./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_212bf83f-f2b2-483b-adb2-7b2041d2c462/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_212bf83f-f2b2-483b-adb2-7b2041d2c462/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_212bf83f-f2b2-483b-adb2-7b2041d2c462/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_212bf83f-f2b2-483b-adb2-7b2041d2c462/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_212bf83f-f2b2-483b-adb2-7b2041d2c462/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_212bf83f-f2b2-483b-adb2-7b2041d2c462/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 d253b745dee5ef05ffbbca6087a2bac9710536fabca8626c0fece9fd6b3fe837 --- 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 13:48:37,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:48:37,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:48:38,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:48:38,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:48:38,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:48:38,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:48:38,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:48:38,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:48:38,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:48:38,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:48:38,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:48:38,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:48:38,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:48:38,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:48:38,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:48:38,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:48:38,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:48:38,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:48:38,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:48:38,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:48:38,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:48:38,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:48:38,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:48:38,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:48:38,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:48:38,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:48:38,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:48:38,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:48:38,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:48:38,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:48:38,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:48:38,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:48:38,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:48:38,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:48:38,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:48:38,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:48:38,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:48:38,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:48:38,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:48:38,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:48:38,098 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_212bf83f-f2b2-483b-adb2-7b2041d2c462/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-21 13:48:38,144 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:48:38,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:48:38,145 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:48:38,163 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:48:38,165 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:48:38,165 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:48:38,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:48:38,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:48:38,168 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:48:38,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:48:38,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:48:38,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:48:38,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:48:38,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:48:38,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:48:38,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:48:38,173 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:48:38,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:48:38,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:48:38,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:48:38,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:48:38,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:48:38,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:48:38,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:48:38,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:48:38,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:48:38,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:48:38,177 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:48:38,178 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:48:38,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:48:38,178 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_212bf83f-f2b2-483b-adb2-7b2041d2c462/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_212bf83f-f2b2-483b-adb2-7b2041d2c462/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d253b745dee5ef05ffbbca6087a2bac9710536fabca8626c0fece9fd6b3fe837 [2022-11-21 13:48:38,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:48:38,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:48:38,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:48:38,553 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:48:38,554 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:48:38,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_212bf83f-f2b2-483b-adb2-7b2041d2c462/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2022-11-21 13:48:41,963 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:48:42,772 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:48:42,773 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_212bf83f-f2b2-483b-adb2-7b2041d2c462/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2022-11-21 13:48:42,854 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_212bf83f-f2b2-483b-adb2-7b2041d2c462/bin/uautomizer-vX5HgA9Q3a/data/13ebfbb12/40934a5d5e6f44f0afac3978af196cf0/FLAG59ca75732 [2022-11-21 13:48:42,874 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_212bf83f-f2b2-483b-adb2-7b2041d2c462/bin/uautomizer-vX5HgA9Q3a/data/13ebfbb12/40934a5d5e6f44f0afac3978af196cf0 [2022-11-21 13:48:42,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:48:42,879 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:48:42,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:48:42,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:48:42,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:48:42,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:48:42" (1/1) ... [2022-11-21 13:48:42,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d47d7c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:42, skipping insertion in model container [2022-11-21 13:48:42,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:48:42" (1/1) ... [2022-11-21 13:48:42,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:48:43,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:48:46,403 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_212bf83f-f2b2-483b-adb2-7b2041d2c462/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i[312804,312817] [2022-11-21 13:48:46,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:48:46,698 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:48:47,302 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_212bf83f-f2b2-483b-adb2-7b2041d2c462/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i[312804,312817] [2022-11-21 13:48:47,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:48:47,498 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:48:47,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:47 WrapperNode [2022-11-21 13:48:47,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:48:47,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:48:47,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:48:47,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:48:47,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:47" (1/1) ... [2022-11-21 13:48:47,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:47" (1/1) ... [2022-11-21 13:48:48,030 INFO L138 Inliner]: procedures = 480, calls = 4035, calls flagged for inlining = 166, calls inlined = 158, statements flattened = 7374 [2022-11-21 13:48:48,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:48:48,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:48:48,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:48:48,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:48:48,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:47" (1/1) ... [2022-11-21 13:48:48,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:47" (1/1) ... [2022-11-21 13:48:48,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:47" (1/1) ... [2022-11-21 13:48:48,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:47" (1/1) ... [2022-11-21 13:48:48,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:47" (1/1) ... [2022-11-21 13:48:48,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:47" (1/1) ... [2022-11-21 13:48:48,406 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:47" (1/1) ... [2022-11-21 13:48:48,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:47" (1/1) ... [2022-11-21 13:48:48,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:48:48,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:48:48,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:48:48,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:48:48,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:47" (1/1) ... [2022-11-21 13:48:48,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:48:48,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_212bf83f-f2b2-483b-adb2-7b2041d2c462/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:48:48,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_212bf83f-f2b2-483b-adb2-7b2041d2c462/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:48:48,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_212bf83f-f2b2-483b-adb2-7b2041d2c462/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:48:48,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb_ring [2022-11-21 13:48:48,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb_ring [2022-11-21 13:48:48,622 INFO L130 BoogieDeclarations]: Found specification of procedure thunderbolt_shutdown_and_free [2022-11-21 13:48:48,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thunderbolt_shutdown_and_free [2022-11-21 13:48:48,623 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice_tail_init [2022-11-21 13:48:48,623 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice_tail_init [2022-11-21 13:48:48,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-21 13:48:48,623 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-21 13:48:48,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-21 13:48:48,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-21 13:48:48,624 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_get_drom_offset [2022-11-21 13:48:48,624 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_get_drom_offset [2022-11-21 13:48:48,624 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_free [2022-11-21 13:48:48,625 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_free [2022-11-21 13:48:48,625 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-21 13:48:48,625 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-21 13:48:48,625 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite32options [2022-11-21 13:48:48,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite32options [2022-11-21 13:48:48,626 INFO L130 BoogieDeclarations]: Found specification of procedure ring_interrupt_active [2022-11-21 13:48:48,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_interrupt_active [2022-11-21 13:48:48,626 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_rx_submit [2022-11-21 13:48:48,626 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_rx_submit [2022-11-21 13:48:48,627 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_disable_interrupts [2022-11-21 13:48:48,627 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_disable_interrupts [2022-11-21 13:48:48,627 INFO L130 BoogieDeclarations]: Found specification of procedure get_route [2022-11-21 13:48:48,627 INFO L138 BoogieDeclarations]: Found implementation of procedure get_route [2022-11-21 13:48:48,627 INFO L130 BoogieDeclarations]: Found specification of procedure check_header [2022-11-21 13:48:48,628 INFO L138 BoogieDeclarations]: Found implementation of procedure check_header [2022-11-21 13:48:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-21 13:48:48,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-21 13:48:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure tb_activate_pcie_devices [2022-11-21 13:48:48,628 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_activate_pcie_devices [2022-11-21 13:48:48,629 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-21 13:48:48,630 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-21 13:48:48,630 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-21 13:48:48,631 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-21 13:48:48,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb_ring [2022-11-21 13:48:48,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb_ring [2022-11-21 13:48:48,632 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_read_raw [2022-11-21 13:48:48,632 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_read_raw [2022-11-21 13:48:48,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:48:48,633 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cap_is_long [2022-11-21 13:48:48,633 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cap_is_long [2022-11-21 