./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f7cd2f1-130e-4b45-a118-e3bc39e9291f/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f7cd2f1-130e-4b45-a118-e3bc39e9291f/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f7cd2f1-130e-4b45-a118-e3bc39e9291f/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f7cd2f1-130e-4b45-a118-e3bc39e9291f/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f7cd2f1-130e-4b45-a118-e3bc39e9291f/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f7cd2f1-130e-4b45-a118-e3bc39e9291f/bin/uautomizer-J5u9QxTXDZ --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 99f9870c0a11847528222b5446256dd4069d375e1dee3e428847b909838b4c1b --- 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-dbf71c6-m [2022-10-17 10:34:56,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:34:56,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:34:56,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:34:56,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:34:57,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:34:57,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:34:57,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:34:57,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:34:57,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:34:57,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:34:57,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:34:57,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:34:57,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:34:57,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:34:57,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:34:57,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:34:57,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:34:57,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:34:57,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:34:57,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:34:57,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:34:57,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:34:57,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:34:57,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:34:57,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:34:57,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:34:57,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:34:57,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:34:57,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:34:57,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:34:57,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:34:57,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:34:57,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:34:57,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:34:57,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:34:57,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:34:57,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:34:57,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:34:57,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:34:57,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:34:57,073 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f7cd2f1-130e-4b45-a118-e3bc39e9291f/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:34:57,113 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:34:57,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:34:57,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:34:57,115 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:34:57,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:34:57,116 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:34:57,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:34:57,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:34:57,117 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:34:57,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:34:57,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:34:57,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:34:57,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:34:57,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:34:57,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:34:57,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:34:57,120 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:34:57,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:34:57,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:34:57,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:34:57,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:34:57,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:34:57,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:34:57,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:34:57,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:34:57,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:34:57,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:34:57,122 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:34:57,122 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:34:57,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:34:57,123 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_6f7cd2f1-130e-4b45-a118-e3bc39e9291f/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f7cd2f1-130e-4b45-a118-e3bc39e9291f/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f9870c0a11847528222b5446256dd4069d375e1dee3e428847b909838b4c1b [2022-10-17 10:34:57,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:34:57,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:34:57,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:34:57,427 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:34:57,428 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:34:57,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f7cd2f1-130e-4b45-a118-e3bc39e9291f/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i [2022-10-17 10:34:57,500 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f7cd2f1-130e-4b45-a118-e3bc39e9291f/bin/uautomizer-J5u9QxTXDZ/data/7a0ac6a71/5e87624a39e04850b3e6df0a4b76dbd9/FLAGebb5e5d69 [2022-10-17 10:34:58,230 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:34:58,230 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f7cd2f1-130e-4b45-a118-e3bc39e9291f/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i [2022-10-17 10:34:58,273 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f7cd2f1-130e-4b45-a118-e3bc39e9291f/bin/uautomizer-J5u9QxTXDZ/data/7a0ac6a71/5e87624a39e04850b3e6df0a4b76dbd9/FLAGebb5e5d69 [2022-10-17 10:34:58,319 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f7cd2f1-130e-4b45-a118-e3bc39e9291f/bin/uautomizer-J5u9QxTXDZ/data/7a0ac6a71/5e87624a39e04850b3e6df0a4b76dbd9 [2022-10-17 10:34:58,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:34:58,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:34:58,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:34:58,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:34:58,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:34:58,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:34:58" (1/1) ... [2022-10-17 10:34:58,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c336c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:58, skipping insertion in model container [2022-10-17 10:34:58,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:34:58" (1/1) ... [2022-10-17 10:34:58,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:34:58,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:34:59,395 WARN L230 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_6f7cd2f1-130e-4b45-a118-e3bc39e9291f/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i[164521,164534] [2022-10-17 10:34:59,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:34:59,834 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:34:59,993 WARN L230 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_6f7cd2f1-130e-4b45-a118-e3bc39e9291f/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i[164521,164534] [2022-10-17 10:35:00,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:35:00,243 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:35:00,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:00 WrapperNode [2022-10-17 