./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_8edd9d8a-a554-42f4-b02d-9c5dc0a08a26/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8edd9d8a-a554-42f4-b02d-9c5dc0a08a26/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8edd9d8a-a554-42f4-b02d-9c5dc0a08a26/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8edd9d8a-a554-42f4-b02d-9c5dc0a08a26/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8edd9d8a-a554-42f4-b02d-9c5dc0a08a26/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8edd9d8a-a554-42f4-b02d-9c5dc0a08a26/bin/uautomizer-TMbwUNV5ro --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 e87ce4631152faee62991e43ea4262d58cd06d3a6c93a184b0775dd51465b70f --- 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-8393723 [2022-11-18 20:17:21,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:17:21,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:17:21,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:17:21,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:17:21,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:17:21,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:17:21,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:17:21,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:17:21,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:17:21,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:17:21,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:17:21,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:17:21,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:17:21,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:17:21,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:17:21,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:17:21,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:17:21,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:17:21,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:17:21,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:17:21,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:17:21,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:17:21,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:17:21,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:17:21,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:17:21,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:17:21,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:17:21,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:17:21,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:17:21,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:17:21,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:17:21,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:17:21,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:17:21,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:17:21,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:17:21,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:17:21,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:17:21,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:17:21,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:17:21,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:17:21,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8edd9d8a-a554-42f4-b02d-9c5dc0a08a26/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 20:17:21,148 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:17:21,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:17:21,149 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:17:21,149 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:17:21,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:17:21,150 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:17:21,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:17:21,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:17:21,151 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:17:21,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:17:21,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:17:21,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:17:21,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:17:21,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:17:21,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:17:21,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:17:21,154 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:17:21,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:17:21,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:17:21,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:17:21,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:17:21,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:17:21,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:17:21,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:17:21,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:17:21,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:17:21,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:17:21,157 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:17:21,157 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:17:21,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:17:21,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8edd9d8a-a554-42f4-b02d-9c5dc0a08a26/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8edd9d8a-a554-42f4-b02d-9c5dc0a08a26/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e87ce4631152faee62991e43ea4262d58cd06d3a6c93a184b0775dd51465b70f [2022-11-18 20:17:21,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:17:21,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:17:21,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:17:21,489 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:17:21,490 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:17:21,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8edd9d8a-a554-42f4-b02d-9c5dc0a08a26/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2022-11-18 20:17:21,587 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8edd9d8a-a554-42f4-b02d-9c5dc0a08a26/bin/uautomizer-TMbwUNV5ro/data/fb81e5f0e/53baa88bcb3940689ddd6f4b775e0317/FLAG001064475 [2022-11-18 20:17:22,491 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:17:22,492 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8edd9d8a-a554-42f4-b02d-9c5dc0a08a26/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2022-11-18 20:17:22,553 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8edd9d8a-a554-42f4-b02d-9c5dc0a08a26/bin/uautomizer-TMbwUNV5ro/data/fb81e5f0e/53baa88bcb3940689ddd6f4b775e0317/FLAG001064475 [2022-11-18 20:17:22,956 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8edd9d8a-a554-42f4-b02d-9c5dc0a08a26/bin/uautomizer-TMbwUNV5ro/data/fb81e5f0e/53baa88bcb3940689ddd6f4b775e0317 [2022-11-18 20:17:22,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:17:22,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:17:22,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:17:22,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:17:22,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:17:22,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:17:22" (1/1) ... [2022-11-18 