13:48:48,633 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_set_unpplugged [2022-11-21 13:48:48,633 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_set_unpplugged [2022-11-21 13:48:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-21 13:48:48,634 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-21 13:48:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure tb_crc8 [2022-11-21 13:48:48,635 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_crc8 [2022-11-21 13:48:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure ring_write_descriptors [2022-11-21 13:48:48,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_write_descriptors [2022-11-21 13:48:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-21 13:48:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-21 13:48:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure tb_plug_events_active [2022-11-21 13:48:48,636 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_plug_events_active [2022-11-21 13:48:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2022-11-21 13:48:48,637 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2022-11-21 13:48:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_stop [2022-11-21 13:48:48,638 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_stop [2022-11-21 13:48:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb [2022-11-21 13:48:48,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb [2022-11-21 13:48:48,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 13:48:48,639 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_print_error [2022-11-21 13:48:48,639 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_print_error [2022-11-21 13:48:48,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-21 13:48:48,639 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-21 13:48:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_add_nfc_credits [2022-11-21 13:48:48,640 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_add_nfc_credits [2022-11-21 13:48:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2022-11-21 13:48:48,640 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2022-11-21 13:48:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2022-11-21 13:48:48,641 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2022-11-21 13:48:48,642 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_start [2022-11-21 13:48:48,642 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_start [2022-11-21 13:48:48,642 INFO L130 BoogieDeclarations]: Found specification of procedure ring_start [2022-11-21 13:48:48,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_start [2022-11-21 13:48:48,643 INFO L130 BoogieDeclarations]: Found specification of procedure ring_stop [2022-11-21 13:48:48,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_stop [2022-11-21 13:48:48,643 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_write [2022-11-21 13:48:48,643 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_write [2022-11-21 13:48:48,644 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-21 13:48:48,644 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-21 13:48:48,645 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_read [2022-11-21 13:48:48,645 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_read [2022-11-21 13:48:48,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-21 13:48:48,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-21 13:48:48,646 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_free [2022-11-21 13:48:48,646 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_free [2022-11-21 13:48:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 13:48:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure ring_interrupt_index [2022-11-21 13:48:48,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_interrupt_index [2022-11-21 13:48:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-21 13:48:48,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-21 13:48:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:48:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 13:48:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cap_is_basic [2022-11-21 13:48:48,649 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cap_is_basic [2022-11-21 13:48:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure tb_upstream_port [2022-11-21 13:48:48,649 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_upstream_port [2022-11-21 13:48:48,650 INFO L130 BoogieDeclarations]: Found specification of procedure __ring_enqueue [2022-11-21 13:48:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __ring_enqueue [2022-11-21 13:48:48,651 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-21 13:48:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-21 13:48:48,651 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-21 13:48:48,652 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-21 13:48:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-21 13:48:48,652 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-21 13:48:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb [2022-11-21 13:48:48,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb [2022-11-21 13:48:48,653 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_rx [2022-11-21 13:48:48,653 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_rx [2022-11-21 13:48:48,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:48:48,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:48:48,654 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-21 13:48:48,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-21 13:48:48,654 INFO L130 BoogieDeclarations]: Found specification of procedure ring_desc_base [2022-11-21 13:48:48,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_desc_base [2022-11-21 13:48:48,656 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_shutdown [2022-11-21 13:48:48,656 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_shutdown [2022-11-21 13:48:48,659 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-21 13:48:48,660 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-21 13:48:48,661 INFO L130 BoogieDeclarations]: Found specification of procedure tb_scan_port [2022-11-21 13:48:48,661 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_scan_port [2022-11-21 13:48:48,662 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_active [2022-11-21 13:48:48,663 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_active [2022-11-21 13:48:48,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-21 13:48:48,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-21 13:48:48,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-21 13:48:48,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-21 13:48:48,670 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_read_n [2022-11-21 13:48:48,670 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_read_n [2022-11-21 13:48:48,670 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_tx [2022-11-21 13:48:48,671 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_tx [2022-11-21 13:48:48,671 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_read [2022-11-21 13:48:48,671 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_read [2022-11-21 13:48:48,671 INFO L130 BoogieDeclarations]: Found specification of procedure ring_work [2022-11-21 13:48:48,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_work [2022-11-21 13:48:48,672 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kmalloc [2022-11-21 13:48:48,672 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kmalloc [2022-11-21 13:48:48,672 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite16desc [2022-11-21 13:48:48,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite16desc [2022-11-21 13:48:48,672 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_pkg_free [2022-11-21 13:48:48,673 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_pkg_free [2022-11-21 13:48:48,673 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-21 13:48:48,673 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-21 13:48:48,673 INFO L130 BoogieDeclarations]: Found specification of procedure tb_find_cap [2022-11-21 13:48:48,673 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_find_cap [2022-11-21 13:48:48,674 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-21 13:48:48,674 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-21 13:48:48,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-21 13:48:48,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-21 13:48:48,674 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_deactivate [2022-11-21 13:48:48,675 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_deactivate [2022-11-21 13:48:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_ctl_write [2022-11-21 13:48:48,675 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_ctl_write [2022-11-21 13:48:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-21 13:48:48,675 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-21 13:48:48,676 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-21 13:48:48,676 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-21 13:48:48,676 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_pkg_alloc [2022-11-21 13:48:48,676 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_pkg_alloc [2022-11-21 13:48:48,676 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_suspend_noirq [2022-11-21 13:48:48,677 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_suspend_noirq [2022-11-21 13:48:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_ctl_read [2022-11-21 13:48:48,677 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_ctl_read [2022-11-21 13:48:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-21 13:48:48,678 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-21 13:48:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_port_active [2022-11-21 13:48:48,678 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_port_active [2022-11-21 13:48:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_suspend [2022-11-21 13:48:48,678 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_suspend [2022-11-21 13:48:48,679 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_alloc [2022-11-21 13:48:48,679 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_alloc [2022-11-21 13:48:48,679 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-21 13:48:48,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-21 13:48:48,680 INFO L130 BoogieDeclarations]: Found specification of procedure tb_drom_read_uid_only [2022-11-21 13:48:48,680 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_drom_read_uid_only [2022-11-21 13:48:48,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:48:48,680 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-21 13:48:48,681 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-21 13:48:48,681 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_write [2022-11-21 13:48:48,681 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_write [2022-11-21 13:48:48,681 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_activate [2022-11-21 13:48:48,681 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_activate [2022-11-21 13:48:48,682 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_interrupt_work [2022-11-21 13:48:48,682 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_interrupt_work [2022-11-21 13:48:48,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 13:48:48,682 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2022-11-21 13:48:48,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2022-11-21 13:48:48,683 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-11-21 13:48:48,683 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-11-21 13:48:48,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 13:48:48,683 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite32desc [2022-11-21 13:48:48,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite32desc [2022-11-21 13:48:48,684 INFO L130 BoogieDeclarations]: Found specification of procedure tb_route_length [2022-11-21 13:48:48,684 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_route_length [2022-11-21 13:48:48,684 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_resume_noirq [2022-11-21 13:48:48,684 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_resume_noirq [2022-11-21 13:48:48,684 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-21 13:48:48,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-21 13:48:48,685 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-21 13:48:48,685 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-21 13:48:48,685 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-21 13:48:48,685 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-21 13:48:48,686 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_alloc [2022-11-21 13:48:48,686 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_alloc [2022-11-21 13:48:48,686 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-21 13:48:48,686 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-21 13:48:48,686 INFO L130 BoogieDeclarations]: Found specification of procedure ring_free [2022-11-21 13:48:48,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_free [2022-11-21 13:48:48,687 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-21 13:48:48,687 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-21 13:48:48,687 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite64desc [2022-11-21 13:48:48,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite64desc [2022-11-21 13:48:48,688 INFO L130 BoogieDeclarations]: Found specification of procedure __tb_path_deallocate_nfc [2022-11-21 13:48:48,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __tb_path_deallocate_nfc [2022-11-21 13:48:48,688 INFO L130 BoogieDeclarations]: Found specification of procedure tb_free_unplugged_children [2022-11-21 13:48:48,688 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_free_unplugged_children [2022-11-21 13:48:48,688 INFO L130 BoogieDeclarations]: Found specification of procedure