21 09:09:14,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12673 states, 9610 states have (on average 1.3340270551508846) internal successors, (12820), 9858 states have internal predecessors, (12820), 1973 states have call successors, (1973), 926 states have call predecessors, (1973), 1089 states have return successors, (2581), 2011 states have call predecessors, (2581), 1972 states have call successors, (2581) [2022-11-21 09:09:14,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12673 states to 12673 states and 17374 transitions. [2022-11-21 09:09:14,721 INFO L78 Accepts]: Start accepts. Automaton has 12673 states and 17374 transitions. Word has length 237 [2022-11-21 09:09:14,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:14,722 INFO L495 AbstractCegarLoop]: Abstraction has 12673 states and 17374 transitions. [2022-11-21 09:09:14,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.8) internal successors, (136), 12 states have internal predecessors, (136), 5 states have call successors, (28), 7 states have call predecessors, (28), 4 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-21 09:09:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 12673 states and 17374 transitions. [2022-11-21 09:09:14,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-21 09:09:14,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:14,731 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:09:14,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 09:09:14,731 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:09:14,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:14,732 INFO L85 PathProgramCache]: Analyzing trace with hash -944975801, now seen corresponding path program 1 times [2022-11-21 09:09:14,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:14,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566616033] [2022-11-21 09:09:14,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:14,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:09:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:09:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 09:09:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 09:09:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 09:09:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 09:09:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 09:09:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 09:09:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:09:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:09:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 09:09:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 09:09:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 09:09:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 09:09:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 09:09:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:09:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-21 09:09:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 09:09:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-21 09:09:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-21 09:09:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-21 09:09:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-11-21 09:09:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-21 09:09:18,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:18,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566616033] [2022-11-21 09:09:18,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566616033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:09:18,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:09:18,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-21 09:09:18,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556704038] [2022-11-21 09:09:18,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:09:18,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 09:09:18,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:18,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 09:09:18,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-21 09:09:18,479 INFO L87 Difference]: Start difference. First operand 12673 states and 17374 transitions. Second operand has 14 states, 14 states have (on average 9.642857142857142) internal successors, (135), 9 states have internal predecessors, (135), 2 states have call successors, (28), 7 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27)