20:17:22,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@380caf8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:22, skipping insertion in model container [2022-11-18 20:17:22,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:17:22" (1/1) ... [2022-11-18 20:17:22,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:17:23,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:17:24,633 WARN L234 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_8edd9d8a-a554-42f4-b02d-9c5dc0a08a26/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i[270348,270361] [2022-11-18 20:17:24,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:17:24,810 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:17:25,227 WARN L234 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_8edd9d8a-a554-42f4-b02d-9c5dc0a08a26/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i[270348,270361] [2022-11-18 20:17:25,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:17:25,595 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:17:25,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:25 WrapperNode [2022-11-18 20:17:25,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:17:25,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:17:25,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:17:25,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:17:25,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:25" (1/1) ... [2022-11-18 20:17:25,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:25" (1/1) ... [2022-11-18 20:17:26,053 INFO L138 Inliner]: procedures = 176, calls = 3879, calls flagged for inlining = 73, calls inlined = 65, statements flattened = 9646 [2022-11-18 20:17:26,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:17:26,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:17:26,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:17:26,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:17:26,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:25" (1/1) ... [2022-11-18 20:17:26,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:25" (1/1) ... [2022-11-18 20:17:26,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:25" (1/1) ... [2022-11-18 20:17:26,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:25" (1/1) ... [2022-11-18 20:17:26,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:25" (1/1) ... [2022-11-18 20:17:26,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:25" (1/1) ... [2022-11-18 20:17:26,608 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:25" (1/1) ... [2022-11-18 20:17:26,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:25" (1/1) ... [2022-11-18 20:17:26,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:17:26,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:17:26,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:17:26,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:17:26,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:25" (1/1) ... [2022-11-18 20:17:26,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:17:26,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8edd9d8a-a554-42f4-b02d-9c5dc0a08a26/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:17:26,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8edd9d8a-a554-42f4-b02d-9c5dc0a08a26/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:17:26,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8edd9d8a-a554-42f4-b02d-9c5dc0a08a26/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:17:26,763 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2022-11-18 20:17:26,763 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2022-11-18 20:17:26,764 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2022-11-18 20:17:26,764 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2022-11-18 20:17:26,764 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_update_device [2022-11-18 20:17:26,765 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_update_device [2022-11-18 20:17:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2022-11-18 20:17:26,765 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2022-11-18 20:17:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-11-18 20:17:26,766 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-11-18 20:17:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:17:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2022-11-18 20:17:26,766 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2022-11-18 20:17:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-18 20:17:26,766 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-18 20:17:26,767 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-11-18 20:17:26,767 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-11-18 20:17:26,767 INFO L130 BoogieDeclarations]: Found specification of procedure store_tolerance [2022-11-18 20:17:26,767 INFO L138 BoogieDeclarations]: Found implementation of procedure store_tolerance [2022-11-18 20:17:26,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2022-11-18 20:17:26,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2022-11-18 20:17:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwmenable [2022-11-18 20:17:26,768 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwmenable [2022-11-18 20:17:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-18 20:17:26,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-18 20:17:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2022-11-18 20:17:26,768 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2022-11-18 20:17:26,769 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2022-11-18 20:17:26,769 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2022-11-18 20:17:26,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2022-11-18 20:17:26,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2022-11-18 20:17:26,769 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp1 [2022-11-18 20:17:26,770 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp1 [2022-11-18 20:17:26,770 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2022-11-18 20:17:26,770 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2022-11-18 20:17:26,770 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2022-11-18 20:17:26,770 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2022-11-18 20:17:26,770 INFO L130 BoogieDeclarations]: Found specification of procedure show_tolerance [2022-11-18 20:17:26,771 INFO L138 BoogieDeclarations]: Found implementation of procedure show_tolerance [2022-11-18 20:17:26,771 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm_mode [2022-11-18 20:17:26,771 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm_mode [2022-11-18 20:17:26,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:17:26,771 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-18 20:17:26,771 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-18 20:17:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-18 20:17:26,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-18 20:17:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure in_count_from_reg [2022-11-18 20:17:26,772 INFO L138 BoogieDeclarations]: Found implementation of