tb_crc [2022-11-21 13:48:48,689 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_crc [2022-11-21 13:48:48,689 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-21 13:48:48,689 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-21 13:48:48,689 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_resume [2022-11-21 13:48:48,689 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_resume [2022-11-21 13:48:48,690 INFO L130 BoogieDeclarations]: Found specification of procedure tb_wait_for_port [2022-11-21 13:48:48,690 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_wait_for_port [2022-11-21 13:48:48,690 INFO L130 BoogieDeclarations]: Found specification of procedure tb_scan_switch [2022-11-21 13:48:48,690 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_scan_switch [2022-11-21 13:48:48,690 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_restart [2022-11-21 13:48:48,691 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_restart [2022-11-21 13:48:48,691 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-21 13:48:48,691 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-21 13:48:48,691 INFO L130 BoogieDeclarations]: Found specification of procedure check_config_address [2022-11-21 13:48:48,691 INFO L138 BoogieDeclarations]: Found implementation of procedure check_config_address [2022-11-21 13:48:48,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 13:48:48,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-21 13:48:48,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-21 13:48:48,692 INFO L130 BoogieDeclarations]: Found specification of procedure __crc32c_le [2022-11-21 13:48:48,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __crc32c_le [2022-11-21 13:48:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kcalloc [2022-11-21 13:48:48,693 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kcalloc [2022-11-21 13:48:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_free [2022-11-21 13:48:48,693 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_free [2022-11-21 13:48:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_is_invalid [2022-11-21 13:48:48,694 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_is_invalid [2022-11-21 13:48:48,695 INFO L130 BoogieDeclarations]: Found specification of procedure dev_driver_string [2022-11-21 13:48:48,700 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_driver_string [2022-11-21 13:48:48,700 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_transfer [2022-11-21 13:48:48,700 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_transfer [2022-11-21 13:48:48,700 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_init_path [2022-11-21 13:48:48,700 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_init_path [2022-11-21 13:48:48,701 INFO L130 BoogieDeclarations]: Found specification of procedure __tb_path_deactivate_hops [2022-11-21 13:48:48,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __tb_path_deactivate_hops [2022-11-21 13:48:48,701 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_free [2022-11-21 13:48:48,701 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_free [2022-11-21 13:48:48,701 INFO L130 BoogieDeclarations]: Found specification of procedure tb_is_upstream_port [2022-11-21 13:48:48,705 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_is_upstream_port [2022-11-21 13:48:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure ring_alloc [2022-11-21 13:48:48,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_alloc [2022-11-21 13:48:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure make_header [2022-11-21 13:48:48,706 INFO L138 BoogieDeclarations]: Found implementation of procedure make_header [2022-11-21 13:48:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-21 13:48:48,707 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-21 13:48:48,707 INFO L130 BoogieDeclarations]: Found specification of procedure tb_free_invalid_tunnels [2022-11-21 13:48:48,707 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_free_invalid_tunnels [2022-11-21 13:48:48,707 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-11-21 13:48:48,707 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-11-21 13:48:48,708 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_read [2022-11-21 13:48:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_read [2022-11-21 13:48:48,708 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_deactivate [2022-11-21 13:48:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_deactivate [2022-11-21 13:48:48,708 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_out [2022-11-21 13:48:48,709 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_out [2022-11-21 13:48:48,709 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_write [2022-11-21 13:48:48,709 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_write [2022-11-21 13:48:48,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb_nhi [2022-11-21 13:48:48,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb_nhi [2022-11-21 13:48:48,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:48:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure tb_route [2022-11-21 13:48:48,710 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_route [2022-11-21 13:48:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb_nhi [2022-11-21 13:48:48,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb_nhi [2022-11-21 13:48:50,246 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:48:50,250 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:48:50,991 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-21 13:49:15,459 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:49:15,489 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:49:15,490 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 13:49:15,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:49:15 BoogieIcfgContainer [2022-11-21 13:49:15,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:49:15,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:49:15,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:49:15,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:49:15,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:48:42" (1/3) ... [2022-11-21 13:49:15,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242b5ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:49:15, skipping insertion in model container [2022-11-21 13:49:15,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:47" (2/3) ... [2022-11-21 13:49:15,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242b5ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:49:15, skipping insertion in model container [2022-11-21 13:49:15,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:49:15" (3/3) ... [2022-11-21 13:49:15,507 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2022-11-21 13:49:15,526 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:49:15,527 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:49:15,642 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:49:15,649 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;@2f48c534, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:49:15,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 13:49:15,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 2502 states, 1667 states have (on average 1.3239352129574085) internal successors, (2207), 1714 states have internal predecessors, (2207), 701 states have call successors, (701), 133 states have call predecessors, (701), 132 states have return successors, (695), 691 states have call predecessors, (695), 695 states have call successors, (695) [2022-11-21 13:49:15,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-21 13:49:15,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:15,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:15,675 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:49:15,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:15,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1185477661, now seen corresponding path program 1 times [2022-11-21 13:49:15,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:15,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115070904] [2022-11-21 13:49:15,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:15,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:16,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:49:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:16,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:49:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:16,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:49:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:16,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:16,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:16,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115070904] [2022-11-21 13:49:16,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115070904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:16,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:16,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:49:16,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182556072] [2022-11-21 13:49:16,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:16,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:49:16,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:16,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:49:16,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:49:16,448 INFO L87 Difference]: Start difference. First operand has 2502 states, 1667 states have (on average 1.3239352129574085) internal successors, (2207), 1714 states have internal predecessors, (2207), 701 states have call successors, (701), 133 states have call predecessors, (701), 132 states have return successors, (695), 691 states have call predecessors, (695), 695 states have call successors, (695) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 13:49:20,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:49:25,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:49:26,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:49:30,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:49:35,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:49:37,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:49:40,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:49:40,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:40,393 INFO L93 Difference]: Finished difference Result 5607 states and 8544 transitions. [2022-11-21 13:49:40,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:49:40,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-11-21 13:49:40,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:40,462 INFO L225 Difference]: With dead ends: 5607 [2022-11-21 13:49:40,463 INFO L226 Difference]: Without dead ends: 3097 [2022-11-21 13:49:40,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:49:40,502 INFO L413 NwaCegarLoop]: 2883 mSDtfsCounter, 1844 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 2004 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2166 SdHoareTripleChecker+Valid, 4551 SdHoareTripleChecker+Invalid, 3942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2004 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:40,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2166 Valid, 4551 Invalid, 3942 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2004 Valid, 1935 Invalid, 3 Unknown, 0 Unchecked, 23.3s Time] [2022-11-21 13:49:40,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2022-11-21 13:49:40,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 2489. [2022-11-21 13:49:40,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2489 states, 1662 states have (on average 1.3194945848375452) internal successors, (2193), 1701 states have internal predecessors, (2193), 695 states have call successors, (695), 132 states have call predecessors, (695), 131 states have return successors, (684), 680 states have call predecessors, (684), 684 states have call successors, (684) [2022-11-21 13:49:40,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2489 states to 2489 states and 3572 transitions. [2022-11-21 13:49:40,820 INFO L78 Accepts]: Start accepts. Automaton has 2489 states and 3572 transitions. Word has length 35 [2022-11-21 13:49:40,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:40,821 INFO L495 AbstractCegarLoop]: Abstraction has 2489 states and 3572 transitions. [2022-11-21 13:49:40,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 13:49:40,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2489 states and 3572 transitions. [2022-11-21 13:49:40,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-21 13:49:40,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:40,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:40,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:49:40,825 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:49:40,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:40,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1051464155, now seen corresponding path program 1 times [2022-11-21 13:49:40,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:40,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714284381] [2022-11-21 13:49:40,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:40,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:41,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:49:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:41,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:49:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:41,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:49:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:41,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:41,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714284381] [2022-11-21 13:49:41,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714284381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:41,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:41,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:49:41,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096794617] [2022-11-21 13:49:41,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:41,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:49:41,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:41,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:49:41,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:49:41,347 INFO L87 Difference]: Start difference. First operand 2489 states and 3572 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 13:49:46,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:49:48,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:49:51,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:50:05,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:50:07,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:50:10,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:50:12,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:50:15,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:15,261 INFO L93 Difference]: Finished difference Result 3150 states and 4634 transitions. [2022-11-21 13:50:15,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:50:15,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-11-21 13:50:15,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:15,282 INFO L225 Difference]: With dead ends: 3150 [2022-11-21 13:50:15,282 INFO L226 Difference]: Without dead ends: 3146 [2022-11-21 13:50:15,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:15,286 INFO L413 NwaCegarLoop]: 2879 mSDtfsCounter, 4166 mSDsluCounter, 2914 mSDsCounter, 0 mSdLazyCounter, 2993 mSolverCounterSat, 1947 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4501 SdHoareTripleChecker+Valid, 5793 SdHoareTripleChecker+Invalid, 4945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1947 IncrementalHoareTripleChecker+Valid, 2993 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:15,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4501 Valid, 5793 Invalid, 4945 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1947 Valid, 2993 Invalid, 5 Unknown, 0 Unchecked, 33.3s Time] [2022-11-21 13:50:15,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2022-11-21 13:50:15,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 2531. [2022-11-21 13:50:15,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2531 states, 1692 states have (on average 1.3138297872340425) internal successors, (2223), 1729 states have internal predecessors, (2223), 695 states have call successors, (695), 144 states have call predecessors, (695), 143 states have return successors, (686), 682 states have call predecessors, (686), 686 states have call successors, (686) [2022-11-21 13:50:15,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 3604 transitions. [2022-11-21 13:50:15,495 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 3604 transitions. Word has length 35 [2022-11-21 13:50:15,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:15,496 INFO L495 AbstractCegarLoop]: Abstraction has 2531 states and 3604 transitions. [2022-11-21 13:50:15,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 13:50:15,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 3604 transitions. [2022-11-21 13:50:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-21 13:50:15,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:15,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:15,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:50:15,499 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:15,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:15,499 INFO L85 PathProgramCache]: Analyzing trace with hash -817559709, now seen corresponding path program 1 times [2022-11-21 13:50:15,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:15,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524705359] [2022-11-21 13:50:15,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:15,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:15,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:50:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:15,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:50:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:15,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:50:16,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:16,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524705359] [2022-11-21 13:50:16,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524705359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:16,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:16,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:50:16,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851464609] [2022-11-21 13:50:16,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:16,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:50:16,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:16,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:50:16,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:50:16,011 INFO L87 Difference]: Start difference. First operand 2531 states and 3604 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 13:50:20,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:50:22,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:50:28,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:50:34,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:50:39,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:50:44,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:50:45,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:50:48,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:48,507 INFO L93 Difference]: Finished difference Result 3297 states and 4766 transitions. [2022-11-21 13:50:48,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:50:48,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-11-21 13:50:48,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:48,527 INFO L225 Difference]: With dead ends: 3297 [2022-11-21 13:50:48,527 INFO L226 Difference]: Without dead ends: 3293 [2022-11-21 13:50:48,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:48,530 INFO L413 NwaCegarLoop]: 2853 mSDtfsCounter, 4206 mSDsluCounter, 2955 mSDsCounter, 0 mSdLazyCounter, 3073 mSolverCounterSat, 1847 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4611 SdHoareTripleChecker+Valid, 5808 SdHoareTripleChecker+Invalid, 4923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1847 IncrementalHoareTripleChecker+Valid, 3073 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:48,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4611 Valid, 5808 Invalid, 4923 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1847 Valid, 3073 Invalid, 3 Unknown, 0 Unchecked, 32.1s Time] [2022-11-21 13:50:48,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2022-11-21 13:50:48,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 2658. [2022-11-21 13:50:48,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2658 states, 1781 states have (on average 1.3020774845592364) internal successors, (2319), 1816 states have internal predecessors, (2319), 703 states have call successors, (703), 174 states have call predecessors, (703), 173 states have return successors, (696), 692 states have call predecessors, (696), 696 states have call successors, (696) [2022-11-21 13:50:48,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 3718 transitions. [2022-11-21 13:50:48,703 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 3718 transitions. Word has length 38 [2022-11-21 13:50:48,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:48,704 INFO L495 AbstractCegarLoop]: Abstraction has 2658 states and 3718 transitions. [2022-11-21 13:50:48,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 13:50:48,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 3718 transitions. [2022-11-21 13:50:48,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-21 13:50:48,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:48,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:48,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 13:50:48,706 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:48,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:48,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1747452121, now seen corresponding path program 1 times [2022-11-21 13:50:48,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:48,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504862757] [2022-11-21 13:50:48,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:48,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:48,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:50:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:48,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:50:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:48,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:50:48,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:48,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504862757] [2022-11-21 13:50:48,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504862757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:48,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:48,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:50:48,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162994235] [2022-11-21 13:50:48,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:48,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:50:48,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:48,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:50:48,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:50:48,988 INFO L87 Difference]: Start difference. First operand 2658 states and 3718 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 13:50:54,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:50:56,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:51:00,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:51:02,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:51:06,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:51:25,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:51:27,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:51:30,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:51:32,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:51:34,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:51:36,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:51:40,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:51:40,595 INFO L93 Difference]: Finished difference Result 9197 states and 13186 transitions. [2022-11-21 13:51:40,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:51:40,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-11-21 13:51:40,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:51:40,634 INFO L225 Difference]: With dead ends: 9197 [2022-11-21 13:51:40,634 INFO L226 Difference]: Without dead ends: 6547 [2022-11-21 13:51:40,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:51:40,647 INFO L413 NwaCegarLoop]: 3357 mSDtfsCounter, 5401 mSDsluCounter, 5617 mSDsCounter, 0 mSdLazyCounter, 5477 mSolverCounterSat, 3003 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6068 SdHoareTripleChecker+Valid, 8974 SdHoareTripleChecker+Invalid, 8488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3003 IncrementalHoareTripleChecker+Valid, 5477 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:51:40,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6068 Valid, 8974 Invalid, 8488 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3003 Valid, 5477 Invalid, 8 Unknown, 0 Unchecked, 50.9s Time] [2022-11-21 13:51:40,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6547 states. [2022-11-21 13:51:41,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6547 to 5277. [2022-11-21 13:51:41,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5277 states, 3534 states have (on average 1.302207130730051) internal successors, (4602), 3598 states have internal predecessors, (4602), 1396 states have call successors, (1396), 347 states have call predecessors, (1396), 346 states have return successors, (1389), 1381 states have call predecessors, (1389), 1389 states have call successors, (1389) [2022-11-21 13:51:41,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 7387 transitions. [2022-11-21 13:51:41,151 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 7387 transitions. Word has length 36 [2022-11-21 13:51:41,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:51:41,151 INFO L495 AbstractCegarLoop]: Abstraction has 5277 states and 7387 transitions. [2022-11-21 13:51:41,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 13:51:41,152 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 7387 transitions. [2022-11-21 13:51:41,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-21 13:51:41,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:51:41,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:51:41,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 13:51:41,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:51:41,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:41,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1138989693, now seen corresponding path program 1 times [2022-11-21 13:51:41,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:41,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242276675] [2022-11-21 13:51:41,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:41,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:41,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:51:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:41,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:51:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:41,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:51:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:41,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-21 13:51:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:51:41,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:51:41,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242276675] [2022-11-21 