10:35:00,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:35:00,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:35:00,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:35:00,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:35:00,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:00" (1/1) ... [2022-10-17 10:35:00,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:00" (1/1) ... [2022-10-17 10:35:00,442 INFO L138 Inliner]: procedures = 157, calls = 675, calls flagged for inlining = 60, calls inlined = 51, statements flattened = 1529 [2022-10-17 10:35:00,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:35:00,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:35:00,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:35:00,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:35:00,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:00" (1/1) ... [2022-10-17 10:35:00,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:00" (1/1) ... [2022-10-17 10:35:00,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:00" (1/1) ... [2022-10-17 10:35:00,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:00" (1/1) ... [2022-10-17 10:35:00,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:00" (1/1) ... [2022-10-17 10:35:00,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:00" (1/1) ... [2022-10-17 10:35:00,583 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:00" (1/1) ... [2022-10-17 10:35:00,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:00" (1/1) ... [2022-10-17 10:35:00,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:35:00,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:35:00,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:35:00,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:35:00,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:00" (1/1) ... [2022-10-17 10:35:00,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:35:00,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f7cd2f1-130e-4b45-a118-e3bc39e9291f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:35:00,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f7cd2f1-130e-4b45-a118-e3bc39e9291f/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:35:00,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f7cd2f1-130e-4b45-a118-e3bc39e9291f/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:35:00,756 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_schedule_event [2022-10-17 10:35:00,756 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_schedule_event [2022-10-17 10:35:00,756 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freebcshw [2022-10-17 10:35:00,756 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freebcshw [2022-10-17 10:35:00,756 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_set_modem_ctrl [2022-10-17 10:35:00,757 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_set_modem_ctrl [2022-10-17 10:35:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 10:35:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2022-10-17 10:35:00,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2022-10-17 10:35:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_reinitbcshw [2022-10-17 10:35:00,758 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_reinitbcshw [2022-10-17 10:35:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 10:35:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 10:35:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-17 10:35:00,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-17 10:35:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:35:00,759 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_m10x_send_skb [2022-10-17 10:35:00,759 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_m10x_send_skb [2022-10-17 10:35:00,759 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_brkchars [2022-10-17 10:35:00,759 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_brkchars [2022-10-17 10:35:00,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-10-17 10:35:00,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-10-17 10:35:00,760 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_add_event [2022-10-17 10:35:00,760 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_add_event [2022-10-17 10:35:00,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 10:35:00,760 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 10:35:00,760 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-17 10:35:00,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-17 10:35:00,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 10:35:00,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 10:35:00,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-10-17 10:35:00,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-10-17 10:35:00,761 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_close_bchannel [2022-10-17 10:35:00,762 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_close_bchannel [2022-10-17 10:35:00,762 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_resume [2022-10-17 10:35:00,762 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_resume [2022-10-17 10:35:00,762 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-10-17 10:35:00,763 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-10-17 10:35:00,763 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_baud_rate [2022-10-17 10:35:00,763 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_baud_rate [2022-10-17 10:35:00,763 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initcshw [2022-10-17 10:35:00,763 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initcshw [2022-10-17 10:35:00,763 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 10:35:00,764 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 10:35:00,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:35:00,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 10:35:00,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 10:35:00,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 10:35:00,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 10:35:00,765 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initbcshw [2022-10-17 10:35:00,765 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initbcshw [2022-10-17 10:35:00,765 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_dbg_buffer [2022-10-17 10:35:00,766 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_dbg_buffer [2022-10-17 10:35:00,766 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:35:00,766 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:35:00,766 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_set_line_ctrl [2022-10-17 10:35:00,767 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_set_line_ctrl [2022-10-17 10:35:00,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:35:00,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-10-17 10:35:00,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-10-17 10:35:00,769 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-10-17 10:35:00,769 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-10-17 10:35:00,769 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-17 10:35:00,769 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-17 10:35:00,769 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freecs [2022-10-17 10:35:00,770 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freecs [2022-10-17 10:35:00,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:35:00,770 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_write_room [2022-10-17 10:35:00,770 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_write_room [2022-10-17 10:35:00,770 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_suspend [2022-10-17 10:35:00,770 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_suspend [2022-10-17 10:35:00,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-10-17 10:35:00,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-10-17 10:35:00,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:35:00,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:35:00,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2022-10-17 10:35:00,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2022-10-17 10:35:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-10-17 10:35:00,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-10-17 