procedure in_count_from_reg [2022-11-18 20:17:26,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-18 20:17:26,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-18 20:17:26,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:17:26,773 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-18 20:17:26,773 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-18 20:17:26,774 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2022-11-18 20:17:26,774 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2022-11-18 20:17:26,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:17:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_level [2022-11-18 20:17:26,776 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_level [2022-11-18 20:17:26,776 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp1 [2022-11-18 20:17:26,777 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp1 [2022-11-18 20:17:26,777 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp23 [2022-11-18 20:17:26,777 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp23 [2022-11-18 20:17:26,777 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2022-11-18 20:17:26,778 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2022-11-18 20:17:26,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:17:26,778 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2022-11-18 20:17:26,778 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2022-11-18 20:17:26,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:17:26,778 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_point [2022-11-18 20:17:26,779 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_point [2022-11-18 20:17:26,779 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_write_value [2022-11-18 20:17:26,779 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_write_value [2022-11-18 20:17:26,780 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2022-11-18 20:17:26,780 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2022-11-18 20:17:26,780 INFO L130 BoogieDeclarations]: Found specification of procedure show_thermal_cruise [2022-11-18 20:17:26,780 INFO L138 BoogieDeclarations]: Found implementation of procedure show_thermal_cruise [2022-11-18 20:17:26,780 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp23 [2022-11-18 20:17:26,781 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp23 [2022-11-18 20:17:26,781 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-11-18 20:17:26,781 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-11-18 20:17:26,781 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2022-11-18 20:17:26,781 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2022-11-18 20:17:26,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:17:26,782 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_detect [2022-11-18 20:17:26,782 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_detect [2022-11-18 20:17:26,782 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm_mode [2022-11-18 20:17:26,782 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm_mode [2022-11-18 20:17:26,782 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-11-18 20:17:26,783 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-11-18 20:17:26,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:17:26,783 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2022-11-18 20:17:26,783 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2022-11-18 20:17:26,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 20:17:26,784 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwmenable [2022-11-18 20:17:26,784 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwmenable [2022-11-18 20:17:26,784 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_read_value [2022-11-18 20:17:26,785 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_read_value [2022-11-18 20:17:26,785 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-11-18 20:17:26,786 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-11-18 20:17:26,786 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2022-11-18 20:17:26,787 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2022-11-18 20:17:26,787 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_level [2022-11-18 20:17:26,787 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_level [2022-11-18 20:17:26,787 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2022-11-18 20:17:26,788 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2022-11-18 20:17:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure store_thermal_cruise [2022-11-18 20:17:26,788 INFO L138 BoogieDeclarations]: Found implementation of procedure store_thermal_cruise [2022-11-18 20:17:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:17:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_point [2022-11-18 20:17:26,788 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_point [2022-11-18 20:17:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:17:26,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:17:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-18 20:17:26,789 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-18 20:17:27,914 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:17:27,919 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:17:39,947 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:17:39,974 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:17:39,974 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:17:39,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:17:39 BoogieIcfgContainer [2022-11-18 20:17:39,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:17:39,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:17:39,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:17:39,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:17:39,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:17:22" (1/3) ... [2022-11-18 20:17:39,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61dfe4f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:17:39, skipping insertion in model container [2022-11-18 20:17:39,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:25" (2/3) ... [2022-11-18 20:17:39,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61dfe4f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:17:39, skipping insertion in model container [2022-11-18 20:17:40,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:17:39" (3/3) ... [2022-11-18 20:17:40,005 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2022-11-18 20:17:40,023 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:17:40,024 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:17:40,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:17:40,149 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;@5633c98f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:17:40,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:17:40,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 2129 states, 1646 states have (on average 1.543134872417983) internal successors, (2540), 1653 states have internal predecessors, (2540), 430 states have call successors, (430), 51 states have call