./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8 --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 e37e45521ffb127b83b9baab443e42b7c078cf8a8451cb2a1813ac325e01717d --- 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-e04fb08 [2022-11-16 11:40:46,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:40:46,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:40:46,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:40:46,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:40:46,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:40:46,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:40:46,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:40:46,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:40:46,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:40:46,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:40:46,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:40:46,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:40:46,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:40:46,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:40:46,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:40:46,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:40:46,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:40:46,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:40:46,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:40:46,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:40:46,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:40:46,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:40:46,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:40:46,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:40:46,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:40:46,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:40:46,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:40:46,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:40:46,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:40:46,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:40:46,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:40:46,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:40:46,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:40:46,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:40:46,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:40:46,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:40:46,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:40:46,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:40:46,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:40:46,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:40:46,351 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:40:46,377 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:40:46,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:40:46,378 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:40:46,379 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:40:46,380 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:40:46,380 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:40:46,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:40:46,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:40:46,382 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:40:46,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:40:46,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:40:46,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:40:46,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:40:46,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:40:46,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:40:46,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:40:46,385 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:40:46,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:40:46,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:40:46,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:40:46,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:40:46,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:40:46,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:40:46,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:40:46,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:40:46,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:40:46,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:40:46,389 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:40:46,390 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:40:46,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:40:46,391 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_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e37e45521ffb127b83b9baab443e42b7c078cf8a8451cb2a1813ac325e01717d [2022-11-16 11:40:46,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:40:46,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:40:46,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:40:46,794 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:40:46,795 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:40:46,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i [2022-11-16 11:40:46,891 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8/data/75d83494c/f2f299b0e0f249a2b63cb332ea5bcb29/FLAG9e6a2bd0e [2022-11-16 11:40:47,983 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:40:47,983 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i [2022-11-16 11:40:48,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8/data/75d83494c/f2f299b0e0f249a2b63cb332ea5bcb29/FLAG9e6a2bd0e [2022-11-16 11:40:48,268 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8/data/75d83494c/f2f299b0e0f249a2b63cb332ea5bcb29 [2022-11-16 11:40:48,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:40:48,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:40:48,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:40:48,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:40:48,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:40:48,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:40:48" (1/1) ... [2022-11-16 11:40:48,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4023c4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:48, skipping insertion in model container [2022-11-16 11:40:48,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:40:48" (1/1) ... [2022-11-16 11:40:48,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:40:48,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:40:52,497 WARN L229 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_77cf8494-8682-49d9-9d9b-30abc65b64a6/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i[353005,353018] [2022-11-16 11:40:52,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:40:52,789 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:40:53,400 WARN L229 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_77cf8494-8682-49d9-9d9b-30abc65b64a6/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i[353005,353018] [2022-11-16 11:40:53,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:40:53,852 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:40:53,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:53 WrapperNode [2022-11-16 11:40:53,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:40:53,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:40:53,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:40:53,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:40:53,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:53" (1/1) ... [2022-11-16 11:40:54,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:53" (1/1) ... [2022-11-16 11:40:54,431 INFO L138 Inliner]: procedures = 511, calls = 3849, calls flagged for inlining = 265, calls inlined = 264, statements flattened = 9911 [2022-11-16 11:40:54,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:40:54,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:40:54,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:40:54,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:40:54,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:53" (1/1) ... [2022-11-16 11:40:54,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:53" (1/1) ... [2022-11-16 11:40:54,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:53" (1/1) ... [2022-11-16 11:40:54,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:53" (1/1) ... [2022-11-16 11:40:54,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:53" (1/1) ... [2022-11-16 11:40:54,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:53" (1/1) ... [2022-11-16 11:40:54,827 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:53" (1/1) ... [2022-11-16 11:40:54,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:53" (1/1) ... [2022-11-16 11:40:54,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:40:54,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:40:54,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:40:54,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:40:54,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:53" (1/1) ... [2022-11-16 11:40:54,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:40:55,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:55,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:40:55,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:40:55,108 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_ref [2022-11-16 11:40:55,109 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_ref [2022-11-16 11:40:55,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 11:40:55,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 11:40:55,109 INFO L130 BoogieDeclarations]: Found specification of procedure ast_drm_freeze [2022-11-16 11:40:55,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_drm_freeze [2022-11-16 11:40:55,110 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_probe_single_connector_modes [2022-11-16 11:40:55,111 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_probe_single_connector_modes [2022-11-16 11:40:55,111 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_dpms [2022-11-16 11:40:55,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_dpms [2022-11-16 11:40:55,111 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_pin [2022-11-16 11:40:55,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_pin [2022-11-16 11:40:55,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2022-11-16 11:40:55,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2022-11-16 11:40:55,112 INFO L130 BoogieDeclarations]: Found specification of procedure ast_read32 [2022-11-16 11:40:55,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_read32 [2022-11-16 11:40:55,113 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-16 11:40:55,113 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-16 11:40:55,113 INFO L130 BoogieDeclarations]: Found specification of procedure cbr_dll2 [2022-11-16 11:40:55,113 INFO L138 BoogieDeclarations]: Found implementation of procedure cbr_dll2 [2022-11-16 11:40:55,113 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_fixup [2022-11-16 11:40:55,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_fixup [2022-11-16 11:40:55,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:40:55,114 INFO L130 BoogieDeclarations]: Found specification of procedure moutdwm [2022-11-16 11:40:55,114 INFO L138 BoogieDeclarations]: Found implementation of procedure moutdwm [2022-11-16 11:40:55,114 INFO L130 BoogieDeclarations]: Found specification of procedure ast_drm_thaw [2022-11-16 11:40:55,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_drm_thaw [2022-11-16 11:40:55,115 INFO L130 BoogieDeclarations]: Found specification of procedure ast_dirty_update [2022-11-16 11:40:55,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_dirty_update [2022-11-16 11:40:55,115 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_index_reg_mask [2022-11-16 11:40:55,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_index_reg_mask [2022-11-16 11:40:55,116 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kmap [2022-11-16 11:40:55,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kmap [2022-11-16 11:40:55,116 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_placement [2022-11-16 11:40:55,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_placement [2022-11-16 11:40:55,117 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_load_lut [2022-11-16 11:40:55,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_load_lut [2022-11-16 11:40:55,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-16 11:40:55,117 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kunmap [2022-11-16 11:40:55,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kunmap [2022-11-16 11:40:55,118 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_unref [2022-11-16 11:40:55,118 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_unref [2022-11-16 11:40:55,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-16 11:40:55,118 INFO L130 BoogieDeclarations]: Found specification of procedure ast_user_framebuffer_destroy [2022-11-16 11:40:55,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_user_framebuffer_destroy [2022-11-16 11:40:55,119 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_disable [2022-11-16 11:40:55,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_disable [2022-11-16 11:40:55,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:40:55,120 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_set_base [2022-11-16 11:40:55,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_set_base [2022-11-16 11:40:55,121 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-16 11:40:55,121 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-16 11:40:55,121 INFO L130 BoogieDeclarations]: Found specification of procedure mindwm [2022-11-16 11:40:55,121 INFO L138 BoogieDeclarations]: Found implementation of procedure mindwm [2022-11-16 11:40:55,122 INFO L130 BoogieDeclarations]: Found specification of procedure ast_io_read8 [2022-11-16 11:40:55,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_io_read8 [2022-11-16 11:40:55,123 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-16 11:40:55,124 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-16 11:40:55,124 INFO L130 BoogieDeclarations]: Found specification of procedure ast_user_framebuffer_create_handle [2022-11-16 11:40:55,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_user_framebuffer_create_handle [2022-11-16 11:40:55,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:40:55,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:40:55,126 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_gamma_set [2022-11-16 11:40:55,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_gamma_set [2022-11-16 11:40:55,130 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-16 11:40:55,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-16 11:40:55,131 INFO L130 BoogieDeclarations]: Found specification of procedure ast_fbdev_set_suspend [2022-11-16 11:40:55,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_fbdev_set_suspend [2022-11-16 11:40:55,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:40:55,132 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-16 11:40:55,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-16 11:40:55,133 INFO L130 BoogieDeclarations]: Found specification of procedure ast_framebuffer_init [2022-11-16 11:40:55,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_framebuffer_init [2022-11-16 11:40:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure ast_cursor_set [2022-11-16 11:40:55,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_cursor_set [2022-11-16 11:40:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure ast_open_key [2022-11-16 11:40:55,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_open_key [2022-11-16 11:40:55,135 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_validate [2022-11-16 11:40:55,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_validate [2022-11-16 11:40:55,135 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_test_burst2 [2022-11-16 11:40:55,136 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_test_burst2 [2022-11-16 11:40:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_unreserve [2022-11-16 11:40:55,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_unreserve [2022-11-16 11:40:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-16 11:40:55,136 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-16 11:40:55,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:40:55,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:40:55,137 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-16 11:40:55,137 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-16 11:40:55,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-16 11:40:55,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-16 11:40:55,138 INFO L130 BoogieDeclarations]: Found specification of procedure ast_connector_detect [2022-11-16 11:40:55,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_connector_detect [2022-11-16 11:40:55,139 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_prepare [2022-11-16 11:40:55,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_prepare [2022-11-16 11:40:55,140 INFO L130 BoogieDeclarations]: Found specification of procedure ast_get_index_reg_mask [2022-11-16 11:40:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_get_index_reg_mask [2022-11-16 11:40:55,141 INFO L130 BoogieDeclarations]: Found specification of procedure ast_gem_create [2022-11-16 11:40:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_gem_create [2022-11-16 11:40:55,142 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_prepare [2022-11-16 11:40:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_prepare [2022-11-16 11:40:55,143 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-16 11:40:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-16 11:40:55,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-16 11:40:55,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-16 11:40:55,144 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_reserve [2022-11-16 11:40:55,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_reserve [2022-11-16 11:40:55,144 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked [2022-11-16 11:40:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked [2022-11-16 11:40:55,145 INFO L130 BoogieDeclarations]: Found specification of procedure ast_mmap [2022-11-16 11:40:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_mmap [2022-11-16 11:40:55,146 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-16 11:40:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-16 11:40:55,146 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-16 11:40:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-16 11:40:55,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:40:55,147 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_free [2022-11-16 11:40:55,147 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_global_release [2022-11-16 11:40:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2022-11-16 11:40:55,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2022-11-16 11:40:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:40:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure ast_connector_destroy [2022-11-16 11:40:55,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_connector_destroy [2022-11-16 11:40:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_commit [2022-11-16 11:40:55,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_commit [2022-11-16 11:40:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 11:40:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure ast_pm_resume [2022-11-16 11:40:55,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_pm_resume [2022-11-16 11:40:55,162 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-16 11:40:55,163 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-16 11:40:55,163 INFO L130 BoogieDeclarations]: Found specification of procedure ast_io_write8 [2022-11-16 11:40:55,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_io_write8 [2022-11-16 11:40:55,163 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_kmap_obj_virtual [2022-11-16 11:40:55,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_kmap_obj_virtual [2022-11-16 11:40:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_destroy [2022-11-16 11:40:55,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_destroy [2022-11-16 11:40:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_gpu_offset [2022-11-16 11:40:55,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_gpu_offset [2022-11-16 11:40:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure ast_write32 [2022-11-16 11:40:55,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_write32 [2022-11-16 11:40:55,165 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_reset [2022-11-16 11:40:55,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_reset [2022-11-16 11:40:55,165 INFO L130 BoogieDeclarations]: Found specification of procedure ast_gem_free_object [2022-11-16 11:40:55,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_gem_free_object [2022-11-16 11:40:55,166 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked___0 [2022-11-16 11:40:55,166 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked___0 [2022-11-16 11:40:55,166 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_backend_destroy [2022-11-16 11:40:55,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_backend_destroy [2022-11-16 11:40:55,166 INFO L130 BoogieDeclarations]: Found specification of procedure ast_pci_remove [2022-11-16 11:40:55,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_pci_remove [2022-11-16 11:40:55,167 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_connector_dpms [2022-11-16 11:40:55,167 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_connector_dpms [2022-11-16 11:40:55,167 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_set [2022-11-16 11:40:55,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_set [2022-11-16 11:40:55,168 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_test_single2 [2022-11-16 11:40:55,168 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_test_single2 [2022-11-16 11:40:55,168 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-16 11:40:55,168 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-16 11:40:55,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:40:55,169 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_index_reg [2022-11-16 11:40:55,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_index_reg [2022-11-16 11:40:55,169 INFO L130 BoogieDeclarations]: Found specification of procedure cbrdlli_ast2150 [2022-11-16 11:40:55,169 INFO L138 BoogieDeclarations]: Found implementation of procedure cbrdlli_ast2150 [2022-11-16 11:40:55,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-16 11:40:55,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-16 11:40:55,170 INFO L130 BoogieDeclarations]: Found specification of procedure drm_fasync [2022-11-16 11:40:55,170 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_fasync [2022-11-16 11:40:55,170 INFO L130 BoogieDeclarations]: Found specification of procedure drm_framebuffer_cleanup [2022-11-16 11:40:55,170 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_framebuffer_cleanup [2022-11-16 11:40:55,171 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_commit [2022-11-16 11:40:55,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_commit [2022-11-16 11:40:55,171 INFO L130 BoogieDeclarations]: Found specification of procedure drm_crtc_helper_set_config [2022-11-16 11:40:55,171 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_crtc_helper_set_config [2022-11-16 11:40:55,171 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2022-11-16 11:40:55,172 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2022-11-16 11:40:55,172 INFO L130 BoogieDeclarations]: Found specification of procedure ast_cursor_move [2022-11-16 11:40:55,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_cursor_move [2022-11-16 11:40:55,172 