10:35:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_8 [2022-10-17 10:35:00,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_8 [2022-10-17 10:35:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:35:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-10-17 10:35:00,773 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-10-17 10:35:00,774 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-10-17 10:35:00,774 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-10-17 10:35:00,774 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freedriver [2022-10-17 10:35:00,774 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freedriver [2022-10-17 10:35:00,774 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_disconnect [2022-10-17 10:35:00,775 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_disconnect [2022-10-17 10:35:00,775 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_chars_in_buffer [2022-10-17 10:35:00,775 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_chars_in_buffer [2022-10-17 10:35:00,776 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-17 10:35:00,776 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-17 10:35:00,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:35:00,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:35:00,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_17 [2022-10-17 10:35:00,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_17 [2022-10-17 10:35:00,777 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_m10x_input [2022-10-17 10:35:00,778 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_m10x_input [2022-10-17 10:35:00,778 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-17 10:35:00,778 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-17 10:35:00,779 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-10-17 10:35:00,779 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-10-17 10:35:00,779 INFO L130 BoogieDeclarations]: Found specification of procedure set_value [2022-10-17 10:35:00,779 INFO L138 BoogieDeclarations]: Found implementation of procedure set_value [2022-10-17 10:35:00,779 INFO L130 BoogieDeclarations]: Found specification of procedure tiocm_to_gigaset [2022-10-17 10:35:00,779 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocm_to_gigaset [2022-10-17 10:35:00,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-10-17 10:35:00,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-10-17 10:35:00,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:35:00,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 10:35:00,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-17 10:35:00,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-17 10:35:00,781 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_init_bchannel [2022-10-17 10:35:00,781 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_init_bchannel [2022-10-17 10:35:00,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:35:00,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:35:00,783 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_read_int_callback [2022-10-17 10:35:00,785 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_read_int_callback [2022-10-17 10:35:00,786 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freecshw [2022-10-17 10:35:00,786 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freecshw [2022-10-17 10:35:01,440 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:35:01,446 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:35:01,768 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-17 10:35:02,321 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-10-17 10:35:04,147 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:35:04,162 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:35:04,162 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:35:04,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:35:04 BoogieIcfgContainer [2022-10-17 10:35:04,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:35:04,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:35:04,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:35:04,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:35:04,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:34:58" (1/3) ... [2022-10-17 10:35:04,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334a158f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:35:04, skipping insertion in model container [2022-10-17 10:35:04,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:00" (2/3) ... [2022-10-17 10:35:04,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334a158f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:35:04, skipping insertion in model container [2022-10-17 10:35:04,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:35:04" (3/3) ... [2022-10-17 10:35:04,177 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i [2022-10-17 10:35:04,200 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:35:04,200 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:35:04,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:35:04,301 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;@70356e66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:35:04,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:35:04,311 INFO L276 IsEmpty]: Start isEmpty. Operand has 739 states, 519 states have (on average 1.3737957610789981) internal successors, (713), 543 states have internal predecessors, (713), 167 states have call successors, (167), 53 states have call predecessors, (167), 51 states have return successors, (161), 156 states have call predecessors, (161), 161 states have call successors, (161) [2022-10-17 10:35:04,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-10-17 10:35:04,336 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:35:04,337 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:35:04,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:35:04,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:04,343 INFO L85 PathProgramCache]: Analyzing trace with hash 127184033, now seen corresponding path program 1 times [2022-10-17 10:35:04,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:04,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429327993] [2022-10-17 10:35:04,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:04,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:05,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:35:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:05,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:35:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:05,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:35:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:05,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-17 10:35:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:05,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-17 10:35:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:05,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-17 10:35:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-17 10:35:05,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:05,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429327993] [2022-10-17 10:35:05,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429327993] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:05,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:05,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:35:05,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680728068] [2022-10-17 10:35:05,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:05,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:35:05,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:05,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:35:05,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:35:05,158 INFO L87 Difference]: Start difference. First operand has 739 states, 519 states have (on average 1.3737957610789981) internal successors, (713), 543 states have internal predecessors, (713), 167 states have call successors, (167), 53 states have call predecessors, (167), 51 states have return successors, (161), 156 states have call predecessors, (161), 161 states have call successors, (161) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-17 