13:51:41,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242276675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:51:41,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:51:41,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:51:41,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399014801] [2022-11-21 13:51:41,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:51:41,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:51:41,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:51:41,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:51:41,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:51:41,448 INFO L87 Difference]: Start difference. First operand 5277 states and 7387 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-21 13:51:45,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:51:50,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:52:06,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:52:10,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:52:20,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:52:21,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:52:23,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:52:28,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:52:30,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:52:30,634 INFO L93 Difference]: Finished difference Result 16425 states and 23414 transitions. [2022-11-21 13:52:30,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:52:30,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2022-11-21 13:52:30,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:52:30,707 INFO L225 Difference]: With dead ends: 16425 [2022-11-21 13:52:30,708 INFO L226 Difference]: Without dead ends: 11156 [2022-11-21 13:52:30,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:52:30,732 INFO L413 NwaCegarLoop]: 3892 mSDtfsCounter, 3778 mSDsluCounter, 6249 mSDsCounter, 0 mSdLazyCounter, 5378 mSolverCounterSat, 2171 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4302 SdHoareTripleChecker+Valid, 10141 SdHoareTripleChecker+Invalid, 7552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2171 IncrementalHoareTripleChecker+Valid, 5378 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:52:30,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4302 Valid, 10141 Invalid, 7552 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2171 Valid, 5378 Invalid, 3 Unknown, 0 Unchecked, 48.2s Time] [2022-11-21 13:52:30,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11156 states. [2022-11-21 13:52:31,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11156 to 9001. [2022-11-21 13:52:31,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9001 states, 6025 states have (on average 1.301078838174274) internal successors, (7839), 6131 states have internal predecessors, (7839), 2359 states have call successors, (2359), 617 states have call predecessors, (2359), 616 states have return successors, (2352), 2336 states have call predecessors, (2352), 2352 states have call successors, (2352) [2022-11-21 13:52:31,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9001 states to 9001 states and 12550 transitions. [2022-11-21 13:52:31,484 INFO L78 Accepts]: Start accepts. Automaton has 9001 states and 12550 transitions. Word has length 41 [2022-11-21 13:52:31,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:52:31,485 INFO L495 AbstractCegarLoop]: Abstraction has 9001 states and 12550 transitions. [2022-11-21 13:52:31,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-21 13:52:31,485 INFO L276 IsEmpty]: Start isEmpty. Operand 9001 states and 12550 transitions. [2022-11-21 13:52:31,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-21 13:52:31,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:52:31,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:52:31,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 13:52:31,487 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:52:31,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:52:31,487 INFO L85 PathProgramCache]: Analyzing trace with hash 581921734, now seen corresponding path program 1 times [2022-11-21 13:52:31,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:52:31,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200337027] [2022-11-21 13:52:31,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:31,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:52:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:31,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:52:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:31,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:52:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:31,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:52:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:31,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:31,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:52:31,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200337027] [2022-11-21 13:52:31,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200337027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:52:31,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:52:31,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:52:31,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807788962] [2022-11-21 13:52:31,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:52:31,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:52:31,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:52:31,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:52:31,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:52:31,751 INFO L87 Difference]: Start difference. First operand 9001 states and 12550 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 13:52:36,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:52:48,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:52:53,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:52:56,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:52:57,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:53:00,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:53:00,104 INFO L93 Difference]: Finished difference Result 20955 states and 29954 transitions. [2022-11-21 13:53:00,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:53:00,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-21 13:53:00,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:53:00,169 INFO L225 Difference]: With dead ends: 20955 [2022-11-21 13:53:00,169 INFO L226 Difference]: Without dead ends: 11962 [2022-11-21 13:53:00,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:53:00,209 INFO L413 NwaCegarLoop]: 3161 mSDtfsCounter, 2171 mSDsluCounter, 4487 mSDsCounter, 0 mSdLazyCounter, 3247 mSolverCounterSat, 2038 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2556 SdHoareTripleChecker+Valid, 7648 SdHoareTripleChecker+Invalid, 5288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2038 IncrementalHoareTripleChecker+Valid, 3247 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:53:00,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2556 Valid, 7648 Invalid, 5288 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2038 Valid, 3247 Invalid, 3 Unknown, 0 Unchecked, 27.4s Time] [2022-11-21 13:53:00,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11962 states. [2022-11-21 13:53:00,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11962 to 9002. [2022-11-21 13:53:00,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9002 states, 6026 states have (on average 1.3010288748755394) internal successors, (7840), 6132 states have internal predecessors, (7840), 2359 states have call successors, (2359), 617 states have call predecessors, (2359), 616 states have return successors, (2352), 2336 states have call predecessors, (2352), 2352 states have call successors, (2352) [2022-11-21 13:53:00,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9002 states to 9002 states and 12551 transitions. [2022-11-21 13:53:00,945 INFO L78 Accepts]: Start accepts. Automaton has 9002 states and 12551 transitions. Word has length 40 [2022-11-21 13:53:00,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:53:00,945 INFO L495 AbstractCegarLoop]: Abstraction has 9002 states and 12551 transitions. [2022-11-21 13:53:00,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 13:53:00,946 INFO L276 IsEmpty]: Start isEmpty. Operand 9002 states and 12551 transitions. [2022-11-21 13:53:00,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-21 13:53:00,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:53:00,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:53:00,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 13:53:00,950 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:53:00,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:53:00,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1261980104, now seen corresponding path program 1 times [2022-11-21 13:53:00,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:53:00,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429573936] [2022-11-21 13:53:00,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:53:00,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:53:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:53:01,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:53:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:53:01,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:53:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:53:01,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:53:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:53:01,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:53:01,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:53:01,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429573936] [2022-11-21 13:53:01,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429573936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:53:01,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:53:01,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:53:01,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3695174] [2022-11-21 13:53:01,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:53:01,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:53:01,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:53:01,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:53:01,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:53:01,248 INFO L87 Difference]: Start difference. First operand 9002 states and 12551 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 13:53:04,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:53:11,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:53:15,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:53:20,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:53:22,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:53:25,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:53:25,308 INFO L93 Difference]: Finished difference Result 11142 states and 16018 transitions. [2022-11-21 13:53:25,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:53:25,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2022-11-21 13:53:25,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:53:25,352 INFO L225 Difference]: With dead ends: 11142 [2022-11-21 13:53:25,353 INFO L226 Difference]: Without dead ends: 11139 [2022-11-21 13:53:25,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:53:25,358 INFO L413 NwaCegarLoop]: 2814 mSDtfsCounter, 5046 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 3171 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5398 SdHoareTripleChecker+Valid, 4466 SdHoareTripleChecker+Invalid, 5155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3171 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:53:25,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5398 Valid, 4466 Invalid, 5155 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3171 Valid, 1981 Invalid, 3 Unknown, 0 Unchecked, 23.1s Time] [2022-11-21 13:53:25,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11139 states. [2022-11-21 13:53:25,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11139 to 9001. [2022-11-21 13:53:26,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9001 states, 6026 states have (on average 1.3008629273149686) internal successors, (7839), 6131 states have internal predecessors, (7839), 2358 states have call successors, (2358), 617 states have call predecessors, (2358), 616 states have return successors, (2352), 2336 states have call predecessors, (2352), 2352 states have call successors, (2352) [2022-11-21 13:53:26,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9001 states to 9001 states and 12549 transitions. [2022-11-21 13:53:26,047 INFO L78 Accepts]: Start accepts. Automaton has 9001 states and 12549 transitions. Word has length 40 [2022-11-21 13:53:26,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:53:26,047 INFO L495 AbstractCegarLoop]: Abstraction has 9001 states and 12549 transitions. [2022-11-21 13:53:26,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 13:53:26,048 INFO L276 IsEmpty]: Start isEmpty. Operand 9001 states and 12549 transitions. [2022-11-21 13:53:26,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-21 13:53:26,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:53:26,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:53:26,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 13:53:26,049 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:53:26,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:53:26,050 INFO L85 PathProgramCache]: Analyzing trace with hash 465491876, now seen corresponding path program 1 times [2022-11-21 13:53:26,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:53:26,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352233515] [2022-11-21 