predecessors, (430), 51 states have return successors, (430), 430 states have call predecessors, (430), 430 states have call successors, (430) [2022-11-18 20:17:40,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 20:17:40,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:40,190 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] [2022-11-18 20:17:40,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:40,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:40,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1765658404, now seen corresponding path program 1 times [2022-11-18 20:17:40,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:40,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677811376] [2022-11-18 20:17:40,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:40,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:41,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:17:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:41,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:17:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:41,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:41,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:41,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677811376] [2022-11-18 20:17:41,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677811376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:41,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:41,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:17:41,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009613666] [2022-11-18 20:17:41,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:41,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:17:41,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:41,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:17:41,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:41,755 INFO L87 Difference]: Start difference. First operand has 2129 states, 1646 states have (on average 1.543134872417983) internal successors, (2540), 1653 states have internal predecessors, (2540), 430 states have call successors, (430), 51 states have call predecessors, (430), 51 states have return successors, (430), 430 states have call predecessors, (430), 430 states have call successors, (430) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:17:46,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:46,424 INFO L93 Difference]: Finished difference Result 6389 states and 10753 transitions. [2022-11-18 20:17:46,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:17:46,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-11-18 20:17:46,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:46,491 INFO L225 Difference]: With dead ends: 6389 [2022-11-18 20:17:46,492 INFO L226 Difference]: Without dead ends: 4255 [2022-11-18 20:17:46,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:17:46,532 INFO L413 NwaCegarLoop]: 3667 mSDtfsCounter, 3371 mSDsluCounter, 5837 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 905 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3589 SdHoareTripleChecker+Valid, 9504 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 905 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:46,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3589 Valid, 9504 Invalid, 1870 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [905 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-18 20:17:46,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4255 states. [2022-11-18 20:17:46,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4255 to 4222. [2022-11-18 20:17:46,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4222 states, 3268 states have (on average 1.5431456548347613) internal successors, (5043), 3273 states have internal predecessors, (5043), 853 states have call successors, (853), 101 states have call predecessors, (853), 100 states have return successors, (847), 847 states have call predecessors, (847), 847 states have call successors, (847) [2022-11-18 20:17:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4222 states to 4222 states and 6743 transitions. [2022-11-18 20:17:46,845 INFO L78 Accepts]: Start accepts. Automaton has 4222 states and 6743 transitions. Word has length 32 [2022-11-18 20:17:46,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:46,846 INFO L495 AbstractCegarLoop]: Abstraction has 4222 states and 6743 transitions. [2022-11-18 20:17:46,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:17:46,846 INFO L276 IsEmpty]: Start isEmpty. Operand 4222 states and 6743 transitions. [2022-11-18 20:17:46,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 20:17:46,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:46,849 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] [2022-11-18 20:17:46,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:17:46,850 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:46,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:46,851 INFO L85 PathProgramCache]: Analyzing trace with hash -969754401, now seen corresponding path program 1 times [2022-11-18 20:17:46,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:46,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444083662] [2022-11-18 20:17:46,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:46,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:47,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:17:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:47,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:17:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:47,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:47,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:47,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444083662] [2022-11-18 20:17:47,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444083662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:47,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:47,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:17:47,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24728642] [2022-11-18 20:17:47,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:47,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:17:47,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:47,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:17:47,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:47,988 INFO L87 Difference]: Start difference. First operand 4222 states and 6743 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:17:52,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:52,520 INFO L93 Difference]: Finished difference Result 12684 states and 20319 transitions. [2022-11-18 20:17:52,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:17:52,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-11-18 20:17:52,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:52,576 INFO L225 Difference]: With dead ends: 12684 [2022-11-18 20:17:52,576 INFO L226 Difference]: Without dead ends: 8465 [2022-11-18 20:17:52,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:17:52,600 INFO L413 NwaCegarLoop]: 3688 mSDtfsCounter, 