10:35:08,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:35:08,329 INFO L93 Difference]: Finished difference Result 2258 states and 3253 transitions. [2022-10-17 10:35:08,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:35:08,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-10-17 10:35:08,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:35:08,363 INFO L225 Difference]: With dead ends: 2258 [2022-10-17 10:35:08,363 INFO L226 Difference]: Without dead ends: 1502 [2022-10-17 10:35:08,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:35:08,376 INFO L413 NwaCegarLoop]: 1065 mSDtfsCounter, 1423 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:35:08,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 1956 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-10-17 10:35:08,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2022-10-17 10:35:08,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1392. [2022-10-17 10:35:08,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 985 states have (on average 1.3563451776649746) internal successors, (1336), 1012 states have internal predecessors, (1336), 306 states have call successors, (306), 101 states have call predecessors, (306), 100 states have return successors, (301), 291 states have call predecessors, (301), 301 states have call successors, (301) [2022-10-17 10:35:08,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1943 transitions. [2022-10-17 10:35:08,602 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1943 transitions. Word has length 56 [2022-10-17 10:35:08,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:35:08,602 INFO L495 AbstractCegarLoop]: Abstraction has 1392 states and 1943 transitions. [2022-10-17 10:35:08,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-17 10:35:08,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1943 transitions. [2022-10-17 10:35:08,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-10-17 10:35:08,616 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:35:08,616 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:35:08,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:35:08,617 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:35:08,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:08,618 INFO L85 PathProgramCache]: Analyzing trace with hash 365368980, now seen corresponding path program 1 times [2022-10-17 10:35:08,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:08,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490839559] [2022-10-17 10:35:08,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:08,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:09,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:35:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:09,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:35:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:09,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:35:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:09,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-17 10:35:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:09,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-17 10:35:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:09,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:35:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:09,372 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-17 10:35:09,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:09,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490839559] [2022-10-17 10:35:09,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490839559] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:09,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:09,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:35:09,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088623631] [2022-10-17 10:35:09,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:09,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:35:09,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:09,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:35:09,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:35:09,376 INFO L87 Difference]: Start difference. First operand 1392 states and 1943 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-17 10:35:12,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:35:12,447 INFO L93 Difference]: Finished difference Result 4485 states and 6415 transitions. [2022-10-17 10:35:12,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:35:12,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 59 [2022-10-17 10:35:12,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:35:12,473 INFO L225 Difference]: With dead ends: 4485 [2022-10-17 10:35:12,473 INFO L226 Difference]: Without dead ends: 3108 [2022-10-17 10:35:12,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:35:12,481 INFO L413 NwaCegarLoop]: 1091 mSDtfsCounter, 2110 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1039 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2229 SdHoareTripleChecker+Valid, 2013 SdHoareTripleChecker+Invalid, 2072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1039 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:35:12,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2229 Valid, 2013 Invalid, 2072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1039 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-10-17 10:35:12,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2022-10-17 10:35:12,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2810. [2022-10-17 10:35:12,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2810 states, 1991 states have (on average 1.353088900050226) internal successors, (2694), 2041 states have internal predecessors, (2694), 608 states have call successors, (608), 201 states have call predecessors, (608), 210 states have return successors, (659), 593 states have call predecessors, (659), 603 states have call successors, (659) [2022-10-17 10:35:12,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2810 states to 2810 states and 3961 transitions. [2022-10-17 10:35:12,674 INFO L78 Accepts]: Start accepts. Automaton has 2810 states and 3961 transitions. Word has length 59 [2022-10-17 10:35:12,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:35:12,675 INFO L495 AbstractCegarLoop]: Abstraction has 2810 states and 3961 transitions. [2022-10-17 10:35:12,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-17 10:35:12,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2810 states and 3961 transitions. [2022-10-17 10:35:12,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-10-17 10:35:12,678 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:35:12,678 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:35:12,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:35:12,678 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:35:12,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:12,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1558877821, now seen corresponding path program 1 times [2022-10-17 10:35:12,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:12,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495300622] [2022-10-17 10:35:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:12,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:13,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:35:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:13,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:35:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:13,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:35:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:13,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-17 10:35:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:13,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-17 10:35:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:13,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:35:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-17 10:35:13,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:13,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495300622] [2022-10-17 