13:53:26,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:53:26,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:53:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:53:26,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:53:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:53:26,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:53:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:53:26,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:53:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:53:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:53:26,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:53:26,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352233515] [2022-11-21 13:53:26,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352233515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:53:26,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:53:26,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:53:26,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551332056] [2022-11-21 13:53:26,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:53:26,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:53:26,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:53:26,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:53:26,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:53:26,300 INFO L87 Difference]: Start difference. First operand 9001 states and 12549 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 13:53:30,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:53:47,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:53:50,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:53:54,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:53:54,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:53:54,866 INFO L93 Difference]: Finished difference Result 13207 states and 18601 transitions. [2022-11-21 13:53:54,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:53:54,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2022-11-21 13:53:54,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:53:54,914 INFO L225 Difference]: With dead ends: 13207 [2022-11-21 13:53:54,914 INFO L226 Difference]: Without dead ends: 13203 [2022-11-21 13:53:54,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:53:54,920 INFO L413 NwaCegarLoop]: 3002 mSDtfsCounter, 3156 mSDsluCounter, 3808 mSDsCounter, 0 mSdLazyCounter, 3221 mSolverCounterSat, 2468 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3524 SdHoareTripleChecker+Valid, 6810 SdHoareTripleChecker+Invalid, 5691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2468 IncrementalHoareTripleChecker+Valid, 3221 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:53:54,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3524 Valid, 6810 Invalid, 5691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2468 Valid, 3221 Invalid, 2 Unknown, 0 Unchecked, 27.5s Time] [2022-11-21 13:53:54,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13203 states. [2022-11-21 13:53:55,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13203 to 10805. [2022-11-21 13:53:55,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10805 states, 7214 states have (on average 1.286110341003604) internal successors, (9278), 7349 states have internal predecessors, (9278), 2760 states have call successors, (2760), 831 states have call predecessors, (2760), 830 states have return successors, (2756), 2740 states have call predecessors, (2756), 2756 states have call successors, (2756) [2022-11-21 13:53:55,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10805 states to 10805 states and 14794 transitions. [2022-11-21 13:53:55,593 INFO L78 Accepts]: Start accepts. Automaton has 10805 states and 14794 transitions. Word has length 41 [2022-11-21 13:53:55,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:53:55,593 INFO L495 AbstractCegarLoop]: Abstraction has 10805 states and 14794 transitions. [2022-11-21 13:53:55,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 13:53:55,594 INFO L276 IsEmpty]: Start isEmpty. Operand 10805 states and 14794 transitions. [2022-11-21 13:53:55,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-21 13:53:55,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:53:55,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:53:55,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 13:53:55,595 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:53:55,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:53:55,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2141655758, now seen corresponding path program 1 times [2022-11-21 13:53:55,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:53:55,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342150920] [2022-11-21 13:53:55,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:53:55,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:53:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:53:55,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:53:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:53:55,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:53:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:53:55,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:53:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:53:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:53:55,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:53:55,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342150920] [2022-11-21 13:53:55,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342150920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:53:55,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:53:55,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:53:55,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662683152] [2022-11-21 13:53:55,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:53:55,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:53:55,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:53:55,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:53:55,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:53:55,858 INFO L87 Difference]: Start difference. First operand 10805 states and 14794 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 13:54:00,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:54:14,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:54:16,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:54:20,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:54:22,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:54:25,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:54:30,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:54:30,096 INFO L93 Difference]: Finished difference Result 13201 states and 18591 transitions. [2022-11-21 13:54:30,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:54:30,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2022-11-21 13:54:30,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:54:30,171 INFO L225 Difference]: With dead ends: 13201 [2022-11-21 13:54:30,171 INFO L226 Difference]: Without dead ends: 13189 [2022-11-21 13:54:30,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:54:30,179 INFO L413 NwaCegarLoop]: 2819 mSDtfsCounter, 4320 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 2754 mSolverCounterSat, 2092 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4671 SdHoareTripleChecker+Valid, 5610 SdHoareTripleChecker+Invalid, 4849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2092 IncrementalHoareTripleChecker+Valid, 2754 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:54:30,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4671 Valid, 5610 Invalid, 4849 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2092 Valid, 2754 Invalid, 3 Unknown, 0 Unchecked, 32.9s Time] [2022-11-21 13:54:30,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13189 states. [2022-11-21 13:54:31,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13189 to 10795. [2022-11-21 13:54:31,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10795 states, 7205 states have (on average 1.2856349757113117) internal successors, (9263), 7339 states have internal predecessors, (9263), 2759 states have call successors, (2759), 831 states have call predecessors, (2759), 830 states have return successors, (2756), 2740 states have call predecessors, (2756), 2756 states have call successors, (2756) [2022-11-21 13:54:31,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10795 states to 10795 states and 14778 transitions. [2022-11-21 13:54:31,106 INFO L78 Accepts]: Start accepts. Automaton has 10795 states and 14778 transitions. Word has length 44 [2022-11-21 13:54:31,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:54:31,107 INFO L495 AbstractCegarLoop]: Abstraction has 10795 states and 14778 transitions. [2022-11-21 13:54:31,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 13:54:31,107 INFO L276 IsEmpty]: Start isEmpty. Operand 10795 states and 14778 transitions. [2022-11-21 13:54:31,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-21 13:54:31,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:54:31,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:31,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 13:54:31,109 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:54:31,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:31,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1876358331, now seen corresponding path program 1 times [2022-11-21 13:54:31,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:31,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696471799] [2022-11-21 13:54:31,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:31,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:31,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:54:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:31,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:54:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:31,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:54:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:31,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 13:54:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:31,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 13:54:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:31,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:54:31,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:31,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696471799] [2022-11-21 13:54:31,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696471799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:54:31,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:54:31,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:54:31,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439149724] [2022-11-21 13:54:31,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:54:31,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:54:31,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:31,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:54:31,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:54:31,572 INFO L87 Difference]: Start difference. First operand 10795 states and 14778 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:54:37,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:54:47,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:55:04,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:55:14,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:55:18,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:55:28,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:28,186 INFO L93 Difference]: Finished difference Result 13224 states and 18629 transitions. [2022-11-21 13:55:28,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 13:55:28,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2022-11-21 13:55:28,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:28,235 INFO L225 Difference]: With dead ends: 13224 [2022-11-21 13:55:28,235 INFO L226 Difference]: Without dead ends: 13221 [2022-11-21 13:55:28,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:55:28,242 INFO L413 NwaCegarLoop]: 847 mSDtfsCounter, 3690 mSDsluCounter, 2005 mSDsCounter, 0 mSdLazyCounter, 9884 mSolverCounterSat, 2373 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4099 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 12259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2373 IncrementalHoareTripleChecker+Valid, 9884 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:28,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4099 Valid, 2852 Invalid, 12259 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2373 Valid, 9884 Invalid, 2 Unknown, 0 Unchecked, 55.0s Time] [2022-11-21 13:55:28,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13221 states. [2022-11-21 13:55:29,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13221 to 10794. [2022-11-21 13:55:29,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10794 states, 7205 states have (on average 1.2845246356696738) internal successors, (9255), 7338 states have internal predecessors, (9255), 2758 states have call successors, (2758), 831 states have call predecessors, (2758), 830 states have return successors, (2756), 2740 states have call predecessors, (2756), 2756 states have call successors, (2756) [2022-11-21 13:55:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10794 states to 10794 states and 14769 transitions. [2022-11-21 13:55:29,273 INFO L78 Accepts]: Start accepts. Automaton has 10794 states and 14769 transitions. Word has length 51 [2022-11-21 13:55:29,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:29,273 INFO L495 AbstractCegarLoop]: Abstraction has 10794 states and 14769 transitions. [2022-11-21 13:55:29,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:55:29,274 INFO L276 IsEmpty]: Start isEmpty. Operand 10794 states and 14769 transitions. [2022-11-21 13:55:29,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-21 13:55:29,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:29,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:29,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 13:55:29,276 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:55:29,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:29,277 INFO L85 PathProgramCache]: Analyzing trace with