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2022-11-16 11:40:55,173 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2022-11-16 11:40:55,173 INFO L130 BoogieDeclarations]: Found specification of procedure drm_poll [2022-11-16 11:40:55,173 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_poll [2022-11-16 11:40:55,173 INFO L130 BoogieDeclarations]: Found specification of procedure drm_mode_connector_update_edid_property [2022-11-16 11:40:55,173 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_mode_connector_update_edid_property [2022-11-16 11:40:55,174 INFO L130 BoogieDeclarations]: Found specification of procedure cbr_scan2 [2022-11-16 11:40:55,174 INFO L138 BoogieDeclarations]: Found implementation of procedure cbr_scan2 [2022-11-16 11:40:55,174 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-16 11:40:55,174 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-16 11:40:55,174 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_tt_unpopulate [2022-11-16 11:40:55,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_tt_unpopulate [2022-11-16 11:40:55,175 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_lookup [2022-11-16 11:40:55,175 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_lookup [2022-11-16 11:40:55,175 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_destroy [2022-11-16 11:40:55,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_destroy [2022-11-16 11:40:55,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:40:56,514 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:40:56,518 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:41:16,577 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ast_gem_init_object_returnLabel#1: main_#t~ret94#1 := ast_gem_init_object_#res#1;assume { :end_inline_ast_gem_init_object } true;assume -2147483648 <= main_#t~ret94#1 && main_#t~ret94#1 <= 2147483647;havoc main_#t~ret94#1;~ldv_state_variable_13~0 := 1; [2022-11-16 11:41:16,737 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:41:16,768 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:41:16,768 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:41:16,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:41:16 BoogieIcfgContainer [2022-11-16 11:41:16,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:41:16,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:41:16,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:41:16,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:41:16,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:40:48" (1/3) ... [2022-11-16 11:41:16,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e55bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:41:16, skipping insertion in model container [2022-11-16 11:41:16,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:53" (2/3) ... [2022-11-16 11:41:16,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e55bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:41:16, skipping insertion in model container [2022-11-16 11:41:16,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:41:16" (3/3) ... [2022-11-16 11:41:16,796 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i [2022-11-16 11:41:16,822 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:41:16,822 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:41:16,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:41:16,958 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;@7595d6b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:41:16,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:41:16,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 2689 states, 1952 states have (on average 1.4656762295081966) internal successors, (2861), 2010 states have internal predecessors, (2861), 647 states have call successors, (647), 88 states have call predecessors, (647), 88 states have return successors, (647), 627 states have call predecessors, (647), 647 states have call successors, (647) [2022-11-16 11:41:16,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:41:17,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:17,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:17,003 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:17,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:17,014 INFO L85 PathProgramCache]: Analyzing trace with hash -463412850, now seen corresponding path program 1 times [2022-11-16 11:41:17,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:17,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906591411] [2022-11-16 11:41:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:17,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:18,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:18,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906591411] [2022-11-16 11:41:18,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906591411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:18,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:18,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:41:18,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433412427] [2022-11-16 11:41:18,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:18,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:41:18,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:18,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:41:18,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:18,167 INFO L87 Difference]: Start difference. First operand has 2689 states, 1952 states have (on average 1.4656762295081966) internal successors, (2861), 2010 states have internal predecessors, (2861), 647 states have call successors, (647), 88 states have call predecessors, (647), 88 states have return successors, (647), 627 states have call predecessors, (647), 647 states have call successors, (647) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:18,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:18,980 INFO L93 Difference]: Finished difference Result 8030 states and 12544 transitions. [2022-11-16 11:41:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:41:18,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-16 11:41:18,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:19,062 INFO L225 Difference]: With dead ends: 8030 [2022-11-16 11:41:19,062 INFO L226 Difference]: Without dead ends: 5338 [2022-11-16 11:41:19,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:19,101 INFO L413 NwaCegarLoop]: 4777 mSDtfsCounter, 4088 mSDsluCounter, 4112 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 8889 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:19,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 8889 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:41:19,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2022-11-16 11:41:19,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 5332. [2022-11-16 11:41:19,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5332 states, 3874 states have (on average 1.458957150232318) internal successors, (5652), 3976 states have internal predecessors, (5652), 1283 states have call successors, (1283), 175 states have call predecessors, (1283), 174 states have return successors, (1272), 1232 states have call predecessors, (1272), 1272 states have call successors, (1272) [2022-11-16 11:41:19,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5332 states to 5332 states and 8207 transitions. [2022-11-16 11:41:19,658 INFO L78 Accepts]: Start accepts. Automaton has 5332 states and 8207 transitions. Word has length 18 [2022-11-16 11:41:19,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:19,660 INFO L495 AbstractCegarLoop]: Abstraction has 5332 states and 8207 transitions. [2022-11-16 11:41:19,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:19,661 INFO L276 IsEmpty]: Start isEmpty. Operand 5332 states and 8207 transitions. [2022-11-16 11:41:19,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 11:41:19,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:19,669 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] [2022-11-16 11:41:19,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:41:19,669 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:19,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:19,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1872870399, now seen corresponding path program 1 times [2022-11-16 11:41:19,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:19,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687943194] [2022-11-16 11:41:19,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:19,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:20,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:20,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687943194] [2022-11-16 11:41:20,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687943194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:20,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:20,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:41:20,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053257036] [2022-11-16 11:41:20,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:20,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:41:20,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:20,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:41:20,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:41:20,501 INFO L87 Difference]: Start difference. First operand 5332 states and 8207 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:21,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:21,013 INFO L93 Difference]: Finished difference Result 10681 states and 16438 transitions. [2022-11-16 11:41:21,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:41:21,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-16 11:41:21,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:21,060 INFO L225 Difference]: With dead ends: 10681 [2022-11-16 11:41:21,060 INFO L226 Difference]: Without dead ends: 5352 [2022-11-16 11:41:21,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:41:21,093 INFO L413 NwaCegarLoop]: 4122 mSDtfsCounter, 34 mSDsluCounter, 8239 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 12361 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:21,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 12361 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:41:21,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5352 states. [2022-11-16 11:41:21,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5352 to 5335. [2022-11-16 11:41:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5335 states, 3877 states have (on average 1.458602011864844) internal successors, (5655), 3979 states have internal predecessors, (5655), 1283 states have call successors, (1283), 175 states have call predecessors, (1283), 174 states have return successors, (1272), 1232 states have call predecessors, (1272), 1272 states have call successors, (1272) [2022-11-16 11:41:21,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5335 states to 5335 states and 8210 transitions. [2022-11-16 11:41:21,461 INFO L78 Accepts]: Start accepts. Automaton has 5335 states and 8210 transitions. Word has length 22 [2022-11-16 11:41:21,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:21,461 INFO L495 AbstractCegarLoop]: Abstraction has 5335 states and 8210 transitions. [2022-11-16 11:41:21,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:21,462 INFO L276 IsEmpty]: Start isEmpty. Operand 5335 states and 8210 transitions. [2022-11-16 11:41:21,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 11:41:21,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:21,465 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] [2022-11-16 11:41:21,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:41:21,466 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:21,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:21,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1930128701, now seen corresponding path program 1 times [2022-11-16 