./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b6dc2-c1e9-497d-a595-cb49a66c55c2/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b6dc2-c1e9-497d-a595-cb49a66c55c2/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_d72b6dc2-c1e9-497d-a595-cb49a66c55c2/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b6dc2-c1e9-497d-a595-cb49a66c55c2/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b6dc2-c1e9-497d-a595-cb49a66c55c2/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_d72b6dc2-c1e9-497d-a595-cb49a66c55c2/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 c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b --- 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 11:36:19,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:36:19,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:36:19,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:36:19,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:36:19,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:36:19,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:36:19,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:36:19,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:36:19,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:36:19,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:36:19,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:36:19,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:36:19,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:36:19,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:36:19,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:36:19,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:36:19,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:36:19,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:36:19,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:36:19,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:36:19,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:36:19,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:36:19,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:36:19,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:36:19,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:36:19,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:36:19,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:36:19,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:36:19,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:36:19,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:36:19,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:36:19,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:36:19,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:36:19,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:36:19,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:36:19,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:36:19,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:36:19,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:36:19,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:36:19,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:36:19,376 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b6dc2-c1e9-497d-a595-cb49a66c55c2/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:36:19,428 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:36:19,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:36:19,429 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:36:19,429 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:36:19,430 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:36:19,430 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:36:19,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:36:19,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:36:19,432 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:36:19,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:36:19,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:36:19,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:36:19,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:36:19,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:36:19,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:36:19,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:36:19,435 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:36:19,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:36:19,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:36:19,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:36:19,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:36:19,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:36:19,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:36:19,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:36:19,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:36:19,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:36:19,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:36:19,438 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:36:19,439 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:36:19,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:36:19,439 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_d72b6dc2-c1e9-497d-a595-cb49a66c55c2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b6dc2-c1e9-497d-a595-cb49a66c55c2/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b [2022-11-16 11:36:19,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:36:19,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:36:19,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:36:19,825 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:36:19,826 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:36:19,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b6dc2-c1e9-497d-a595-cb49a66c55c2/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2022-11-16 11:36:19,912 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b6dc2-c1e9-497d-a595-cb49a66c55c2/bin/uautomizer-tPACEb0tL8/data/d182920c6/84f3b39be3b04fb7af2cad4e245b8ede/FLAGce8c7b564 [2022-11-16 11:36:20,912 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:36:20,913 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b6dc2-c1e9-497d-a595-cb49a66c55c2/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2022-11-16 11:36:20,959 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b6dc2-c1e9-497d-a595-cb49a66c55c2/bin/uautomizer-tPACEb0tL8/data/d182920c6/84f3b39be3b04fb7af2cad4e245b8ede/FLAGce8c7b564 [2022-11-16 11:36:21,308 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b6dc2-c1e9-497d-a595-cb49a66c55c2/bin/uautomizer-tPACEb0tL8/data/d182920c6/84f3b39be3b04fb7af2cad4e245b8ede [2022-11-16 11:36:21,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:36:21,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:36:21,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:36:21,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:36:21,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:36:21,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:36:21" (1/1) ... [2022-11-16 11:36:21,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d8033e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:21, skipping insertion in model container [2022-11-16 11:36:21,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:36:21" (1/1) ... [2022-11-16 11:36:21,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:36:21,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:36:23,356 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_d72b6dc2-c1e9-497d-a595-cb49a66c55c2/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2022-11-16 11:36:23,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:36:23,474 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:36:24,043 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_d72b6dc2-c1e9-497d-a595-cb49a66c55c2/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2022-11-16 11:36:24,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:36:24,153 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:36:24,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:24 WrapperNode [2022-11-16 11:36:24,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:36:24,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:36:24,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:36:24,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:36:24,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:24" (1/1) ... [2022-11-16 11:36:24,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:24" (1/1) ... [2022-11-16 11:36:24,552 INFO L138 Inliner]: procedures = 191, calls = 4706, calls flagged for inlining = 80, calls inlined = 67, statements flattened = 7774 [2022-11-16 11:36:24,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:36:24,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:36:24,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:36:24,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:36:24,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:24" (1/1) ... [2022-11-16 11:36:24,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:24" (1/1) ... [2022-11-16 11:36:24,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:24" (1/1) ... [2022-11-16 11:36:24,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:24" (1/1) ... [2022-11-16 11:36:24,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:24" (1/1) ... [2022-11-16 11:36:24,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:24" (1/1) ... [2022-11-16 11:36:25,094 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:24" (1/1) ... [2022-11-16 11:36:25,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:24" (1/1) ... [2022-11-16 11:36:25,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:36:25,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:36:25,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:36:25,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:36:25,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:24" (1/1) ... [2022-11-16 11:36:25,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:36:25,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b6dc2-c1e9-497d-a595-cb49a66c55c2/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:25,222 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b6dc2-c1e9-497d-a595-cb49a66c55c2/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:25,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b6dc2-c1e9-497d-a595-cb49a66c55c2/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:36:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_probe [2022-11-16 11:36:25,291 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_probe [2022-11-16 11:36:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-16 11:36:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_reg_sync [2022-11-16 11:36:25,292 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_reg_sync [2022-11-16 11:36:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-11-16 11:36:25,292 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-11-16 11:36:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_reg_sync [2022-11-16 11:36:25,292 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_reg_sync [2022-11-16 11:36:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-16 11:36:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-16 11:36:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-16 11:36:25,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-16 11:36:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:36:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-16 11:36:25,294 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-16 11:36:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_write [2022-11-16 11:36:25,294 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_write [2022-11-16 11:36:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-16 11:36:25,294 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-16 11:36:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_ioctl [2022-11-16 11:36:25,295 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_ioctl [2022-11-16 11:36:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_tiocmiwait [2022-11-16 11:36:25,295 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_tiocmiwait [2022-11-16 11:36:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-16 11:36:25,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-16 11:36:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_control_urb [2022-11-16 11:36:25,296 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_control_urb [2022-11-16 11:36:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-16 11:36:25,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-16 11:36:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 11:36:25,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 11:36:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_port_private [2022-11-16 11:36:25,297 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_port_private [2022-11-16 11:36:25,297 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-16 11:36:25,297 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-16 11:36:25,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-16 11:36:25,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-16 11:36:25,297 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-11-16 11:36:25,298 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-11-16 11:36:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_uart_reg [2022-11-16 11:36:25,298 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_uart_reg [2022-11-16 11:36:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2022-11-16 11:36:25,299 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2022-11-16 11:36:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-16 11:36:25,299 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-16 11:36:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2022-11-16 11:36:25,300 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2022-11-16 11:36:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_usb_serial [2022-11-16 11:36:25,300 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_usb_serial [2022-11-16 11:36:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_get_icount [2022-11-16 11:36:25,300 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_get_icount [2022-11-16 11:36:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:36:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_led_async [2022-11-16 11:36:25,301 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_led_async [2022-11-16 11:36:25,302 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-16 11:36:25,302 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-16 11:36:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-16 11:36:25,303 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-16 11:36:25,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-16 11:36:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-16 11:36:25,304 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_termios [2022-11-16 11:36:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_termios [2022-11-16 11:36:25,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-16 11:36:25,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-16 11:36:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_led_sync [2022-11-16 11:36:25,305 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_led_sync [2022-11-16 11:36:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_3 [2022-11-16 11:36:25,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_3 [2022-11-16 11:36:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 11:36:25,307 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 11:36:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-16 11:36:25,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-16 11:36:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 11:36:25,308 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 11:36:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_chars_in_buffer [2022-11-16 11:36:25,309 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_chars_in_buffer [2022-11-16 11:36:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:36:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-11-16 11:36:25,309 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-11-16 11:36:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_throttle [2022-11-16 11:36:25,310 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_throttle [2022-11-16 11:36:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-16 11:36:25,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-16 11:36:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:36:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2022-11-16 11:36:25,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2022-11-16 11:36:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-11-16 11:36:25,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-11-16 11:36:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:36:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:36:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-16 11:36:25,312 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-16 11:36:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit_lock [2022-11-16 11:36:25,313 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit_lock [2022-11-16 11:36:25,313 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_uart_reg [2022-11-16 11:36:25,314 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_uart_reg [2022-11-16 11:36:25,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:36:25,314 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-16 11:36:25,315 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-16 11:36:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-16 11:36:25,315 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-16 11:36:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-16 11:36:25,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-16 11:36:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-16 11:36:25,316 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-16 11:36:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_paranoia_check [2022-11-16 11:36:25,317 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_paranoia_check [2022-11-16 11:36:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_serial_paranoia_check [2022-11-16 11:36:25,317 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_serial_paranoia_check [2022-11-16 11:36:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-16 11:36:25,318 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-16 11:36:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_led_activity [2022-11-16 11:36:25,318 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_led_activity [2022-11-16 11:36:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_bulk_in_callback [2022-11-16 11:36:25,319 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_bulk_in_callback [2022-11-16 11:36:25,319 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_write_room [2022-11-16 11:36:25,320 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_write_room [2022-11-16 11:36:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:36:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 11:36:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_calc_num_ports [2022-11-16 11:36:25,324 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_calc_num_ports [2022-11-16 11:36:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_break [2022-11-16 11:36:25,324 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_break [2022-11-16 11:36:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_tiocmset [2022-11-16 11:36:25,328 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_tiocmset [2022-11-16 11:36:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_tiocmget [2022-11-16 11:36:25,328 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_tiocmget [2022-11-16 11:36:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-16 11:36:25,332 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-16 11:36:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_port_private [2022-11-16 11:36:25,333 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_port_private [2022-11-16 11:36:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_unthrottle [2022-11-16 11:36:25,333 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_unthrottle [2022-11-16 11:36:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-16 11:36:25,333 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-16 11:36:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:36:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2022-11-16 11:36:25,334 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2022-11-16 11:36:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2022-11-16 11:36:25,334 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2022-11-16 11:36:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_remove [2022-11-16 11:36:25,334 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_remove [2022-11-16 11:36:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-16 11:36:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:36:25,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:36:26,326 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:36:26,333 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:36:28,753 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-16 11:37:45,362 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:37:45,395 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:37:45,395 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:37:45,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:37:45 BoogieIcfgContainer [2022-11-16 11:37:45,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:37:45,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:37:45,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:37:45,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:37:45,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:36:21" (1/3) ... [2022-11-16 11:37:45,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f2d8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:37:45, skipping insertion in model container [2022-11-16 11:37:45,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:24" (2/3) ... [2022-11-16 11:37:45,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f2d8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:37:45, skipping insertion in model container [2022-11-16 11:37:45,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:37:45" (3/3) ... [2022-11-16 11:37:45,413 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2022-11-16 11:37:45,432 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:37:45,433 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:37:45,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:37:45,547 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;@2ae2183d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:37:45,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:37:45,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 1738 states, 1237 states have (on average 1.396928051738076) internal successors, (1728), 1260 states have internal predecessors, (1728), 435 states have call successors, (435), 65 states have call predecessors, (435), 64 states have return successors, (430), 424 states have call predecessors, (430), 430 states have call successors, (430) [2022-11-16 11:37:45,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-16 11:37:45,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:37:45,578 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:37:45,579 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:37:45,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:45,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1751956304, now seen corresponding path program 1 times [2022-11-16 11:37:45,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:45,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020772616] [2022-11-16 11:37:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:45,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:46,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:37:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:46,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:46,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:37:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:46,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:37:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:46,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:46,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:37:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:46,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 11:37:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:46,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:46,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:37:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:46,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:37:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:46,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:46,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:37:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:47,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:37:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:47,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:47,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:37:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:47,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:47,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 11:37:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:47,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:47,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:37:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:47,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:47,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:37:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:47,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:47,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-16 11:37:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:47,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:47,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-16 11:37:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:47,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:47,222 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-11-16 11:37:47,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:47,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020772616] [2022-11-16 11:37:47,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020772616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:47,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:47,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:37:47,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522512572] [2022-11-16 11:37:47,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:47,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:37:47,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:47,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:37:47,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:37:47,287 INFO L87 Difference]: Start difference. First operand has 1738 states, 1237 states have (on average 1.396928051738076) internal successors, (1728), 1260 states have internal predecessors, (1728), 435 states have call successors, (435), 65 states have call predecessors, (435), 64 states have return successors, (430), 424 states have call predecessors, (430), 430 states have call successors, (430) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:37:57,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:37:57,347 INFO L93 Difference]: Finished difference Result 3656 states and 5636 transitions. [2022-11-16 11:37:57,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:37:57,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 161 [2022-11-16 11:37:57,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:37:57,382 INFO L225 Difference]: With dead ends: 3656 [2022-11-16 11:37:57,382 INFO L226 Difference]: Without dead ends: 1908 [2022-11-16 11:37:57,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:37:57,411 INFO L413 NwaCegarLoop]: 2308 mSDtfsCounter, 973 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 1506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 3702 SdHoareTripleChecker+Invalid, 2687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1506 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:37:57,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 3702 Invalid, 2687 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1506 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-11-16 11:37:57,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2022-11-16 11:37:57,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1723. [2022-11-16 11:37:57,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1229 states have (on average 1.38893409275834) internal successors, (1707), 1245 states have internal predecessors, (1707), 430 states have call successors, (430), 64 states have call predecessors, (430), 63 states have return successors, (429), 423 states have call predecessors, (429), 429 states have call successors, (429) [2022-11-16 11:37:57,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 2566 transitions. [2022-11-16 11:37:57,660 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 2566 transitions. Word has length 161 [2022-11-16 11:37:57,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:37:57,661 INFO L495 AbstractCegarLoop]: Abstraction has 1723 states and 2566 transitions. [2022-11-16 11:37:57,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:37:57,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 2566 transitions. [2022-11-16 11:37:57,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-16 11:37:57,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:37:57,679 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:37:57,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:37:57,680 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:37:57,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:57,681 INFO L85 PathProgramCache]: Analyzing trace with hash -202868664, now seen corresponding path program 1 times [2022-11-16 11:37:57,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:57,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426015891] [2022-11-16 11:37:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:57,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:37:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:37:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:37:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:37:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 11:37:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:37:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:37:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:37:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:37:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:37:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 11:37:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:37:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:37:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-16 11:37:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-16 11:37:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:37:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:58,816 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-11-16 11:37:58,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:58,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426015891] [2022-11-16 11:37:58,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426015891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:58,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:58,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:37:58,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947043022] [2022-11-16 11:37:58,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:58,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:37:58,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:58,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:37:58,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:37:58,822 INFO L87 Difference]: Start difference. First operand 1723 states and 2566 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-16 11:38:17,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:38:17,377 INFO L93 Difference]: Finished difference Result 3745 states and 5641 transitions. [2022-11-16 11:38:17,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:38:17,378 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 161 [2022-11-16 11:38:17,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:38:17,394 INFO L225 Difference]: With dead ends: 3745 [2022-11-16 11:38:17,394 INFO L226 Difference]: Without dead ends: 2054 [2022-11-16 11:38:17,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:38:17,406 INFO L413 NwaCegarLoop]: 2269 mSDtfsCounter, 863 mSDsluCounter, 4319 mSDsCounter, 0 mSdLazyCounter, 2727 mSolverCounterSat, 1022 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 6588 SdHoareTripleChecker+Invalid, 3749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1022 IncrementalHoareTripleChecker+Valid, 2727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:38:17,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 6588 Invalid, 3749 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1022 Valid, 2727 Invalid, 0 Unknown, 0 Unchecked, 18.2s Time] [2022-11-16 11:38:17,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2022-11-16 11:38:17,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1859. [2022-11-16 11:38:17,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1331 states have (on average 1.3899323816679188) internal successors, (1850), 1356 states have internal predecessors, (1850), 449 states have call successors, (449), 79 states have call predecessors, (449), 78 states have return successors, (448), 436 states have call predecessors, (448), 448 states have call successors, (448) [2022-11-16 11:38:17,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2747 transitions. [2022-11-16 11:38:17,506 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2747 transitions. Word has length 161 [2022-11-16 11:38:17,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:38:17,508 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 2747 transitions. [2022-11-16 11:38:17,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-16 11:38:17,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2747 transitions. [2022-11-16 11:38:17,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-16 11:38:17,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:38:17,511 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:38:17,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:38:17,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:38:17,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:17,512 INFO L85 PathProgramCache]: Analyzing trace with hash -564514080, now seen corresponding path program 1 times [2022-11-16 11:38:17,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:17,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592142901] [2022-11-16 11:38:17,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:17,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:38:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:38:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:38:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:38:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:38:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:38:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 11:38:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:38:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:38:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:38:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:38:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:38:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:38:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:38:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:38:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:38:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 11:38:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:38:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:38:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:38:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:38:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:38:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-16 11:38:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:38:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-16 11:38:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:38:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-16 11:38:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-16 11:38:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-11-16 11:38:18,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:38:18,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592142901] [2022-11-16 11:38:18,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592142901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:38:18,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:38:18,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:38:18,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644543637] [2022-11-16 11:38:18,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:38:18,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:38:18,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:38:18,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:38:18,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:38:18,911 INFO L87 Difference]: Start difference. First operand 1859 states and 2747 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 11:38:59,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:38:59,252 INFO L93 Difference]: Finished difference Result 9805 states and 15073 transitions. [2022-11-16 11:38:59,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:38:59,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 170 [2022-11-16 11:38:59,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:38:59,304 INFO L225 Difference]: With dead ends: 9805 [2022-11-16 11:38:59,305 INFO L226 Difference]: Without dead ends: 7996 [2022-11-16 11:38:59,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:38:59,319 INFO L413 NwaCegarLoop]: 3445 mSDtfsCounter, 10137 mSDsluCounter, 10642 mSDsCounter, 0 mSdLazyCounter, 10034 mSolverCounterSat, 4267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11030 SdHoareTripleChecker+Valid, 14087 SdHoareTripleChecker+Invalid, 14301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4267 IncrementalHoareTripleChecker+Valid, 10034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:38:59,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11030 Valid, 14087 Invalid, 14301 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4267 Valid, 10034 Invalid, 0 Unknown, 0 Unchecked, 39.3s Time] [2022-11-16 11:38:59,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7996 states. [2022-11-16 11:38:59,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7996 to 7295. [2022-11-16 11:38:59,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7295 states, 5244 states have (on average 1.3928299008390541) internal successors, (7304), 5341 states have internal predecessors, (7304), 1745 states have call successors, (1745), 296 states have call predecessors, (1745), 305 states have return successors, (1903), 1705 states have call predecessors, (1903), 1744 states have call successors, (1903) [2022-11-16 11:38:59,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7295 states to 7295 states and 10952 transitions. [2022-11-16 11:38:59,757 INFO L78 Accepts]: Start accepts. Automaton has 7295 states and 10952 transitions. Word has length 170 [2022-11-16 11:38:59,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:38:59,760 INFO L495 AbstractCegarLoop]: Abstraction has 7295 states and 10952 transitions. [2022-11-16 11:38:59,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 11:38:59,760 INFO L276 IsEmpty]: Start isEmpty. Operand 7295 states and 10952 transitions. [2022-11-16 11:38:59,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-16 11:38:59,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:38:59,764 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:38:59,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:38:59,768 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:38:59,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:59,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1484528683, now seen corresponding path program 1 times [2022-11-16 11:38:59,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:59,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678728153] [2022-11-16 11:38:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:59,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:39:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:39:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:39:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:39:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 11:39:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:39:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:39:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:39:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:39:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:39:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 11:39:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:39:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:39:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-16 11:39:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-16 11:39:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-16 11:39:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-16 11:39:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:00,881 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-11-16 11:39:00,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:00,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678728153] [2022-11-16 11:39:00,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678728153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:39:00,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:39:00,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:39:00,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920144892] [2022-11-16 11:39:00,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:00,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:39:00,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:00,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:39:00,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:39:00,884 INFO L87 Difference]: Start difference. First operand 7295 states and 10952 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 11:39:40,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:39:40,575 INFO L93 Difference]: Finished difference Result 38927 states and 60329 transitions. [2022-11-16 11:39:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:39:40,575 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 171 [2022-11-16 11:39:40,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:39:40,777 INFO L225 Difference]: With dead ends: 38927 [2022-11-16 11:39:40,778 INFO L226 Difference]: Without dead ends: 31682 [2022-11-16 11:39:40,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:39:40,830 INFO L413 NwaCegarLoop]: 3420 mSDtfsCounter, 11991 mSDsluCounter, 9230 mSDsCounter, 0 mSdLazyCounter, 8927 mSolverCounterSat, 5226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12873 SdHoareTripleChecker+Valid, 12650 SdHoareTripleChecker+Invalid, 14153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5226 IncrementalHoareTripleChecker+Valid, 8927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:39:40,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12873 Valid, 12650 Invalid, 14153 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5226 Valid, 8927 Invalid, 0 Unknown, 0 Unchecked, 38.0s Time] [2022-11-16 11:39:40,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31682 states. [2022-11-16 11:39:42,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31682 to 29100. [2022-11-16 11:39:42,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29100 states, 20952 states have (on average 1.3920389461626574) internal successors, (29166), 21328 states have internal predecessors, (29166), 6920 states have call successors, (6920), 1166 states have call predecessors, (6920), 1227 states have return successors, (8109), 6787 states have call predecessors, (8109), 6919 states have call successors, (8109) [2022-11-16 11:39:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29100 states to 29100 states and 44195 transitions. [2022-11-16 11:39:42,800 INFO L78 Accepts]: Start accepts. Automaton has 29100 states and 44195 transitions. Word has length 171 [2022-11-16 11:39:42,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:39:42,801 INFO L495 AbstractCegarLoop]: Abstraction has 29100 states and 44195 transitions. [2022-11-16 11:39:42,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 11:39:42,802 INFO L276 IsEmpty]: Start isEmpty. Operand 29100 states and 44195 transitions. [2022-11-16 11:39:42,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-16 11:39:42,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:39:42,806 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:39:42,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:39:42,807 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:39:42,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:42,807 INFO L85 PathProgramCache]: Analyzing trace with hash -901873800, now seen corresponding path program 1 times [2022-11-16 11:39:42,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:42,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591757229] [2022-11-16 11:39:42,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:42,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:39:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:39:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:39:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:39:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 11:39:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:39:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:39:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:39:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:39:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:39:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 11:39:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:39:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:39:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-16 11:39:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-16 11:39:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:39:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-16 11:39:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-16 11:39:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:43,822 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-11-16 11:39:43,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:43,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591757229] [2022-11-16 11:39:43,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591757229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:39:43,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:39:43,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:39:43,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765804557] [2022-11-16 11:39:43,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:43,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:39:43,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:43,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:39:43,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:39:43,825 INFO L87 Difference]: Start difference. First operand 29100 states and 44195 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 11:40:14,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:14,409 INFO L93 Difference]: Finished difference Result 155400 states and 242490 transitions. [2022-11-16 11:40:14,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:40:14,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 172 [2022-11-16 11:40:14,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:15,607 INFO L225 Difference]: With dead ends: 155400 [2022-11-16 11:40:15,608 INFO L226 Difference]: Without dead ends: 126350 [2022-11-16 11:40:15,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:40:15,939 INFO L413 NwaCegarLoop]: 3414 mSDtfsCounter, 9217 mSDsluCounter, 10992 mSDsCounter, 0 mSdLazyCounter, 7736 mSolverCounterSat, 4348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10103 SdHoareTripleChecker+Valid, 14406 SdHoareTripleChecker+Invalid, 12084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4348 IncrementalHoareTripleChecker+Valid, 7736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:15,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10103 Valid, 14406 Invalid, 12084 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4348 Valid, 7736 Invalid, 0 Unknown, 0 Unchecked, 26.1s Time] [2022-11-16 11:40:16,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126350 states. [2022-11-16 11:40:22,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126350 to 116492. [2022-11-16 11:40:22,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116492 states, 83964 states have (on average 1.390548330236768) internal successors, (116756), 85412 states have internal predecessors, (116756), 27566 states have call successors, (27566), 4646 states have call predecessors, (27566), 4961 states have return successors, (34239), 27139 states have call predecessors, (34239), 27565 states have call successors, (34239) [2022-11-16 11:40:24,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116492 states to 116492 states and 178561 transitions. [2022-11-16 11:40:24,345 INFO L78 Accepts]: Start accepts. Automaton has 116492 states and 178561 transitions. Word has length 172 [2022-11-16 11:40:24,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:24,346 INFO L495 AbstractCegarLoop]: Abstraction has 116492 states and 178561 transitions. [2022-11-16 11:40:24,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 11:40:24,346 INFO L276 IsEmpty]: Start isEmpty. Operand 116492 states and 178561 transitions. [2022-11-16 11:40:24,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-16 11:40:24,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:24,348 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:40:24,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:40:24,349 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:24,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:24,350 INFO L85 PathProgramCache]: Analyzing trace with hash 946841859, now seen corresponding path program 1 times [2022-11-16 11:40:24,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:24,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459807417] [2022-11-16 11:40:24,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:24,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:40:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:40:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:40:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:40:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:40:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:40:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 11:40:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:40:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:40:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:40:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:40:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:40:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:40:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:40:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:40:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:40:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 11:40:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:40:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:40:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:40:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:40:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:40:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-16 11:40:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:40:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-16 11:40:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:40:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-16 11:40:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-16 11:40:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,817 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-11-16 11:40:25,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:25,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459807417] [2022-11-16 11:40:25,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459807417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:25,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:25,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:40:25,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917730830] [2022-11-16 11:40:25,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:25,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:40:25,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:25,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:40:25,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:40:25,824 INFO L87 Difference]: Start difference. First operand 116492 states and 178561 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 11:41:21,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:21,956 INFO L93 Difference]: Finished difference Result 616250 states and 968444 transitions. [2022-11-16 11:41:21,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:41:21,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 173 [2022-11-16 11:41:21,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:25,640 INFO L225 Difference]: With dead ends: 616250 [2022-11-16 11:41:25,640 INFO L226 Difference]: Without dead ends: 499808 [2022-11-16 11:41:26,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:41:26,272 INFO L413 NwaCegarLoop]: 3441 mSDtfsCounter, 10231 mSDsluCounter, 11432 mSDsCounter, 0 mSdLazyCounter, 9462 mSolverCounterSat, 3721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11118 SdHoareTripleChecker+Valid, 14873 SdHoareTripleChecker+Invalid, 13183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3721 IncrementalHoareTripleChecker+Valid, 9462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:26,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11118 Valid, 14873 Invalid, 13183 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3721 Valid, 9462 Invalid, 0 Unknown, 0 Unchecked, 36.7s Time] [2022-11-16 11:41:26,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499808 states.