hash 426599605, now seen corresponding path program 1 times [2022-11-21 13:55:29,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:29,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554255195] [2022-11-21 13:55:29,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:29,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:29,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:55:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:29,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:55:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:29,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:55:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:29,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:55:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:29,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 13:55:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:30,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:55:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:30,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:30,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:30,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554255195] [2022-11-21 13:55:30,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554255195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:30,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:30,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:55:30,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157143406] [2022-11-21 13:55:30,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:30,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:55:30,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:30,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:55:30,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:55:30,021 INFO L87 Difference]: Start difference. First operand 10794 states and 14769 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-21 13:55:35,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:55:43,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:55:47,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:55:56,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:56:03,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:56:05,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:56:09,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:56:11,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:56:18,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:56:21,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:21,080 INFO L93 Difference]: Finished difference Result 27304 states and 39298 transitions. [2022-11-21 13:56:21,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 13:56:21,081 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-11-21 13:56:21,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:21,138 INFO L225 Difference]: With dead ends: 27304 [2022-11-21 13:56:21,138 INFO L226 Difference]: Without dead ends: 16518 [2022-11-21 13:56:21,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:56:21,164 INFO L413 NwaCegarLoop]: 2871 mSDtfsCounter, 8494 mSDsluCounter, 5803 mSDsCounter, 0 mSdLazyCounter, 6014 mSolverCounterSat, 7136 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8846 SdHoareTripleChecker+Valid, 8674 SdHoareTripleChecker+Invalid, 13155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7136 IncrementalHoareTripleChecker+Valid, 6014 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:21,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8846 Valid, 8674 Invalid, 13155 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7136 Valid, 6014 Invalid, 5 Unknown, 0 Unchecked, 48.6s Time] [2022-11-21 13:56:21,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16518 states. [2022-11-21 13:56:22,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16518 to 10816. [2022-11-21 13:56:22,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10816 states, 7222 states have (on average 1.2833010246469123) internal successors, (9268), 7355 states have internal predecessors, (9268), 2760 states have call successors, (2760), 834 states have call predecessors, (2760), 833 states have return successors, (2758), 2742 states have call predecessors, (2758), 2758 states have call successors, (2758) [2022-11-21 13:56:22,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10816 states to 10816 states and 14786 transitions. [2022-11-21 13:56:22,276 INFO L78 Accepts]: Start accepts. Automaton has 10816 states and 14786 transitions. Word has length 59 [2022-11-21 13:56:22,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:22,276 INFO L495 AbstractCegarLoop]: Abstraction has 10816 states and 14786 transitions. [2022-11-21 13:56:22,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-21 13:56:22,277 INFO L276 IsEmpty]: Start isEmpty. Operand 10816 states and 14786 transitions. [2022-11-21 13:56:22,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-21 13:56:22,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:22,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:56:22,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 13:56:22,279 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:22,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:22,279 INFO L85 PathProgramCache]: Analyzing trace with hash -144752296, now seen corresponding path program 1 times [2022-11-21 13:56:22,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:22,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197638242] [2022-11-21 13:56:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:22,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:22,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:56:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:22,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:56:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:22,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:56:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:22,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 13:56:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:22,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 13:56:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:22,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:56:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:22,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:22,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197638242] [2022-11-21 13:56:22,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197638242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:22,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:22,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:56:22,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132196762] [2022-11-21 13:56:22,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:22,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:56:22,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:22,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:56:22,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:56:22,717 INFO L87 Difference]: Start difference. First operand 10816 states and 14786 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-21 13:56:28,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:56:30,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:56:38,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:56:56,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:57:03,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:57:05,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:57:07,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:57:12,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:57:14,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:57:16,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:57:22,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:57:27,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:57:29,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:57:29,862 INFO L93 Difference]: Finished difference Result 15928 states and 23407 transitions. [2022-11-21 13:57:29,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 13:57:29,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-11-21 13:57:29,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:57:29,925 INFO L225 Difference]: With dead ends: 15928 [2022-11-21 13:57:29,925 INFO L226 Difference]: Without dead ends: 15925 [2022-11-21 13:57:29,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:57:29,934 INFO L413 NwaCegarLoop]: 2816 mSDtfsCounter, 4037 mSDsluCounter, 7880 mSDsCounter, 0 mSdLazyCounter, 8663 mSolverCounterSat, 4089 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4303 SdHoareTripleChecker+Valid, 10696 SdHoareTripleChecker+Invalid, 12757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4089 IncrementalHoareTripleChecker+Valid, 8663 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:57:29,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4303 Valid, 10696 Invalid, 12757 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4089 Valid, 8663 Invalid, 5 Unknown, 0 Unchecked, 64.9s Time] [2022-11-21 13:57:29,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15925 states. [2022-11-21 13:57:30,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15925 to 10815. [2022-11-21 13:57:30,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10815 states, 7222 states have (on average 1.2816394350595404) internal successors, (9256), 7354 states have internal predecessors, (9256), 2759 states have call successors, (2759), 834 states have call predecessors, (2759), 833 states have return successors, (2758), 2742 states have call predecessors, (2758), 2758 states have call successors, (2758) [2022-11-21 13:57:31,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10815 states to 10815 states and 14773 transitions. [2022-11-21 13:57:31,023 INFO L78 Accepts]: Start accepts. Automaton has 10815 states and 14773 transitions. Word has length 60 [2022-11-21 13:57:31,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:57:31,023 INFO L495 AbstractCegarLoop]: Abstraction has 10815 states and 14773 transitions. [2022-11-21 13:57:31,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-21 13:57:31,024 INFO L276 IsEmpty]: Start isEmpty. Operand 10815 states and 14773 transitions. [2022-11-21 13:57:31,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-21 13:57:31,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:57:31,029 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:57:31,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 13:57:31,029 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:57:31,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:31,029 INFO L85 PathProgramCache]: Analyzing trace with hash 2094448743, now seen corresponding path program 1 times [2022-11-21 13:57:31,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:57:31,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711292756] [2022-11-21 13:57:31,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:57:31,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:57:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:31,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:57:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:31,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:57:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:31,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:57:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:31,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 13:57:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:31,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:57:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:31,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:57:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:31,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 13:57:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:31,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 13:57:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:31,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 13:57:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:31,421 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-21 13:57:31,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:57:31,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711292756] [2022-11-21 13:57:31,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711292756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:57:31,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:57:31,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:57:31,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576422296] [2022-11-21 13:57:31,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:57:31,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:57:31,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:57:31,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:57:31,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:57:31,424 INFO L87 Difference]: Start difference. First operand 10815 states and 14773 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 13:57:37,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:57:47,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:57:49,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:57:52,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:58:07,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:58:15,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:58:16,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:58:18,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:58:23,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:58:30,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:58:32,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:32,492 INFO L93 Difference]: Finished difference Result 20237 states and 27971 transitions. [2022-11-21 13:58:32,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 13:58:32,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 90 [2022-11-21 