11:41:21,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:21,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769154624] [2022-11-16 11:41:21,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:21,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:22,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:22,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769154624] [2022-11-16 11:41:22,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769154624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:22,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:22,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:41:22,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830910933] [2022-11-16 11:41:22,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:22,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:41:22,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:22,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:41:22,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:22,049 INFO L87 Difference]: Start difference. First operand 5335 states and 8210 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:22,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:22,339 INFO L93 Difference]: Finished difference Result 5337 states and 8211 transitions. [2022-11-16 11:41:22,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:41:22,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-16 11:41:22,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:22,372 INFO L225 Difference]: With dead ends: 5337 [2022-11-16 11:41:22,373 INFO L226 Difference]: Without dead ends: 5334 [2022-11-16 11:41:22,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:22,387 INFO L413 NwaCegarLoop]: 4122 mSDtfsCounter, 4104 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4104 SdHoareTripleChecker+Valid, 4122 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:22,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4104 Valid, 4122 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:41:22,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5334 states. [2022-11-16 11:41:22,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5334 to 5334. [2022-11-16 11:41:22,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5334 states, 3877 states have (on average 1.4583440804745937) internal successors, (5654), 3978 states have internal predecessors, (5654), 1282 states have call successors, (1282), 175 states have call predecessors, (1282), 174 states have return successors, (1272), 1232 states have call predecessors, (1272), 1272 states have call successors, (1272) [2022-11-16 11:41:22,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5334 states to 5334 states and 8208 transitions. [2022-11-16 11:41:22,772 INFO L78 Accepts]: Start accepts. Automaton has 5334 states and 8208 transitions. Word has length 22 [2022-11-16 11:41:22,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:22,772 INFO L495 AbstractCegarLoop]: Abstraction has 5334 states and 8208 transitions. [2022-11-16 11:41:22,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:22,773 INFO L276 IsEmpty]: Start isEmpty. Operand 5334 states and 8208 transitions. [2022-11-16 11:41:22,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 11:41:22,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:22,775 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] [2022-11-16 11:41:22,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:41:22,776 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:22,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:22,779 INFO L85 PathProgramCache]: Analyzing trace with hash -2125754380, now seen corresponding path program 1 times [2022-11-16 11:41:22,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:22,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109257598] [2022-11-16 11:41:22,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:22,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:23,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:23,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109257598] [2022-11-16 11:41:23,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109257598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:23,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:23,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:41:23,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366540185] [2022-11-16 11:41:23,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:23,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:41:23,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:23,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:41:23,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:23,180 INFO L87 Difference]: Start difference. First operand 5334 states and 8208 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:23,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:23,807 INFO L93 Difference]: Finished difference Result 15423 states and 23762 transitions. [2022-11-16 11:41:23,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:41:23,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-16 11:41:23,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:23,903 INFO L225 Difference]: With dead ends: 15423 [2022-11-16 11:41:23,903 INFO L226 Difference]: Without dead ends: 10092 [2022-11-16 11:41:23,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:23,944 INFO L413 NwaCegarLoop]: 4913 mSDtfsCounter, 3684 mSDsluCounter, 4098 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3684 SdHoareTripleChecker+Valid, 9011 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:23,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3684 Valid, 9011 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:41:23,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10092 states. [2022-11-16 11:41:24,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10092 to 10067. [2022-11-16 11:41:24,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10067 states, 7284 states have (on average 1.4623833058758924) internal successors, (10652), 7475 states have internal predecessors, (10652), 2442 states have call successors, (2442), 341 states have call predecessors, (2442), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2022-11-16 11:41:24,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10067 states to 10067 states and 15526 transitions. [2022-11-16 11:41:24,805 INFO L78 Accepts]: Start accepts. Automaton has 10067 states and 15526 transitions. Word has length 23 [2022-11-16 11:41:24,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:24,806 INFO L495 AbstractCegarLoop]: Abstraction has 10067 states and 15526 transitions. [2022-11-16 11:41:24,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:24,806 INFO L276 IsEmpty]: Start isEmpty. Operand 10067 states and 15526 transitions. [2022-11-16 11:41:24,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 11:41:24,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:24,808 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] [2022-11-16 11:41:24,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:41:24,809 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:24,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:24,809 INFO L85 PathProgramCache]: Analyzing trace with hash -296649459, now seen corresponding path program 1 times [2022-11-16 11:41:24,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:24,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713171547] [2022-11-16 11:41:24,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:24,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:25,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:25,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:25,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713171547] [2022-11-16 11:41:25,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713171547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:25,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:25,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:41:25,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550693008] [2022-11-16 11:41:25,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:25,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:41:25,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:25,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:41:25,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:25,275 INFO L87 Difference]: Start difference. First operand 10067 states and 15526 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:25,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:25,867 INFO L93 Difference]: Finished difference Result 10069 states and 15527 transitions. [2022-11-16 11:41:25,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:41:25,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-16 11:41:25,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:25,916 INFO L225 Difference]: With dead ends: 10069 [2022-11-16 11:41:25,917 INFO L226 Difference]: Without dead ends: 10066 [2022-11-16 11:41:25,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:25,925 INFO L413 NwaCegarLoop]: 4120 mSDtfsCounter, 4101 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4101 SdHoareTripleChecker+Valid, 4120 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:25,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4101 Valid, 4120 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:41:25,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10066 states. [2022-11-16 11:41:26,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10066 to 10066. [2022-11-16 11:41:26,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10066 states, 7284 states have (on average 1.46224601867106) internal successors, (10651), 7474 states have internal predecessors, (10651), 2441 states have call successors, (2441), 341 states have call predecessors, (2441), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2022-11-16 11:41:26,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10066 states to 10066 states and 15524 transitions. [2022-11-16 11:41:26,714 INFO L78 Accepts]: Start accepts. Automaton has 10066 states and 15524 transitions. Word has length 23 [2022-11-16 11:41:26,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:26,715 INFO L495 AbstractCegarLoop]: Abstraction has 10066 states and 15524 transitions. [2022-11-16 11:41:26,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:26,715 INFO L276 IsEmpty]: Start isEmpty. Operand 10066 states and 15524 transitions. [2022-11-16 11:41:26,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 11:41:26,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:26,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:26,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:41:26,719 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:26,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:26,720 INFO L85 PathProgramCache]: Analyzing trace with hash -607290816, now seen corresponding path program 1 times [2022-11-16 11:41:26,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:26,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426354105] [2022-11-16 11:41:26,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:26,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:27,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:27,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:27,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426354105] [2022-11-16 11:41:27,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426354105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:27,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:27,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:41:27,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927232351] [2022-11-16 11:41:27,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:27,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:41:27,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:27,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:41:27,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:27,089 INFO L87 Difference]: Start difference. First operand 10066 states and 15524 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:27,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:27,694 INFO L93 Difference]: Finished difference Result 10068 states and 15525 transitions. [2022-11-16 11:41:27,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:41:27,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-16 11:41:27,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:27,735 INFO L225 Difference]: With dead ends: 10068 [2022-11-16 11:41:27,736 INFO L226 Difference]: Without dead ends: 10065 [2022-11-16 11:41:27,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:27,742 INFO L413 NwaCegarLoop]: 4118 mSDtfsCounter, 4098 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4118 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:27,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4118 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:41:27,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10065 states. [2022-11-16 11:41:28,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10065 to 10065. [2022-11-16 11:41:28,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10065 states, 7284 states have (on average 1.4621087314662273) internal successors, (10650), 7473 states have internal predecessors, (10650), 2440 states have call successors, (2440), 341 states have call predecessors, (2440), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2022-11-16 11:41:28,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10065 states to 10065 states and 15522 transitions. [2022-11-16 11:41:28,635 INFO L78 Accepts]: Start accepts. Automaton has 10065 states and 15522 transitions. Word has length 24 [2022-11-16 11:41:28,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:28,635 INFO L495 AbstractCegarLoop]: Abstraction has 10065 states and 15522 transitions. [2022-11-16 11:41:28,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:28,636 INFO L276 IsEmpty]: Start isEmpty. Operand 10065 states and 15522 transitions. [2022-11-16 11:41:28,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 11:41:28,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:28,638 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] [2022-11-16 11:41:28,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:41:28,638 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:28,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:28,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1647233424, now seen corresponding path program 1 times [2022-11-16 11:41:28,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:28,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726946035] [2022-11-16 11:41:28,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:28,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:28,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:28,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726946035] [2022-11-16 11:41:28,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726946035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:28,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:28,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:41:28,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958278538] [2022-11-16 11:41:28,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:28,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:41:28,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:28,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:41:28,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:28,950 INFO L87 Difference]: Start difference. First operand 10065 states and 15522 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:29,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:29,655 INFO L93 Difference]: Finished difference Result 10067 states and 15523 transitions. [2022-11-16 11:41:29,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:41:29,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-16 11:41:29,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:29,709 INFO L225 Difference]: With dead ends: 10067 [2022-11-16 11:41:29,709 INFO L226 Difference]: Without dead ends: 10064 [2022-11-16 11:41:29,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:29,716 INFO L413 NwaCegarLoop]: 4116 mSDtfsCounter, 4095 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4095 SdHoareTripleChecker+Valid, 4116 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:29,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4095 Valid, 4116 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:41:29,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10064 states. [2022-11-16 11:41:30,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10064 to 10064. [2022-11-16 11:41:30,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10064 states, 7284 states have (on average 1.461971444261395) internal successors, (10649), 7472 states have internal predecessors, (10649), 2439 states have call successors, (2439), 341 states have call predecessors, (2439), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2022-11-16 11:41:30,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10064 states to 10064 states and 15520 transitions. [2022-11-16 11:41:30,761 INFO L78 Accepts]: Start accepts. Automaton has 10064 states and 15520 transitions. Word has length 25 [2022-11-16 11:41:30,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:30,761 INFO L495 AbstractCegarLoop]: Abstraction has 10064 states and 15520 transitions. [2022-11-16 11:41:30,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:30,762 INFO L276 IsEmpty]: Start isEmpty. Operand 10064 states and 15520 transitions. [2022-11-16 11:41:30,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 11:41:30,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:30,765 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] [2022-11-16 11:41:30,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:41:30,766 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:30,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:30,766 INFO L85 PathProgramCache]: Analyzing trace with hash 474288963, now seen corresponding path program 1 times [2022-11-16 11:41:30,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:30,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085673300] [2022-11-16 11:41:30,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:30,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:31,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:31,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:31,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085673300] [2022-11-16 11:41:31,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085673300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:31,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:31,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:41:31,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67847026] [2022-11-16 11:41:31,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:31,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:41:31,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:31,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:41:31,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:31,201 INFO L87 Difference]: Start difference. First operand 10064 states and 15520 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:31,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:31,839 INFO L93 Difference]: Finished difference Result 10080 states and 15530 transitions. [2022-11-16 11:41:31,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:41:31,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-16 11:41:31,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:31,885 INFO L225 Difference]: With dead ends: 10080 [2022-11-16 11:41:31,885 INFO L226 Difference]: Without dead ends: 10076 [2022-11-16 11:41:31,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:31,894 INFO L413 NwaCegarLoop]: 4111 mSDtfsCounter, 4080 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4080 SdHoareTripleChecker+Valid, 4120 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:31,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4080 Valid, 4120 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:41:31,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10076 states. [2022-11-16 11:41:32,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10076 to 10074. [2022-11-16 11:41:32,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10074 states, 7292 states have (on average 1.460778935820077) internal successors, (10652), 7478 states have internal predecessors, (10652), 2437 states have call successors, (2437), 345 states have call predecessors, (2437), 344 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2022-11-16 11:41:32,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10074 states to 10074 states and 15521 transitions. [2022-11-16 11:41:32,905 INFO L78 Accepts]: Start accepts. Automaton has 10074 states and 15521 transitions. Word has length 26 [2022-11-16 11:41:32,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:32,906 INFO L495 AbstractCegarLoop]: Abstraction has 10074 states and 15521 transitions. [2022-11-16 11:41:32,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:32,906 INFO L276 IsEmpty]: Start isEmpty. Operand 10074 states and 15521 transitions. [2022-11-16 11:41:32,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 11:41:32,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:32,910 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] [2022-11-16 11:41:32,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:41:32,911 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:32,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:32,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2092608254, now seen corresponding path program 1 times [2022-11-16 11:41:32,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:32,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488024629] [2022-11-16 11:41:32,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:32,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:33,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:33,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:33,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488024629] [2022-11-16 11:41:33,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488024629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:33,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:33,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:41:33,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401316822] [2022-11-16 11:41:33,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:33,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:41:33,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:33,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:41:33,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:33,336 INFO L87 Difference]: Start difference. First operand 10074 states and 15521 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:34,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:34,782 INFO L93 Difference]: Finished difference Result 30135 states and 46435 transitions. [2022-11-16 11:41:34,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:41:34,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-16 11:41:34,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:34,897 INFO L225 Difference]: With dead ends: 30135 [2022-11-16 11:41:34,897 INFO L226 Difference]: Without dead ends: 20064 [2022-11-16 11:41:34,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:34,956 INFO L413 NwaCegarLoop]: 6003 mSDtfsCounter, 4067 mSDsluCounter, 4095 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4067 SdHoareTripleChecker+Valid, 10098 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:34,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4067 Valid, 10098 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:41:34,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20064 states. [2022-11-16 11:41:37,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20064 to 20044. [2022-11-16 11:41:37,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20044 states, 14502 states have (on average 1.4607640325472349) internal successors, (21184), 14870 states have internal predecessors, (21184), 4857 states have call successors, (4857), 685 states have call predecessors, (4857), 684 states have return successors, (4852), 4692 states have call predecessors, (4852), 4852 states have call successors, (4852) [2022-11-16 11:41:37,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20044 states to 20044 states and 30893 transitions. [2022-11-16 11:41:37,689 INFO L78 Accepts]: Start accepts. Automaton has 20044 states and 30893 transitions. Word has length 29 [2022-11-16 11:41:37,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:37,690 INFO L495 AbstractCegarLoop]: Abstraction has 20044 states and 30893 transitions. [2022-11-16 11:41:37,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:37,690 INFO L276 IsEmpty]: Start isEmpty. Operand 20044 states and 30893 transitions. [2022-11-16 11:41:37,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 11:41:37,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:37,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:37,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:41:37,693 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:37,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:37,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1816978387, now seen corresponding path program 1 times [2022-11-16 11:41:37,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:37,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108090067] [2022-11-16 11:41:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:37,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:38,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:38,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:38,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108090067] [2022-11-16 11:41:38,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108090067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:38,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:38,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:41:38,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370150345] [2022-11-16 11:41:38,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:38,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:41:38,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:38,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:41:38,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:38,036 INFO L87 Difference]: Start difference. First operand 20044 states and 30893 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:40,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:40,218 INFO L93 Difference]: Finished difference Result 41307 states and 63236 transitions. [2022-11-16 11:41:40,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:41:40,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-16 11:41:40,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:40,346 INFO L225 Difference]: With dead ends: 41307 [2022-11-16 11:41:40,346 INFO L226 Difference]: Without dead ends: 21266 [2022-11-16 11:41:40,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:40,442 INFO L413 NwaCegarLoop]: 4179 mSDtfsCounter, 3966 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3966 SdHoareTripleChecker+Valid, 4474 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:40,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3966 Valid, 4474 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:41:40,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21266 states. [2022-11-16 11:41:42,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21266 to 21203. [2022-11-16 11:41:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21203 states, 15250 states have (on average 1.4417704918032788) internal successors, (21987), 15624 states have internal predecessors, (21987), 5044 states have call successors, (5044), 890 states have call predecessors, (5044), 908 states have return successors, (5092), 4900 states have call predecessors, (5092), 5036 states have call successors, (5092) [2022-11-16 11:41:42,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21203 states to 21203 states and 32123 transitions. [2022-11-16 11:41:42,744 INFO L78 Accepts]: Start accepts. Automaton has 21203 states and 32123 transitions. Word has length 27 [2022-11-16 11:41:42,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:42,744 INFO L495 AbstractCegarLoop]: Abstraction has 21203 states and 32123 transitions. [2022-11-16 11:41:42,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:42,745 INFO L276 IsEmpty]: Start isEmpty. Operand 21203 states and 32123 transitions. [2022-11-16 11:41:42,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 11:41:42,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:42,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:42,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:41:42,750 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:42,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:42,750 INFO L85 PathProgramCache]: Analyzing trace with hash 490682438, now seen corresponding path program 1 times [2022-11-16 11:41:42,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:42,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867351176] [2022-11-16 11:41:42,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:42,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:43,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:43,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:43,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867351176] [2022-11-16 11:41:43,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867351176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:43,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:43,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:41:43,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035741153] [2022-11-16 11:41:43,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:43,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:41:43,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:43,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:41:43,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:43,134 INFO L87 Difference]: Start difference. First operand 21203 states and 32123 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:45,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:45,076 INFO L93 Difference]: Finished difference Result 21205 states and 32124 transitions. [2022-11-16 11:41:45,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:41:45,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-16 11:41:45,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:45,181 INFO L225 Difference]: With dead ends: 21205 [2022-11-16 11:41:45,181 INFO L226 Difference]: Without dead ends: 21189 [2022-11-16 11:41:45,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:45,192 INFO L413 NwaCegarLoop]: 4109 mSDtfsCounter, 4084 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4084 SdHoareTripleChecker+Valid, 4109 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:45,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4084 Valid, 4109 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:41:45,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21189 states. [2022-11-16 11:41:47,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21189 to 21189. [2022-11-16 11:41:47,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21189 states, 15237 states have (on average 1.4410316991533767) internal successors, (21957), 15610 states have internal predecessors, (21957), 5043 states have call successors, (5043), 890 states have call predecessors, (5043), 908 states have return successors, (5092), 4900 states have call predecessors, (5092), 5036 states have call successors, (5092) [2022-11-16 11:41:47,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21189 states to 21189 states and 32092 transitions. [2022-11-16 11:41:47,346 INFO L78 Accepts]: Start accepts. Automaton has 21189 states and 32092 transitions. Word has length 28 [2022-11-16 11:41:47,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:47,347 INFO L495 AbstractCegarLoop]: Abstraction has 21189 states and 32092 transitions. [2022-11-16 11:41:47,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:47,347 INFO L276 IsEmpty]: Start isEmpty. Operand 21189 states and 32092 transitions. [2022-11-16 11:41:47,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-16 11:41:47,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:47,371 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:41:47,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:41:47,371 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:47,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:47,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1520408265, now seen corresponding path program 1 times [2022-11-16 11:41:47,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:47,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364208025] [2022-11-16 11:41:47,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:47,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:48,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 11:41:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:48,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 11:41:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:48,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:41:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:48,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:41:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:48,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:41:48,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:48,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364208025] [2022-11-16 11:41:48,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364208025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:48,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:48,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:41:48,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819845622] [2022-11-16 11:41:48,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:48,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:41:48,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:48,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:41:48,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:41:48,272 INFO L87 Difference]: Start difference. First operand 21189 states and 32092 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:41:52,241 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 [] [2022-11-16 11:42:08,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:42:12,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:42:16,280 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 [] [2022-11-16 11:42:29,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:42:29,827 INFO L93 Difference]: Finished difference Result 23648 states and 35263 transitions. [2022-11-16 11:42:29,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:42:29,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2022-11-16 11:42:29,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:42:29,978 INFO L225 Difference]: With dead ends: 23648 [2022-11-16 11:42:29,978 INFO L226 Difference]: Without dead ends: 21712 [2022-11-16 11:42:29,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:42:29,995 INFO L413 NwaCegarLoop]: 1651 mSDtfsCounter, 2697 mSDsluCounter, 3734 mSDsCounter, 0 mSdLazyCounter, 7219 mSolverCounterSat, 1297 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3087 SdHoareTripleChecker+Valid, 5385 SdHoareTripleChecker+Invalid, 8517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1297 IncrementalHoareTripleChecker+Valid, 7219 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:42:29,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3087 Valid, 5385 Invalid, 8517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1297 Valid, 7219 Invalid, 1 Unknown, 0 Unchecked, 39.5s Time] [2022-11-16 11:42:30,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21712 states. [2022-11-16 11:42:32,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21712 to 21065. [2022-11-16 11:42:32,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21065 states, 15163 states have (on average 1.44212886631933) internal successors, (21867), 15536 states have internal predecessors, (21867), 5023 states have call successors, (5023), 880 states have call predecessors, (5023), 878 states have return successors, (5020), 4860 states have call predecessors, (5020), 5020 states have call successors, (5020) [2022-11-16 11:42:32,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21065 states to 21065 states and 31910 transitions. [2022-11-16 11:42:32,215 INFO L78 Accepts]: Start accepts. Automaton has 21065 states and 31910 transitions. Word has length 64 [2022-11-16 11:42:32,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:42:32,216 INFO L495 AbstractCegarLoop]: Abstraction has 21065 states and 31910 transitions. [2022-11-16 11:42:32,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:42:32,216 INFO L276 IsEmpty]: Start isEmpty. Operand 21065 states and 31910 transitions. [2022-11-16 11:42:32,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-16 11:42:32,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:42:32,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:42:32,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:42:32,251 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:42:32,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:42:32,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2068559933, now seen corresponding path program 1 times [2022-11-16 11:42:32,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:42:32,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924461716] [2022-11-16 11:42:32,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:32,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:42:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:32,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:42:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:32,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:42:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:32,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:42:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:32,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:42:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:32,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 11:42:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:32,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:42:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:32,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-16 11:42:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:32,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-16 11:42:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:42:32,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:42:32,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924461716] [2022-11-16 11:42:32,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924461716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:42:32,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:42:32,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:42:32,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351678008] [2022-11-16 11:42:32,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:42:32,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:42:32,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:42:32,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:42:32,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:42:32,782 INFO L87 Difference]: Start difference. First operand 21065 states and 31910 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 11:42:47,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:43:14,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:43:14,647 INFO L93 Difference]: Finished difference Result 64180 states and 97191 transitions. [2022-11-16 11:43:14,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:43:14,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2022-11-16 11:43:14,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:43:14,818 INFO L225 Difference]: With dead ends: 64180 [2022-11-16 11:43:14,819 INFO L226 Difference]: Without dead ends: 43118 [2022-11-16 11:43:14,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:43:14,904 INFO L413 NwaCegarLoop]: 2281 mSDtfsCounter, 7062 mSDsluCounter, 4538 mSDsCounter, 0 mSdLazyCounter, 8612 mSolverCounterSat, 3744 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7618 SdHoareTripleChecker+Valid, 6819 SdHoareTripleChecker+Invalid, 12356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3744 IncrementalHoareTripleChecker+Valid, 8612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:43:14,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7618 Valid, 6819 Invalid, 12356 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3744 Valid, 8612 Invalid, 0 Unknown, 0 Unchecked, 37.9s Time] [2022-11-16 11:43:14,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43118 states. [2022-11-16 11:43:18,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43118 to 41879. [2022-11-16 11:43:18,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41879 states, 30171 states have (on average 1.4424778761061947) internal successors, (43521), 30916 states have internal predecessors, (43521), 9961 states have call successors, (9961), 1748 states have call predecessors, (9961), 1746 states have return successors, (9958), 9638 states have call predecessors, (9958), 9958 states have call successors, (9958) [2022-11-16 11:43:18,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41879 states to 41879 states and 63440 transitions. [2022-11-16 11:43:18,757 INFO L78 Accepts]: Start accepts. Automaton has 41879 states and 63440 transitions. Word has length 94 [2022-11-16 11:43:18,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:43:18,758 INFO L495 AbstractCegarLoop]: Abstraction has 41879 states and 63440 transitions. [2022-11-16 11:43:18,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 11:43:18,758 INFO L276 IsEmpty]: Start isEmpty. Operand 41879 states and 63440 transitions. [2022-11-16 11:43:19,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-16 11:43:19,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:43:19,032 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:19,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:43:19,032 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:43:19,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:19,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1426440427, now seen corresponding path program 1 times [2022-11-16 11:43:19,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:19,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132918053] [2022-11-16 11:43:19,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:19,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:19,163 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:43:19,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538214545] [2022-11-16 11:43:19,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:19,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:19,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:19,171 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:43:19,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:43:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:20,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 4850 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:43:20,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:43:21,012 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 11:43:21,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:43:21,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:21,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132918053] [2022-11-16 11:43:21,013 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:43:21,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538214545] [2022-11-16 11:43:21,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538214545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:21,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:21,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:43:21,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568005091] [2022-11-16 11:43:21,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:21,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:43:21,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:21,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:43:21,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:43:21,015 INFO L87 Difference]: Start difference. First operand 41879 states and 63440 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:43:24,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:43:24,460 INFO L93 Difference]: Finished difference Result 95556 states and 146118 transitions. [2022-11-16 11:43:24,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:43:24,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 105 [2022-11-16 11:43:24,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:43:24,629 INFO L225 Difference]: With dead ends: 95556 [2022-11-16 11:43:24,629 INFO L226 Difference]: Without dead ends: 53680 [2022-11-16 11:43:24,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:43:24,748 INFO L413 NwaCegarLoop]: 5438 mSDtfsCounter, 1153 mSDsluCounter, 15084 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 20522 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:43:24,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1297 Valid, 20522 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:43:24,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53680 states. [2022-11-16 11:43:28,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53680 to 41911. [2022-11-16 11:43:28,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41911 states, 30195 states have (on average 1.4421261798310978) internal successors, (43545), 30940 states have internal predecessors, (43545), 9961 states have call successors, (9961), 1748 states have call predecessors, (9961), 1754 states have return successors, (9982), 9646 states have call predecessors, (9982), 9958 states have call successors, (9982) [2022-11-16 11:43:28,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41911 states to 41911 states and 63488 transitions. [2022-11-16 11:43:28,500 INFO L78 Accepts]: Start accepts. Automaton has 41911 states and 63488 transitions. Word has length 105 [2022-11-16 11:43:28,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:43:28,501 INFO L495 AbstractCegarLoop]: Abstraction has 41911 states and 63488 transitions. [2022-11-16 11:43:28,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:43:28,501 INFO L276 IsEmpty]: Start isEmpty. Operand 41911 states and 63488 transitions. [2022-11-16 11:43:28,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-16 11:43:28,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:43:28,564 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:28,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:43:28,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77cf8494-8682-49d9-9d9b-30abc65b64a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:28,790 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:43:28,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:28,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1516648962, now seen corresponding path program 1 times [2022-11-16 11:43:28,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:28,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559793203] [2022-11-16 11:43:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:28,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:29,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 