3366 mSDsluCounter, 5868 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 904 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3584 SdHoareTripleChecker+Valid, 9556 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 904 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:52,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3584 Valid, 9556 Invalid, 1869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [904 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-18 20:17:52,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8465 states. [2022-11-18 20:17:53,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8465 to 8414. [2022-11-18 20:17:53,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8414 states, 6515 states have (on average 1.543207981580967) internal successors, (10054), 6520 states have internal predecessors, (10054), 1698 states have call successors, (1698), 201 states have call predecessors, (1698), 200 states have return successors, (1692), 1692 states have call predecessors, (1692), 1692 states have call successors, (1692) [2022-11-18 20:17:53,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8414 states to 8414 states and 13444 transitions. [2022-11-18 20:17:53,169 INFO L78 Accepts]: Start accepts. Automaton has 8414 states and 13444 transitions. Word has length 33 [2022-11-18 20:17:53,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:53,170 INFO L495 AbstractCegarLoop]: Abstraction has 8414 states and 13444 transitions. [2022-11-18 20:17:53,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:17:53,170 INFO L276 IsEmpty]: Start isEmpty. Operand 8414 states and 13444 transitions. [2022-11-18 20:17:53,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-18 20:17:53,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:53,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:53,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:17:53,173 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:53,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:53,174 INFO L85 PathProgramCache]: Analyzing trace with hash 801378600, now seen corresponding path program 1 times [2022-11-18 20:17:53,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:53,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202199914] [2022-11-18 20:17:53,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:53,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:54,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:17:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:54,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:17:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:54,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:54,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202199914] [2022-11-18 20:17:54,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202199914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:54,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:54,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:17:54,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743789897] [2022-11-18 20:17:54,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:54,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:17:54,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:54,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:17:54,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:54,119 INFO L87 Difference]: Start difference. First operand 8414 states and 13444 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:17:58,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:58,062 INFO L93 Difference]: Finished difference Result 25284 states and 40518 transitions. [2022-11-18 20:17:58,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:17:58,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-11-18 20:17:58,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:58,158 INFO L225 Difference]: With dead ends: 25284 [2022-11-18 20:17:58,159 INFO L226 Difference]: Without dead ends: 16873 [2022-11-18 20:17:58,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:17:58,206 INFO L413 NwaCegarLoop]: 3699 mSDtfsCounter, 3365 mSDsluCounter, 5879 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3583 SdHoareTripleChecker+Valid, 9578 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:58,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3583 Valid, 9578 Invalid, 1868 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [903 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-18 20:17:58,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16873 states. [2022-11-18 20:17:58,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16873 to 16786. [2022-11-18 20:17:58,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16786 states, 12999 states have (on average 1.5430417724440342) internal successors, (20058), 13004 states have internal predecessors, (20058), 3386 states have call successors, (3386), 401 states have call predecessors, (3386), 400 states have return successors, (3380), 3380 states have call predecessors, (3380), 3380 states have call successors, (3380) [2022-11-18 20:17:58,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16786 states to 16786 states and 26824 transitions. [2022-11-18 20:17:58,986 INFO L78 Accepts]: Start accepts. Automaton has 16786 states and 26824 transitions. Word has length 34 [2022-11-18 20:17:58,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:58,986 INFO L495 AbstractCegarLoop]: Abstraction has 16786 states and 26824 transitions. [2022-11-18 20:17:58,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:17:58,987 INFO L276 IsEmpty]: Start isEmpty. Operand 16786 states and 26824 transitions. [2022-11-18 20:17:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:17:58,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:58,992 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] [2022-11-18 20:17:58,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:17:58,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:58,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:58,994 INFO L85 PathProgramCache]: Analyzing trace with hash -922096465, now seen corresponding path program 1 times [2022-11-18 20:17:58,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:58,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694955527] [2022-11-18 20:17:58,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:58,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:59,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:17:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:59,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:17:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:59,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:59,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694955527] [2022-11-18 20:17:59,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694955527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:59,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:59,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:17:59,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144082217] [2022-11-18 20:17:59,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:59,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:17:59,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:59,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:17:59,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:59,771 INFO L87 Difference]: Start difference. First operand 16786 states and 26824 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:18:03,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:03,690 INFO L93 Difference]: Finished difference Result 50416 states and 80794 transitions. [2022-11-18 20:18:03,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:18:03,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-11-18 20:18:03,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:04,015 INFO L225 Difference]: With dead ends: 50416 [2022-11-18 20:18:04,016 INFO L226 Difference]: Without dead ends: 33633 [2022-11-18 20:18:04,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:18:04,073 INFO L413 NwaCegarLoop]: 3722 mSDtfsCounter, 3357 mSDsluCounter, 5897 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 901 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3560 SdHoareTripleChecker+Valid, 9619 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 901 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:04,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3560 Valid, 9619 Invalid, 1869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [901 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-18 20:18:04,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33633 states. [2022-11-18 20:18:05,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33633 to 33474. [2022-11-18 20:18:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33474 states, 25923 states have (on average 1.5426455271380628) internal successors, (39990), 25928 states have internal predecessors, (39990), 6750 states have call successors, (6750), 801 states have call predecessors, (6750), 800 states have return successors, (6744), 6744 states have call predecessors, (6744), 6744 states have call successors, (6744) [2022-11-18 20:18:05,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33474 states to 33474 states and 53484 transitions. [2022-11-18 20:18:05,836 INFO L78 Accepts]: Start accepts. Automaton has 33474 states and 53484 transitions. Word has length 36 [2022-11-18 20:18:05,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:05,837 INFO L495 AbstractCegarLoop]: Abstraction has 33474 states and 53484 transitions. [2022-11-18 20:18:05,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:18:05,837 INFO L276 IsEmpty]: Start isEmpty. Operand 33474 states and 53484 transitions. [2022-11-18 20:18:05,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 20:18:05,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:05,840 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] [2022-11-18 20:18:05,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:18:05,840 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:18:05,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:05,841 INFO L85 PathProgramCache]: Analyzing trace with hash 970637325, now seen corresponding path program 1 times [2022-11-18 20:18:05,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:05,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228857533] [2022-11-18 20:18:05,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:05,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:06,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:18:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:06,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:18:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:06,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:06,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:06,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228857533] [2022-11-18 20:18:06,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228857533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:06,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:06,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:18:06,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902213277] [2022-11-18 20:18:06,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:06,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:18:06,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:06,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:18:06,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:18:06,755 INFO L87 Difference]: Start difference. First operand 33474 states and 53484 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:18:11,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:11,357 INFO L93 Difference]: Finished difference Result 100544 states and 161102 transitions. [2022-11-18 20:18:11,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:18:11,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-11-18 20:18:11,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:11,690 INFO L225 Difference]: With dead ends: 100544 [2022-11-18 20:18:11,690 INFO L226 Difference]: Without dead ends: 67073 [2022-11-18 20:18:11,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:18:11,996 INFO L413 NwaCegarLoop]: 3729 mSDtfsCounter, 3363 mSDsluCounter, 5900 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 897 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3580 SdHoareTripleChecker+Valid, 9629 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 897 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:11,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3580 Valid, 9629 Invalid, 1866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [897 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-18 20:18:12,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67073 states. [2022-11-18 20:18:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67073 to 66770. [2022-11-18 20:18:15,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66770 states, 51707 states have (on average 1.5421896455025432) internal successors, (79742), 51712 states have internal predecessors, (79742), 13462 states have call successors, (13462), 1601 states have call predecessors, (13462), 1600 states have return successors, (13456), 13456 states have call predecessors, (13456), 13456 states have call successors, (13456) [2022-11-18 20:18:15,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66770 states to 66770 states and 106660 transitions. [2022-11-18 20:18:15,645 INFO L78 Accepts]: Start accepts. Automaton has 66770 states and 106660 transitions. Word has length 30 [2022-11-18 20:18:15,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:15,646 INFO L495 AbstractCegarLoop]: Abstraction has 66770 states and 106660 transitions. [2022-11-18 20:18:15,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:18:15,646 INFO L276 IsEmpty]: Start isEmpty. Operand 66770 states and 106660 transitions. [2022-11-18 20:18:15,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 20:18:15,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:15,647 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] [2022-11-18 20:18:15,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:18:15,648 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:18:15,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:15,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1724566843, now seen corresponding path program 1 times [2022-11-18 20:18:15,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:15,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177767497] [2022-11-18 20:18:15,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:15,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:16,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:18:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:16,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:18:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:16,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:16,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:16,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177767497] [2022-11-18 20:18:16,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177767497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:16,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:16,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:18:16,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794368223] [2022-11-18 20:18:16,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:16,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:18:16,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:16,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:18:16,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:18:16,621 INFO L87 Difference]: Start difference. First operand 66770 states and 106660 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:18:23,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:23,058 INFO L93 Difference]: Finished difference Result 200560 states and 321286 transitions. [2022-11-18 20:18:23,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:18:23,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2022-11-18 20:18:23,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:24,101 INFO L225 Difference]: With dead ends: 200560 [2022-11-18 20:18:24,101 INFO L226 Difference]: Without dead ends: 133793 [2022-11-18 20:18:24,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:18:24,327 INFO L413 NwaCegarLoop]: 3771 mSDtfsCounter, 3362 mSDsluCounter, 5931 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 889 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3580 SdHoareTripleChecker+Valid, 9702 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 889 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:24,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3580 Valid, 9702 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [889 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-18 20:18:24,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133793 states. [2022-11-18 20:18:28,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133793 to 133202. [2022-11-18 20:18:29,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133202 states, 103147 states have (on average 1.541702618592882) internal successors, (159022), 103152 states have internal predecessors, (159022), 26854 states have call successors, (26854), 3201 states have call predecessors, (26854), 3200 states have return successors, (26848), 26848 states have call predecessors, (26848), 26848 states have call successors, (26848) [2022-11-18 20:18:29,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133202 states to 133202 states and 212724 transitions. [2022-11-18 20:18:29,701 INFO L78 Accepts]: Start accepts. Automaton has 133202 states and 212724 transitions. Word has length 31 [2022-11-18 20:18:29,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:29,702 INFO L495 AbstractCegarLoop]: Abstraction has 133202 states and 212724 transitions. [2022-11-18 20:18:29,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:18:29,702 INFO L276 IsEmpty]: Start isEmpty. Operand 133202 states and 212724 transitions. [2022-11-18 20:18:29,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 20:18:29,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:29,703 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] [2022-11-18 20:18:29,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:18:29,704 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:18:29,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:29,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1687992602, now seen corresponding path program 1 times [2022-11-18 20:18:29,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:29,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472590022] [2022-11-18 20:18:29,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:29,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:30,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:18:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:30,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:18:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:30,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:30,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:30,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472590022] [2022-11-18 20:18:30,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472590022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:30,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:30,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:18:30,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905379168] [2022-11-18 20:18:30,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:30,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:18:30,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:30,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:18:30,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:18:30,834 INFO L87 Difference]: Start difference. First operand 133202 states and 212724 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:18:40,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:40,991 INFO L93 Difference]: Finished difference Result 400112 states and 640790 transitions. [2022-11-18 20:18:40,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:18:40,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2022-11-18 20:18:40,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:42,501 INFO L225 Difference]: With dead ends: 400112 [2022-11-18 20:18:42,501 INFO L226 Difference]: Without dead ends: 266913 [2022-11-18 20:18:43,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:18:43,074 INFO L413 NwaCegarLoop]: 3774 mSDtfsCounter, 3354 mSDsluCounter, 5919 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 887 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3572 SdHoareTripleChecker+Valid, 9693 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 887 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:43,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3572 Valid, 9693 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [887 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-18 20:18:43,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266913 states.