10:35:13,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495300622] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:13,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:13,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:35:13,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557058802] [2022-10-17 10:35:13,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:13,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:35:13,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:13,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:35:13,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:35:13,176 INFO L87 Difference]: Start difference. First operand 2810 states and 3961 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-17 10:35:16,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:35:16,603 INFO L93 Difference]: Finished difference Result 8967 states and 12975 transitions. [2022-10-17 10:35:16,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:35:16,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 60 [2022-10-17 10:35:16,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:35:16,654 INFO L225 Difference]: With dead ends: 8967 [2022-10-17 10:35:16,654 INFO L226 Difference]: Without dead ends: 6172 [2022-10-17 10:35:16,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:35:16,675 INFO L413 NwaCegarLoop]: 1135 mSDtfsCounter, 1517 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:35:16,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1641 Valid, 2463 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-10-17 10:35:16,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6172 states. [2022-10-17 10:35:17,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6172 to 5639. [2022-10-17 10:35:17,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5639 states, 3996 states have (on average 1.3488488488488488) internal successors, (5390), 4092 states have internal predecessors, (5390), 1212 states have call successors, (1212), 401 states have call predecessors, (1212), 430 states have return successors, (1423), 1197 states have call predecessors, (1423), 1207 states have call successors, (1423) [2022-10-17 10:35:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5639 states to 5639 states and 8025 transitions. [2022-10-17 10:35:17,077 INFO L78 Accepts]: Start accepts. Automaton has 5639 states and 8025 transitions. Word has length 60 [2022-10-17 10:35:17,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:35:17,078 INFO L495 AbstractCegarLoop]: Abstraction has 5639 states and 8025 transitions. [2022-10-17 10:35:17,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-17 10:35:17,080 INFO L276 IsEmpty]: Start isEmpty. Operand 5639 states and 8025 transitions. [2022-10-17 10:35:17,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-10-17 10:35:17,083 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:35:17,083 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:35:17,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:35:17,086 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:35:17,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:17,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1080981641, now seen corresponding path program 1 times [2022-10-17 10:35:17,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:17,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305496615] [2022-10-17 10:35:17,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:17,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:17,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:35:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:17,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:35:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:17,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:35:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:17,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-17 10:35:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:17,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-17 10:35:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:17,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:35:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-17 10:35:17,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:17,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305496615] [2022-10-17 10:35:17,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305496615] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:17,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:17,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:35:17,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711421226] [2022-10-17 10:35:17,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:17,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:35:17,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:17,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:35:17,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:35:17,358 INFO L87 Difference]: Start difference. First operand 5639 states and 8025 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-17 10:35:20,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:35:20,741 INFO L93 Difference]: Finished difference Result 6170 states and 8864 transitions. [2022-10-17 10:35:20,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:35:20,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 61 [2022-10-17 10:35:20,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:35:20,790 INFO L225 Difference]: With dead ends: 6170 [2022-10-17 10:35:20,790 INFO L226 Difference]: Without dead ends: 6167 [2022-10-17 10:35:20,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:35:20,802 INFO L413 NwaCegarLoop]: 1126 mSDtfsCounter, 1517 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:35:20,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1644 Valid, 2440 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-10-17 10:35:20,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6167 states. [2022-10-17 10:35:21,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6167 to 5640. [2022-10-17 10:35:21,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5640 states, 3997 states have (on average 1.3487615711783838) internal successors, (5391), 4093 states have internal predecessors, (5391), 1212 states have call successors, (1212), 401 states have call predecessors, (1212), 430 states have return successors, (1423), 1197 states have call predecessors, (1423), 1207 states have call successors, (1423) [2022-10-17 10:35:21,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5640 states to 5640 states and 8026 transitions. [2022-10-17 10:35:21,203 INFO L78 Accepts]: Start accepts. Automaton has 5640 states and 8026 transitions. Word has length 61 [2022-10-17 10:35:21,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:35:21,205 INFO L495 AbstractCegarLoop]: Abstraction has 5640 states and 8026 transitions. [2022-10-17 10:35:21,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-17 10:35:21,206 INFO L276 IsEmpty]: Start isEmpty. Operand 5640 states and 8026 transitions. [2022-10-17 10:35:21,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-10-17 10:35:21,210 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:35:21,210 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:35:21,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:35:21,211 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:35:21,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:21,211 INFO L85 PathProgramCache]: Analyzing trace with hash 848902918, now seen corresponding path program 1 times [2022-10-17 10:35:21,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:21,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556945586] [2022-10-17 10:35:21,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:21,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:21,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:35:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:21,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:35:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:21,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:35:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:21,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-17 10:35:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:21,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-17 