11:43:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:29,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:43:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:29,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:43:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:29,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 11:43:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:29,605 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 11:43:29,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:29,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559793203] [2022-11-16 11:43:29,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559793203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:29,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:29,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:43:29,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29352832] [2022-11-16 11:43:29,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:29,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:43:29,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:29,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:43:29,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:43:29,610 INFO L87 Difference]: Start difference. First operand 41911 states and 63488 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 11:43:33,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:43:46,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:43:54,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:43:57,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:44:11,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:11,914 INFO L93 Difference]: Finished difference Result 104822 states and 158805 transitions. [2022-11-16 11:44:11,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:44:11,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 98 [2022-11-16 11:44:11,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:12,141 INFO L225 Difference]: With dead ends: 104822 [2022-11-16 11:44:12,141 INFO L226 Difference]: Without dead ends: 62914 [2022-11-16 11:44:12,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:44:12,251 INFO L413 NwaCegarLoop]: 2768 mSDtfsCounter, 5180 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 7678 mSolverCounterSat, 1736 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5803 SdHoareTripleChecker+Valid, 6258 SdHoareTripleChecker+Invalid, 9415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1736 IncrementalHoareTripleChecker+Valid, 7678 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:12,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5803 Valid, 6258 Invalid, 9415 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1736 Valid, 7678 Invalid, 1 Unknown, 0 Unchecked, 36.4s Time] [2022-11-16 11:44:12,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62914 states. [2022-11-16 11:44:16,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62914 to 62563. [2022-11-16 11:44:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62563 states, 45103 states have (on average 1.442365252865663) internal successors, (65055), 46220 states have internal predecessors, (65055), 14831 states have call successors, (14831), 2618 states have call predecessors, (14831), 2628 states have return successors, (14888), 14360 states have call predecessors, (14888), 14828 states have call successors, (14888) [2022-11-16 11:44:17,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62563 states to 62563 states and 94774 transitions. [2022-11-16 11:44:17,220 INFO L78 Accepts]: Start accepts. Automaton has 62563 states and 94774 transitions. Word has length 98 [2022-11-16 11:44:17,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:17,220 INFO L495 AbstractCegarLoop]: Abstraction has 62563 states and 94774 transitions. [2022-11-16 11:44:17,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 11:44:17,221 INFO L276 IsEmpty]: Start isEmpty. Operand 62563 states and 94774 transitions. [2022-11-16 11:44:17,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 11:44:17,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:17,282 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:17,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:44:17,282 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:17,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:17,283 INFO L85 PathProgramCache]: Analyzing trace with hash -883490266, now seen corresponding path program 1 times [2022-11-16 11:44:17,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:17,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332992902] [2022-11-16 11:44:17,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:17,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:18,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:44:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:18,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:44:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:18,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:44:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:18,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 11:44:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:18,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:44:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 11:44:18,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:18,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332992902] [2022-11-16 11:44:18,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332992902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:18,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:18,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:44:18,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328298183] [2022-11-16 11:44:18,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:18,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:44:18,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:18,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:44:18,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:44:18,706 INFO L87 Difference]: Start difference. First operand 62563 states and 94774 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:44:23,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:44:25,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:44:27,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:44:39,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:44:41,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:44:42,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:44:44,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:44:45,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:45:13,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:45:30,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:45:41,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:41,429 INFO L93 Difference]: Finished difference Result 122391 states and 186733 transitions. [2022-11-16 11:45:41,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:45:41,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-16 11:45:41,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:41,646 INFO L225 Difference]: With dead ends: 122391 [2022-11-16 11:45:41,646 INFO L226 Difference]: Without dead ends: 59831 [2022-11-16 11:45:41,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:45:41,806 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 2092 mSDsluCounter, 8367 mSDsCounter, 0 mSdLazyCounter, 15594 mSolverCounterSat, 220 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2550 SdHoareTripleChecker+Valid, 9954 SdHoareTripleChecker+Invalid, 15816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 15594 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:41,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2550 Valid, 9954 Invalid, 15816 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [220 Valid, 15594 Invalid, 2 Unknown, 0 Unchecked, 77.7s Time] [2022-11-16 11:45:41,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59831 states. [2022-11-16 11:45:46,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59831 to 59607. [2022-11-16 11:45:46,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59607 states, 43445 states have (on average 1.4476464495338934) internal successors, (62893), 44225 states have internal predecessors, (62893), 14013 states have call successors, (14013), 2137 states have call predecessors, (14013), 2148 states have return successors, (14072), 13856 states have call predecessors, (14072), 14012 states have call successors, (14072) [2022-11-16 11:45:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59607 states to 59607 states and 90978 transitions. [2022-11-16 11:45:46,889 INFO L78 Accepts]: Start accepts. Automaton has 59607 states and 90978 transitions. Word has length 101 [2022-11-16 11:45:46,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:46,889 INFO L495 AbstractCegarLoop]: Abstraction has 59607 states and 90978 transitions. [2022-11-16 11:45:46,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:45:46,890 INFO L276 IsEmpty]: Start isEmpty. Operand 59607 states and 90978 transitions. [2022-11-16 11:45:46,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-16 11:45:46,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:46,974 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:46,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:45:46,975 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:46,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:46,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1700528029, now seen corresponding path program 1 times [2022-11-16 11:45:46,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:46,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145536376] [2022-11-16 11:45:46,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:46,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:45:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:45:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:45:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:45:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:45:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:45:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-16 11:45:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:45:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:45:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-16 11:45:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:45:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:45:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 11:45:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:45:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:45:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-16 11:45:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:45:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:45:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:45:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-16 11:45:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2022-11-16 11:45:47,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:47,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145536376] [2022-11-16 11:45:47,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145536376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:47,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:47,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:45:47,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656458375] [2022-11-16 11:45:47,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:47,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:45:47,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:47,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:45:47,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:45:47,990 INFO L87 Difference]: Start difference. First operand 59607 states and 90978 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)