13:58:32,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:32,529 INFO L225 Difference]: With dead ends: 20237 [2022-11-21 13:58:32,529 INFO L226 Difference]: Without dead ends: 9442 [2022-11-21 13:58:32,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:58:32,606 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 3604 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 10406 mSolverCounterSat, 2231 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4018 SdHoareTripleChecker+Valid, 2203 SdHoareTripleChecker+Invalid, 12643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2231 IncrementalHoareTripleChecker+Valid, 10406 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:32,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4018 Valid, 2203 Invalid, 12643 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2231 Valid, 10406 Invalid, 6 Unknown, 0 Unchecked, 59.4s Time] [2022-11-21 13:58:32,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9442 states. [2022-11-21 13:58:33,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9442 to 7745. [2022-11-21 13:58:33,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7745 states, 5171 states have (on average 1.2792496615741635) internal successors, (6615), 5266 states have internal predecessors, (6615), 1965 states have call successors, (1965), 609 states have call predecessors, (1965), 608 states have return successors, (1964), 1952 states have call predecessors, (1964), 1964 states have call successors, (1964) [2022-11-21 13:58:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7745 states to 7745 states and 10544 transitions. [2022-11-21 13:58:33,381 INFO L78 Accepts]: Start accepts. Automaton has 7745 states and 10544 transitions. Word has length 90 [2022-11-21 13:58:33,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:33,381 INFO L495 AbstractCegarLoop]: Abstraction has 7745 states and 10544 transitions. [2022-11-21 13:58:33,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 13:58:33,382 INFO L276 IsEmpty]: Start isEmpty. Operand 7745 states and 10544 transitions. [2022-11-21 13:58:33,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-21 13:58:33,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:33,388 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 13:58:33,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 13:58:33,389 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:58:33,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:33,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1851342011, now seen corresponding path program 1 times [2022-11-21 13:58:33,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:58:33,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753505116] [2022-11-21 13:58:33,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:33,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:58:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:34,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:58:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:34,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:58:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:34,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:58:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:34,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 13:58:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:34,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:58:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:34,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:58:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:34,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 13:58:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:34,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:58:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:34,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:58:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:34,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-21 13:58:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:34,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 13:58:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:34,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 13:58:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:34,152 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-21 13:58:34,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:58:34,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753505116] [2022-11-21 13:58:34,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753505116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:34,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:34,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:58:34,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622476258] [2022-11-21 13:58:34,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:34,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:58:34,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:58:34,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:58:34,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:58:34,155 INFO L87 Difference]: Start difference. First operand 7745 states and 10544 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-21 13:58:41,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:58:44,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:58:58,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:59:03,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:59:07,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:59:29,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:59:41,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:59:46,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:59:54,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 13:59:57,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:57,931 INFO L93 Difference]: Finished difference Result 19222 states and 26640 transitions. [2022-11-21 13:59:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 13:59:57,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 107 [2022-11-21 13:59:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:57,996 INFO L225 Difference]: With dead ends: 19222 [2022-11-21 13:59:57,996 INFO L226 Difference]: Without dead ends: 13794 [2022-11-21 13:59:58,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:59:58,015 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 9106 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 15914 mSolverCounterSat, 7616 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9502 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 23535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 7616 IncrementalHoareTripleChecker+Valid, 15914 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:58,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9502 Valid, 1928 Invalid, 23535 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [7616 Valid, 15914 Invalid, 5 Unknown, 0 Unchecked, 81.1s Time] [2022-11-21 13:59:58,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13794 states. [2022-11-21 13:59:59,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13794 to 11318. [2022-11-21 13:59:59,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11318 states, 7537 states have (on average 1.276104550882314) internal successors, (9618), 7686 states have internal predecessors, (9618), 2878 states have call successors, (2878), 903 states have call predecessors, (2878), 902 states have return successors, (2890), 2856 states have call predecessors, (2890), 2877 states have call successors, (2890) [2022-11-21 13:59:59,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11318 states to 11318 states and 15386 transitions. [2022-11-21 13:59:59,219 INFO L78 Accepts]: Start accepts. Automaton has 11318 states and 15386 transitions. Word has length 107 [2022-11-21 13:59:59,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:59,220 INFO L495 AbstractCegarLoop]: Abstraction has 11318 states and 15386 transitions. [2022-11-21 13:59:59,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-21 13:59:59,220 INFO L276 IsEmpty]: Start isEmpty. Operand 11318 states and 15386 transitions. [2022-11-21 13:59:59,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-21 13:59:59,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:59,228 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 13:59:59,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 13:59:59,228 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:59,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:59,229 INFO L85 PathProgramCache]: Analyzing trace with hash 639121766, now seen corresponding path program 1 times [2022-11-21 13:59:59,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:59,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247914341] [2022-11-21 13:59:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:59,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:59,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:59,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:59:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:59,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:59:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:59,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 13:59:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:59,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:59:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:59,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:59:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:59,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 13:59:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:59,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:59:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:59,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:59:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:59,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 13:59:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:59,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 13:59:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:59,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-21 13:59:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-21 13:59:59,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:59,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247914341] [2022-11-21 13:59:59,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247914341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:59:59,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:59:59,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:59:59,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574275542] [2022-11-21 13:59:59,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:59:59,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:59:59,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:59,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:59:59,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:59:59,742 INFO L87 Difference]: Start difference. First operand 11318 states and 15386 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 14:00:05,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:00:36,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:00:45,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:00:47,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:00:50,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:01:00,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:01:00,821 INFO L93 Difference]: Finished difference Result 14350 states and 19978 transitions. [2022-11-21 14:01:00,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 14:01:00,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2022-11-21 14:01:00,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:01:00,823 INFO L225 Difference]: With dead ends: 14350 [2022-11-21 14:01:00,824 INFO L226 Difference]: Without dead ends: 0 [2022-11-21 14:01:00,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-21 14:01:00,851 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 5579 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 9878 mSolverCounterSat, 4633 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5762 SdHoareTripleChecker+Valid, 2047 SdHoareTripleChecker+Invalid, 14513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4633 IncrementalHoareTripleChecker+Valid, 9878 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.6s IncrementalHoareTripleChecker+Time [2022-11-21 14:01:00,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5762 Valid, 2047 Invalid, 14513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4633 Valid, 9878 Invalid, 2 Unknown, 0 Unchecked, 58.6s Time] [2022-11-21 14:01:00,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-21 14:01:00,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-21 14:01:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:01:00,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-21 14:01:00,855 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2022-11-21 14:01:00,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:01:00,855 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 14:01:00,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 14:01:00,856 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-21 14:01:00,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-21 14:01:00,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 14:01:00,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 14:01:00,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-21 14:01:34,549 WARN L233 SmtUtils]: Spent 32.68s on a formula simplification. DAG size of input: 71 DAG size of output: 69 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 14:02:08,858 WARN L233 SmtUtils]: Spent 34.29s on a formula simplification. DAG size of input: 76 DAG size of output: 74 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 14:02:41,763 WARN L233 SmtUtils]: Spent 32.90s on a formula simplification. DAG size of input: 73 DAG size of output: 71 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)