10:35:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:21,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:35:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:21,490 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-17 10:35:21,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:21,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556945586] [2022-10-17 10:35:21,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556945586] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:21,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:21,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:35:21,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721801218] [2022-10-17 10:35:21,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:21,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:35:21,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:21,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:35:21,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:35:21,495 INFO L87 Difference]: Start difference. First operand 5640 states and 8026 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-17 10:35:23,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:35:23,601 INFO L93 Difference]: Finished difference Result 6166 states and 8860 transitions. [2022-10-17 10:35:23,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:35:23,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2022-10-17 10:35:23,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:35:23,646 INFO L225 Difference]: With dead ends: 6166 [2022-10-17 10:35:23,646 INFO L226 Difference]: Without dead ends: 6163 [2022-10-17 10:35:23,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:35:23,651 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 1199 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:35:23,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 1651 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-10-17 10:35:23,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6163 states. [2022-10-17 10:35:23,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6163 to 5639. [2022-10-17 10:35:24,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5639 states, 3997 states have (on average 1.3485113835376532) internal successors, (5390), 4092 states have internal predecessors, (5390), 1211 states have call successors, (1211), 401 states have call predecessors, (1211), 430 states have return successors, (1423), 1197 states have call predecessors, (1423), 1207 states have call successors, (1423) [2022-10-17 10:35:24,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5639 states to 5639 states and 8024 transitions. [2022-10-17 10:35:24,042 INFO L78 Accepts]: Start accepts. Automaton has 5639 states and 8024 transitions. Word has length 62 [2022-10-17 10:35:24,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:35:24,043 INFO L495 AbstractCegarLoop]: Abstraction has 5639 states and 8024 transitions. [2022-10-17 10:35:24,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-17 10:35:24,048 INFO L276 IsEmpty]: Start isEmpty. Operand 5639 states and 8024 transitions. [2022-10-17 10:35:24,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-17 10:35:24,050 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:35:24,050 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:35:24,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:35:24,051 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:35:24,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:24,051 INFO L85 PathProgramCache]: Analyzing trace with hash 545786970, now seen corresponding path program 1 times [2022-10-17 10:35:24,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:24,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943639816] [2022-10-17 10:35:24,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:24,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:24,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:35:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:24,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:35:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:24,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:35:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:24,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-17 10:35:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:24,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-17 10:35:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:24,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:35:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:24,326 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-17 10:35:24,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:24,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943639816] [2022-10-17 10:35:24,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943639816] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:24,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:24,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:35:24,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663315769] [2022-10-17 10:35:24,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:24,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:35:24,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:24,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:35:24,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:35:24,329 INFO L87 Difference]: Start difference. First operand 5639 states and 8024 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-17 10:35:26,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:35:26,340 INFO L93 Difference]: Finished difference Result 6165 states and 8858 transitions. [2022-10-17 10:35:26,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:35:26,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 63 [2022-10-17 10:35:26,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:35:26,381 INFO L225 Difference]: With dead ends: 6165 [2022-10-17 10:35:26,381 INFO L226 Difference]: Without dead ends: 6143 [2022-10-17 10:35:26,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:35:26,386 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 1190 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:35:26,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 1659 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-17 10:35:26,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6143 states. [2022-10-17 10:35:26,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6143 to 5619. [2022-10-17 10:35:26,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5619 states, 3980 states have (on average 1.3484924623115577) internal successors, (5367), 4074 states have internal predecessors, (5367), 1209 states have call successors, (1209), 400 states have call predecessors, (1209), 429 states have return successors, (1422), 1196 states have call predecessors, (1422), 1206 states have call successors, (1422) [2022-10-17 10:35:26,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5619 states to 5619 states and 7998 transitions. [2022-10-17 10:35:26,868 INFO L78 Accepts]: Start accepts. Automaton has 5619 states and 7998 transitions. Word has length 63 [2022-10-17 10:35:26,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:35:26,869 INFO L495 AbstractCegarLoop]: Abstraction has 5619 states and 7998 transitions. [2022-10-17 10:35:26,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-17 10:35:26,870 INFO L276 IsEmpty]: Start isEmpty. Operand 5619 states and 7998 transitions. [2022-10-17 10:35:26,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-10-17 10:35:26,883 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:35:26,883 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:35:26,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:35:26,883 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:35:26,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:26,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1869934133, now seen corresponding path program 1 times [2022-10-17 10:35:26,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:26,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182713059] [2022-10-17 10:35:26,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:26,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms