./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--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5c13092b5fe0ffbf7fbf1fe31d493be6a68ca2455b811b10fd7983ff470e432f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:55:45,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:55:45,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:55:45,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:55:45,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:55:45,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:55:45,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:55:45,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:55:45,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:55:45,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:55:45,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:55:45,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:55:45,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:55:45,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:55:45,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:55:45,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:55:45,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:55:45,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:55:45,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:55:45,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:55:45,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:55:45,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:55:45,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:55:45,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:55:45,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:55:45,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:55:45,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:55:45,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:55:45,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:55:45,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:55:45,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:55:45,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:55:45,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:55:45,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:55:45,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:55:45,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:55:45,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:55:45,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:55:45,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:55:45,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:55:45,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:55:45,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:55:45,804 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:55:45,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:55:45,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:55:45,805 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:55:45,806 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:55:45,806 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:55:45,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:55:45,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:55:45,807 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:55:45,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:55:45,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:55:45,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:55:45,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:55:45,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:55:45,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:55:45,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:55:45,808 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:55:45,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:55:45,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:55:45,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:55:45,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:55:45,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:55:45,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:55:45,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:55:45,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:55:45,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:55:45,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:55:45,813 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:55:45,813 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:55:45,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:55:45,813 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_3a712651-5afc-4c53-a7c2-31516238bdbc/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c13092b5fe0ffbf7fbf1fe31d493be6a68ca2455b811b10fd7983ff470e432f [2022-11-16 11:55:46,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:55:46,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:55:46,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:55:46,109 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:55:46,110 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:55:46,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2022-11-16 11:55:46,182 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/bin/uautomizer-tPACEb0tL8/data/f39f67f30/36c7b369837b4cf5b29340b57219c170/FLAG0a7bb33a2 [2022-11-16 11:55:47,140 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:55:47,141 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2022-11-16 11:55:47,173 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/bin/uautomizer-tPACEb0tL8/data/f39f67f30/36c7b369837b4cf5b29340b57219c170/FLAG0a7bb33a2 [2022-11-16 11:55:47,623 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/bin/uautomizer-tPACEb0tL8/data/f39f67f30/36c7b369837b4cf5b29340b57219c170 [2022-11-16 11:55:47,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:55:47,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:55:47,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:55:47,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:55:47,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:55:47,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:55:47" (1/1) ... [2022-11-16 11:55:47,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eeb3396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:47, skipping insertion in model container [2022-11-16 11:55:47,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:55:47" (1/1) ... [2022-11-16 11:55:47,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:55:47,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:55:48,737 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i[108030,108043] [2022-11-16 11:55:49,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:55:49,518 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:55:49,651 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i[108030,108043] [2022-11-16 11:55:49,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:55:49,994 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:55:49,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:49 WrapperNode [2022-11-16 11:55:49,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:55:49,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:55:49,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:55:49,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:55:50,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:49" (1/1) ... [2022-11-16 11:55:50,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:49" (1/1) ... [2022-11-16 11:55:50,279 INFO L138 Inliner]: procedures = 178, calls = 1875, calls flagged for inlining = 81, calls inlined = 81, statements flattened = 3550 [2022-11-16 11:55:50,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:55:50,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:55:50,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:55:50,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:55:50,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:49" (1/1) ... [2022-11-16 11:55:50,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:49" (1/1) ... [2022-11-16 11:55:50,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:49" (1/1) ... [2022-11-16 11:55:50,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:49" (1/1) ... [2022-11-16 11:55:50,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:49" (1/1) ... [2022-11-16 11:55:50,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:49" (1/1) ... [2022-11-16 11:55:50,494 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:49" (1/1) ... [2022-11-16 11:55:50,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:49" (1/1) ... [2022-11-16 11:55:50,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:55:50,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:55:50,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:55:50,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:55:50,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:49" (1/1) ... [2022-11-16 11:55:50,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:55:50,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:55:50,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:55:50,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:55:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-16 11:55:50,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-16 11:55:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-16 11:55:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2022-11-16 11:55:50,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2022-11-16 11:55:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2022-11-16 11:55:50,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2022-11-16 11:55:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2022-11-16 11:55:50,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2022-11-16 11:55:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2022-11-16 11:55:50,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2022-11-16 11:55:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-16 11:55:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-16 11:55:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-11-16 11:55:50,694 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-11-16 11:55:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-16 11:55:50,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-16 11:55:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:55:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_20 [2022-11-16 11:55:50,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_20 [2022-11-16 11:55:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-16 11:55:50,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-16 11:55:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-16 11:55:50,699 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-16 11:55:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-16 11:55:50,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-16 11:55:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 11:55:50,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 11:55:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-16 11:55:50,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-16 11:55:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-16 11:55:50,700 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-16 11:55:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-16 11:55:50,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-16 11:55:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-16 11:55:50,701 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-16 11:55:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_resume [2022-11-16 11:55:50,701 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_resume [2022-11-16 11:55:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure kstrdup [2022-11-16 11:55:50,701 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrdup [2022-11-16 11:55:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2022-11-16 11:55:50,702 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2022-11-16 11:55:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_reset_resume [2022-11-16 11:55:50,702 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_reset_resume [2022-11-16 11:55:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:55:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-16 11:55:50,703 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-16 11:55:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-16 11:55:50,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-16 11:55:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-16 11:55:50,703 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-16 11:55:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-16 11:55:50,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-16 11:55:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 11:55:50,704 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 11:55:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 11:55:50,705 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 11:55:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:55:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-11-16 11:55:50,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-11-16 11:55:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_free_buffers [2022-11-16 11:55:50,708 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_free_buffers [2022-11-16 11:55:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_disconnect [2022-11-16 11:55:50,708 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_disconnect [2022-11-16 11:55:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_22 [2022-11-16 11:55:50,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_22 [2022-11-16 11:55:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:55:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-16 11:55:50,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-16 11:55:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:55:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:55:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-11-16 11:55:50,712 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-11-16 11:55:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2022-11-16 11:55:50,716 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2022-11-16 11:55:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-16 11:55:50,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-16 11:55:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-16 11:55:50,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-16 11:55:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:55:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-16 11:55:50,717 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-16 11:55:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_14 [2022-11-16 11:55:50,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_14 [2022-11-16 11:55:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_16 [2022-11-16 11:55:50,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_16 [2022-11-16 11:55:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2022-11-16 11:55:50,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2022-11-16 11:55:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_probe [2022-11-16 11:55:50,718 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_probe [2022-11-16 11:55:50,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:55:50,719 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2022-11-16 11:55:50,719 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2022-11-16 11:55:50,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 11:55:50,720 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2022-11-16 11:55:50,720 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2022-11-16 11:55:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_open [2022-11-16 11:55:50,721 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_open [2022-11-16 11:55:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_12 [2022-11-16 11:55:50,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_12 [2022-11-16 11:55:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-16 11:55:50,722 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-16 11:55:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-16 11:55:50,723 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-16 11:55:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-16 11:55:50,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-16 11:55:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_irq [2022-11-16 11:55:50,723 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_irq [2022-11-16 11:55:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-16 11:55:50,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-16 11:55:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_process_pkt [2022-11-16 11:55:50,724 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_process_pkt [2022-11-16 11:55:50,724 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-16 11:55:50,724 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-16 11:55:50,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2022-11-16 11:55:50,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2022-11-16 11:55:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-16 11:55:50,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-16 11:55:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:55:50,729 INFO L130 BoogieDeclarations]: Found specification of procedure nexio_read_data [2022-11-16 11:55:50,729 INFO L138 BoogieDeclarations]: Found implementation of procedure nexio_read_data [2022-11-16 11:55:50,729 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-16 11:55:50,729 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-16 11:55:50,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-16 11:55:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-16 11:55:50,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-16 11:55:50,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:55:50,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:55:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2022-11-16 11:55:50,738 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2022-11-16 11:55:50,738 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_process_multi [2022-11-16 11:55:50,738 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_process_multi [2022-11-16 11:55:51,431 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:55:51,434 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:55:51,735 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-16 11:55:54,966 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-11-16 11:55:56,333 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:55:56,346 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:55:56,346 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:55:56,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:55:56 BoogieIcfgContainer [2022-11-16 11:55:56,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:55:56,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:55:56,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:55:56,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:55:56,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:55:47" (1/3) ... [2022-11-16 11:55:56,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc6b055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:55:56, skipping insertion in model container [2022-11-16 11:55:56,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:49" (2/3) ... [2022-11-16 11:55:56,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc6b055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:55:56, skipping insertion in model container [2022-11-16 11:55:56,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:55:56" (3/3) ... [2022-11-16 11:55:56,361 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2022-11-16 11:55:56,381 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:55:56,382 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:55:56,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:55:56,503 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;@1f20b47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:55:56,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:55:56,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 959 states, 694 states have (on average 1.3544668587896254) internal successors, (940), 713 states have internal predecessors, (940), 207 states have call successors, (207), 58 states have call predecessors, (207), 56 states have return successors, (201), 199 states have call predecessors, (201), 201 states have call successors, (201) [2022-11-16 11:55:56,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 11:55:56,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:55:56,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:56,528 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:55:56,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:56,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1258424551, now seen corresponding path program 1 times [2022-11-16 11:55:56,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:56,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827593975] [2022-11-16 11:55:56,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:56,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:57,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:55:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:57,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:55:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:55:57,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:57,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827593975] [2022-11-16 11:55:57,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827593975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:57,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:57,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:55:57,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386076567] [2022-11-16 11:55:57,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:57,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:55:57,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:57,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:55:57,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:55:57,411 INFO L87 Difference]: Start difference. First operand has 959 states, 694 states have (on average 1.3544668587896254) internal successors, (940), 713 states have internal predecessors, (940), 207 states have call successors, (207), 58 states have call predecessors, (207), 56 states have return successors, (201), 199 states have call predecessors, (201), 201 states have call successors, (201) Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 11:56:10,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:10,117 INFO L93 Difference]: Finished difference Result 3538 states and 5260 transitions. [2022-11-16 11:56:10,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:56:10,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-11-16 11:56:10,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:10,181 INFO L225 Difference]: With dead ends: 3538 [2022-11-16 11:56:10,181 INFO L226 Difference]: Without dead ends: 2560 [2022-11-16 11:56:10,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:56:10,209 INFO L413 NwaCegarLoop]: 1357 mSDtfsCounter, 3172 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 1493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3355 SdHoareTripleChecker+Valid, 3508 SdHoareTripleChecker+Invalid, 3960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1493 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:10,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3355 Valid, 3508 Invalid, 3960 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1493 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2022-11-16 11:56:10,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2022-11-16 11:56:10,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1859. [2022-11-16 11:56:10,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1355 states have (on average 1.3439114391143911) internal successors, (1821), 1372 states have internal predecessors, (1821), 393 states have call successors, (393), 111 states have call predecessors, (393), 110 states have return successors, (387), 383 states have call predecessors, (387), 387 states have call successors, (387) [2022-11-16 11:56:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2601 transitions. [2022-11-16 11:56:10,504 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2601 transitions. Word has length 28 [2022-11-16 11:56:10,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:10,505 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 2601 transitions. [2022-11-16 11:56:10,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 11:56:10,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2601 transitions. [2022-11-16 11:56:10,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-16 11:56:10,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:10,517 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:56:10,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:56:10,517 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:10,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:10,518 INFO L85 PathProgramCache]: Analyzing trace with hash -640189051, now seen corresponding path program 1 times [2022-11-16 11:56:10,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:10,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247126215] [2022-11-16 11:56:10,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:10,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:10,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:56:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:10,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:56:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:10,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:56:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:56:10,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:10,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247126215] [2022-11-16 11:56:10,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247126215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:10,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:10,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:56:10,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284672611] [2022-11-16 11:56:10,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:10,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:56:10,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:10,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:56:10,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:56:10,944 INFO L87 Difference]: Start difference. First operand 1859 states and 2601 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:56:18,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:18,873 INFO L93 Difference]: Finished difference Result 2583 states and 3726 transitions. [2022-11-16 11:56:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:56:18,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-11-16 11:56:18,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:18,891 INFO L225 Difference]: With dead ends: 2583 [2022-11-16 11:56:18,891 INFO L226 Difference]: Without dead ends: 2570 [2022-11-16 11:56:18,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:56:18,895 INFO L413 NwaCegarLoop]: 1079 mSDtfsCounter, 2269 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2389 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:18,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2389 Valid, 2132 Invalid, 2163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-16 11:56:18,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2022-11-16 11:56:19,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 1859. [2022-11-16 11:56:19,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1355 states have (on average 1.3431734317343174) internal successors, (1820), 1372 states have internal predecessors, (1820), 393 states have call successors, (393), 111 states have call predecessors, (393), 110 states have return successors, (387), 383 states have call predecessors, (387), 387 states have call successors, (387) [2022-11-16 11:56:19,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2600 transitions. [2022-11-16 11:56:19,068 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2600 transitions. Word has length 38 [2022-11-16 11:56:19,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:19,069 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 2600 transitions. [2022-11-16 11:56:19,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:56:19,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2600 transitions. [2022-11-16 11:56:19,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-16 11:56:19,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:19,071 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:56:19,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:56:19,072 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:19,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:19,073 INFO L85 PathProgramCache]: Analyzing trace with hash -582930749, now seen corresponding path program 1 times [2022-11-16 11:56:19,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:19,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541507519] [2022-11-16 11:56:19,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:19,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:19,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:56:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:19,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:56:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:19,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:56:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:19,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:56:19,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:19,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541507519] [2022-11-16 11:56:19,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541507519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:19,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:19,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:56:19,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875459150] [2022-11-16 11:56:19,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:19,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:56:19,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:19,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:56:19,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:56:19,821 INFO L87 Difference]: Start difference. First operand 1859 states and 2600 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:56:31,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:31,594 INFO L93 Difference]: Finished difference Result 6942 states and 10382 transitions. [2022-11-16 11:56:31,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:56:31,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-11-16 11:56:31,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:31,632 INFO L225 Difference]: With dead ends: 6942 [2022-11-16 11:56:31,632 INFO L226 Difference]: Without dead ends: 5097 [2022-11-16 11:56:31,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:56:31,647 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 3337 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 2453 mSolverCounterSat, 1552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3501 SdHoareTripleChecker+Valid, 3397 SdHoareTripleChecker+Invalid, 4005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1552 IncrementalHoareTripleChecker+Valid, 2453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:31,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3501 Valid, 3397 Invalid, 4005 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1552 Valid, 2453 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-11-16 11:56:31,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2022-11-16 11:56:31,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 4246. [2022-11-16 11:56:31,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4246 states, 3099 states have (on average 1.3275250080671184) internal successors, (4114), 3132 states have internal predecessors, (4114), 851 states have call successors, (851), 220 states have call predecessors, (851), 295 states have return successors, (1211), 909 states have call predecessors, (1211), 845 states have call successors, (1211) [2022-11-16 11:56:31,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4246 states to 4246 states and 6176 transitions. [2022-11-16 11:56:32,000 INFO L78 Accepts]: Start accepts. Automaton has 4246 states and 6176 transitions. Word has length 38 [2022-11-16 11:56:32,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:32,003 INFO L495 AbstractCegarLoop]: Abstraction has 4246 states and 6176 transitions. [2022-11-16 11:56:32,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:56:32,003 INFO L276 IsEmpty]: Start isEmpty. Operand 4246 states and 6176 transitions. [2022-11-16 11:56:32,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-16 11:56:32,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:32,007 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:56:32,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:56:32,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:32,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:32,009 INFO L85 PathProgramCache]: Analyzing trace with hash -891481876, now seen corresponding path program 1 times [2022-11-16 11:56:32,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:32,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602852708] [2022-11-16 11:56:32,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:32,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:32,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:56:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:32,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:56:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:32,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:56:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:56:32,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:32,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602852708] [2022-11-16 11:56:32,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602852708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:32,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:32,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:56:32,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55874267] [2022-11-16 11:56:32,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:32,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:56:32,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:32,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:56:32,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:56:32,586 INFO L87 Difference]: Start difference. First operand 4246 states and 6176 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:56:35,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:56:41,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:41,381 INFO L93 Difference]: Finished difference Result 5088 states and 7606 transitions. [2022-11-16 11:56:41,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:56:41,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-11-16 11:56:41,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:41,412 INFO L225 Difference]: With dead ends: 5088 [2022-11-16 11:56:41,412 INFO L226 Difference]: Without dead ends: 5085 [2022-11-16 11:56:41,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:56:41,416 INFO L413 NwaCegarLoop]: 1043 mSDtfsCounter, 2265 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 925 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2389 SdHoareTripleChecker+Valid, 2041 SdHoareTripleChecker+Invalid, 2151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 925 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:41,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2389 Valid, 2041 Invalid, 2151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [925 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-16 11:56:41,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5085 states. [2022-11-16 11:56:41,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5085 to 4245. [2022-11-16 11:56:41,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4245 states, 3099 states have (on average 1.3272023233301065) internal successors, (4113), 3131 states have internal predecessors, (4113), 850 states have call successors, (850), 220 states have call predecessors, (850), 295 states have return successors, (1211), 909 states have call predecessors, (1211), 845 states have call successors, (1211) [2022-11-16 11:56:41,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4245 states to 4245 states and 6174 transitions. [2022-11-16 11:56:41,740 INFO L78 Accepts]: Start accepts. Automaton has 4245 states and 6174 transitions. Word has length 39 [2022-11-16 11:56:41,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:41,742 INFO L495 AbstractCegarLoop]: Abstraction has 4245 states and 6174 transitions. [2022-11-16 11:56:41,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:56:41,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4245 states and 6174 transitions. [2022-11-16 11:56:41,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-16 11:56:41,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:41,746 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:56:41,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:56:41,746 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:41,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:41,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1866627354, now seen corresponding path program 1 times [2022-11-16 11:56:41,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:41,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204381603] [2022-11-16 11:56:41,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:41,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:42,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:56:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:42,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:56:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:42,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:56:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:56:42,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:42,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204381603] [2022-11-16 11:56:42,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204381603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:42,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:42,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:56:42,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388512965] [2022-11-16 11:56:42,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:42,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:56:42,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:42,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:56:42,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:56:42,063 INFO L87 Difference]: Start difference. First operand 4245 states and 6174 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:56:49,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:49,829 INFO L93 Difference]: Finished difference Result 5087 states and 7604 transitions. [2022-11-16 11:56:49,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:56:49,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-16 11:56:49,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:49,859 INFO L225 Difference]: With dead ends: 5087 [2022-11-16 11:56:49,859 INFO L226 Difference]: Without dead ends: 5084 [2022-11-16 11:56:49,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:56:49,863 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 2277 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 945 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2405 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 945 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:49,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2405 Valid, 2000 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [945 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-16 11:56:49,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2022-11-16 11:56:50,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 4244. [2022-11-16 11:56:50,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4244 states, 3099 states have (on average 1.3268796385930945) internal successors, (4112), 3130 states have internal predecessors, (4112), 849 states have call successors, (849), 220 states have call predecessors, (849), 295 states have return successors, (1211), 909 states have call predecessors, (1211), 845 states have call successors, (1211) [2022-11-16 11:56:50,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4244 states to 4244 states and 6172 transitions. [2022-11-16 11:56:50,290 INFO L78 Accepts]: Start accepts. Automaton has 4244 states and 6172 transitions. Word has length 40 [2022-11-16 11:56:50,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:50,291 INFO L495 AbstractCegarLoop]: Abstraction has 4244 states and 6172 transitions. [2022-11-16 11:56:50,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:56:50,293 INFO L276 IsEmpty]: Start isEmpty. Operand 4244 states and 6172 transitions. [2022-11-16 11:56:50,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-16 11:56:50,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:50,295 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:56:50,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:56:50,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:50,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:50,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2031361233, now seen corresponding path program 1 times [2022-11-16 11:56:50,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:50,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846191870] [2022-11-16 11:56:50,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:50,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:50,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:56:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:50,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:56:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:50,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:56:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:56:50,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:50,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846191870] [2022-11-16 11:56:50,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846191870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:50,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:50,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:56:50,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615377340] [2022-11-16 11:56:50,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:50,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:56:50,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:50,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:56:50,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:56:50,587 INFO L87 Difference]: Start difference. First operand 4244 states and 6172 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:56:53,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:57:02,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:02,337 INFO L93 Difference]: Finished difference Result 14347 states and 22002 transitions. [2022-11-16 11:57:02,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:57:02,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-11-16 11:57:02,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:02,403 INFO L225 Difference]: With dead ends: 14347 [2022-11-16 11:57:02,403 INFO L226 Difference]: Without dead ends: 10117 [2022-11-16 11:57:02,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:57:02,431 INFO L413 NwaCegarLoop]: 1283 mSDtfsCounter, 3223 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 1513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3386 SdHoareTripleChecker+Valid, 3463 SdHoareTripleChecker+Invalid, 3867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1513 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:02,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3386 Valid, 3463 Invalid, 3867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1513 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2022-11-16 11:57:02,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10117 states. [2022-11-16 11:57:03,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10117 to 8695. [2022-11-16 11:57:03,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8695 states, 6351 states have (on average 1.3267202015430641) internal successors, (8426), 6411 states have internal predecessors, (8426), 1726 states have call successors, (1726), 435 states have call predecessors, (1726), 617 states have return successors, (2913), 1880 states have call predecessors, (2913), 1719 states have call successors, (2913) [2022-11-16 11:57:03,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8695 states to 8695 states and 13065 transitions. [2022-11-16 11:57:03,330 INFO L78 Accepts]: Start accepts. Automaton has 8695 states and 13065 transitions. Word has length 41 [2022-11-16 11:57:03,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:03,332 INFO L495 AbstractCegarLoop]: Abstraction has 8695 states and 13065 transitions. [2022-11-16 11:57:03,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:57:03,332 INFO L276 IsEmpty]: Start isEmpty. Operand 8695 states and 13065 transitions. [2022-11-16 11:57:03,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 11:57:03,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:03,335 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:57:03,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:57:03,335 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:57:03,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:03,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1451827977, now seen corresponding path program 1 times [2022-11-16 11:57:03,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:03,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277312636] [2022-11-16 11:57:03,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:03,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:03,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:57:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:03,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:57:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:03,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:57:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:57:03,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:03,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277312636] [2022-11-16 11:57:03,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277312636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:03,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:03,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:57:03,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528632631] [2022-11-16 11:57:03,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:03,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:57:03,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:03,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:57:03,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:57:03,614 INFO L87 Difference]: Start difference. First operand 8695 states and 13065 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:57:11,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:11,188 INFO L93 Difference]: Finished difference Result 10085 states and 15449 transitions. [2022-11-16 11:57:11,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:11,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-16 11:57:11,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:11,295 INFO L225 Difference]: With dead ends: 10085 [2022-11-16 11:57:11,295 INFO L226 Difference]: Without dead ends: 10073 [2022-11-16 11:57:11,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:57:11,302 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 2269 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 939 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2396 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:11,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2396 Valid, 2007 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [939 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-16 11:57:11,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10073 states. [2022-11-16 11:57:12,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10073 to 8685. [2022-11-16 11:57:12,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8685 states, 6342 states have (on average 1.326553137811416) internal successors, (8413), 6401 states have internal predecessors, (8413), 1725 states have call successors, (1725), 435 states have call predecessors, (1725), 617 states have return successors, (2913), 1880 states have call predecessors, (2913), 1719 states have call successors, (2913) [2022-11-16 11:57:12,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8685 states to 8685 states and 13051 transitions. [2022-11-16 11:57:12,115 INFO L78 Accepts]: Start accepts. Automaton has 8685 states and 13051 transitions. Word has length 42 [2022-11-16 11:57:12,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:12,116 INFO L495 AbstractCegarLoop]: Abstraction has 8685 states and 13051 transitions. [2022-11-16 11:57:12,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:57:12,116 INFO L276 IsEmpty]: Start isEmpty. Operand 8685 states and 13051 transitions. [2022-11-16 11:57:12,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 11:57:12,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:12,122 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:57:12,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:57:12,122 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:57:12,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:12,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1412893261, now seen corresponding path program 1 times [2022-11-16 11:57:12,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:12,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320144752] [2022-11-16 11:57:12,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:12,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:12,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:57:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:12,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:57:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:12,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:57:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:12,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:57:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:12,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:57:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:57:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:12,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:57:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:12,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:57:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:12,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:57:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:57:12,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:12,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320144752] [2022-11-16 11:57:12,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320144752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:12,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:12,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:57:12,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775959515] [2022-11-16 11:57:12,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:12,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:57:12,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:12,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:57:12,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:57:12,417 INFO L87 Difference]: Start difference. First operand 8685 states and 13051 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 11:57:14,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:57:23,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:23,658 INFO L93 Difference]: Finished difference Result 21495 states and 33464 transitions. [2022-11-16 11:57:23,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:57:23,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 88 [2022-11-16 11:57:23,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:23,729 INFO L225 Difference]: With dead ends: 21495 [2022-11-16 11:57:23,729 INFO L226 Difference]: Without dead ends: 12824 [2022-11-16 11:57:23,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:57:23,768 INFO L413 NwaCegarLoop]: 1099 mSDtfsCounter, 2822 mSDsluCounter, 2811 mSDsCounter, 0 mSdLazyCounter, 2616 mSolverCounterSat, 1750 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2944 SdHoareTripleChecker+Valid, 3910 SdHoareTripleChecker+Invalid, 4366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1750 IncrementalHoareTripleChecker+Valid, 2616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:23,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2944 Valid, 3910 Invalid, 4366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1750 Valid, 2616 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-11-16 11:57:23,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12824 states. [2022-11-16 11:57:24,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12824 to 10623. [2022-11-16 11:57:24,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10623 states, 7740 states have (on average 1.312015503875969) internal successors, (10155), 7793 states have internal predecessors, (10155), 2063 states have call successors, (2063), 437 states have call predecessors, (2063), 819 states have return successors, (4329), 2428 states have call predecessors, (4329), 2057 states have call successors, (4329) [2022-11-16 11:57:24,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10623 states to 10623 states and 16547 transitions. [2022-11-16 11:57:24,739 INFO L78 Accepts]: Start accepts. Automaton has 10623 states and 16547 transitions. Word has length 88 [2022-11-16 11:57:24,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:24,740 INFO L495 AbstractCegarLoop]: Abstraction has 10623 states and 16547 transitions. [2022-11-16 11:57:24,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 11:57:24,740 INFO L276 IsEmpty]: Start isEmpty. Operand 10623 states and 16547 transitions. [2022-11-16 11:57:24,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-16 11:57:24,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:24,747 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:57:24,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:57:24,748 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:57:24,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:24,748 INFO L85 PathProgramCache]: Analyzing trace with hash -2054478901, now seen corresponding path program 1 times [2022-11-16 11:57:24,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:24,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459796141] [2022-11-16 11:57:24,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:24,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:25,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:57:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:25,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:57:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:25,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:57:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:25,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:57:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:25,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:57:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:25,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 11:57:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:25,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:57:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:25,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:57:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:25,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:57:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:25,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:57:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:25,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:57:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:25,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-16 11:57:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:25,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:57:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:57:25,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:25,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459796141] [2022-11-16 11:57:25,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459796141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:25,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:25,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:57:25,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339581381] [2022-11-16 11:57:25,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:25,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:57:25,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:25,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:57:25,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:57:25,318 INFO L87 Difference]: Start difference. First operand 10623 states and 16547 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 11:57:29,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:57:31,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:57:53,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:53,446 INFO L93 Difference]: Finished difference Result 37584 states and 59561 transitions. [2022-11-16 11:57:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 11:57:53,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 127 [2022-11-16 11:57:53,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:53,586 INFO L225 Difference]: With dead ends: 37584 [2022-11-16 11:57:53,586 INFO L226 Difference]: Without dead ends: 26983 [2022-11-16 11:57:53,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:57:53,640 INFO L413 NwaCegarLoop]: 1866 mSDtfsCounter, 4292 mSDsluCounter, 5030 mSDsCounter, 0 mSdLazyCounter, 5526 mSolverCounterSat, 3069 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4501 SdHoareTripleChecker+Valid, 6896 SdHoareTripleChecker+Invalid, 8595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3069 IncrementalHoareTripleChecker+Valid, 5526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:53,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4501 Valid, 6896 Invalid, 8595 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3069 Valid, 5526 Invalid, 0 Unknown, 0 Unchecked, 24.9s Time] [2022-11-16 11:57:53,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26983 states. [2022-11-16 11:57:55,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26983 to 20953. [2022-11-16 11:57:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20953 states, 15244 states have (on average 1.3083180267646286) internal successors, (19944), 15355 states have internal predecessors, (19944), 4061 states have call successors, (4061), 865 states have call predecessors, (4061), 1647 states have return successors, (8447), 4804 states have call predecessors, (8447), 4055 states have call successors, (8447) [2022-11-16 11:57:56,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20953 states to 20953 states and 32452 transitions. [2022-11-16 11:57:56,126 INFO L78 Accepts]: Start accepts. Automaton has 20953 states and 32452 transitions. Word has length 127 [2022-11-16 11:57:56,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:56,126 INFO L495 AbstractCegarLoop]: Abstraction has 20953 states and 32452 transitions. [2022-11-16 11:57:56,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 11:57:56,127 INFO L276 IsEmpty]: Start isEmpty. Operand 20953 states and 32452 transitions. [2022-11-16 11:57:56,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-16 11:57:56,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:56,135 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-16 11:57:56,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:57:56,135 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:57:56,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:56,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1840011741, now seen corresponding path program 1 times [2022-11-16 11:57:56,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:56,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2621827] [2022-11-16 11:57:56,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:56,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:57:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:57:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:57:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:57:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:57:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:57:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 11:57:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-16 11:57:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-16 11:57:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 11:57:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:57:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:57:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:57:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-16 11:57:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:57:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:57:56,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:56,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2621827] [2022-11-16 11:57:56,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2621827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:56,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:56,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:57:56,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737658371] [2022-11-16 11:57:56,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:56,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:57:56,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:56,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:57:56,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:57:56,864 INFO L87 Difference]: Start difference. First operand 20953 states and 32452 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 11:58:18,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:58:21,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:58:52,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:58:52,470 INFO L93 Difference]: Finished difference Result 83602 states and 146848 transitions. [2022-11-16 11:58:52,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 11:58:52,471 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2022-11-16 11:58:52,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:58:53,161 INFO L225 Difference]: With dead ends: 83602 [2022-11-16 11:58:53,161 INFO L226 Difference]: Without dead ends: 62671 [2022-11-16 11:58:53,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=443, Invalid=1537, Unknown=0, NotChecked=0, Total=1980 [2022-11-16 11:58:53,293 INFO L413 NwaCegarLoop]: 2134 mSDtfsCounter, 7077 mSDsluCounter, 11858 mSDsCounter, 0 mSdLazyCounter, 15916 mSolverCounterSat, 6495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7282 SdHoareTripleChecker+Valid, 13992 SdHoareTripleChecker+Invalid, 22411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 6495 IncrementalHoareTripleChecker+Valid, 15916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:58:53,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7282 Valid, 13992 Invalid, 22411 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [6495 Valid, 15916 Invalid, 0 Unknown, 0 Unchecked, 46.6s Time] [2022-11-16 11:58:53,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62671 states. [2022-11-16 11:58:58,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62671 to 22901. [2022-11-16 11:58:58,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22901 states, 16556 states have (on average 1.3049045663203673) internal successors, (21604), 16607 states have internal predecessors, (21604), 4601 states have call successors, (4601), 865 states have call predecessors, (4601), 1743 states have return successors, (9767), 5508 states have call predecessors, (9767), 4595 states have call successors, (9767) [2022-11-16 11:58:58,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22901 states to 22901 states and 35972 transitions. [2022-11-16 11:58:58,343 INFO L78 Accepts]: Start accepts. Automaton has 22901 states and 35972 transitions. Word has length 139 [2022-11-16 11:58:58,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:58:58,343 INFO L495 AbstractCegarLoop]: Abstraction has 22901 states and 35972 transitions. [2022-11-16 11:58:58,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 11:58:58,344 INFO L276 IsEmpty]: Start isEmpty. Operand 22901 states and 35972 transitions. [2022-11-16 11:58:58,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-16 11:58:58,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:58:58,352 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-16 11:58:58,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:58:58,352 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:58:58,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:58,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1643428035, now seen corresponding path program 1 times [2022-11-16 11:58:58,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:58,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700932861] [2022-11-16 11:58:58,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:58,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:58,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:58:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:58,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:58:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:58,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:58:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:58,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:58:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:58,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:58:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:58,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:58:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:58,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:58:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:58,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:58:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:59,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 11:58:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:59,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-16 11:58:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:59,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:58:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:59,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:58:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:59,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:58:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 11:58:59,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:59,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700932861] [2022-11-16 11:58:59,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700932861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:59,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:59,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:58:59,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287061710] [2022-11-16 11:58:59,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:59,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:58:59,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:59,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:58:59,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:58:59,058 INFO L87 Difference]: Start difference. First operand 22901 states and 35972 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-16 11:59:26,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:59:26,789 INFO L93 Difference]: Finished difference Result 72489 states and 117805 transitions. [2022-11-16 11:59:26,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 11:59:26,791 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 137 [2022-11-16 11:59:26,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:59:27,291 INFO L225 Difference]: With dead ends: 72489 [2022-11-16 11:59:27,292 INFO L226 Difference]: Without dead ends: 49610 [2022-11-16 11:59:27,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:59:27,389 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 4402 mSDsluCounter, 4043 mSDsCounter, 0 mSdLazyCounter, 4636 mSolverCounterSat, 3022 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4612 SdHoareTripleChecker+Valid, 5939 SdHoareTripleChecker+Invalid, 7658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3022 IncrementalHoareTripleChecker+Valid, 4636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:59:27,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4612 Valid, 5939 Invalid, 7658 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3022 Valid, 4636 Invalid, 0 Unknown, 0 Unchecked, 20.7s Time] [2022-11-16 11:59:27,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49610 states. [2022-11-16 11:59:32,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49610 to 34149. [2022-11-16 11:59:32,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34149 states, 24676 states have (on average 1.3042227265359054) internal successors, (32183), 24751 states have internal predecessors, (32183), 6865 states have call successors, (6865), 1293 states have call predecessors, (6865), 2607 states have return successors, (14493), 8224 states have call predecessors, (14493), 6859 states have call successors, (14493) [2022-11-16 11:59:33,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34149 states to 34149 states and 53541 transitions. [2022-11-16 11:59:33,048 INFO L78 Accepts]: Start accepts. Automaton has 34149 states and 53541 transitions. Word has length 137 [2022-11-16 11:59:33,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:59:33,049 INFO L495 AbstractCegarLoop]: Abstraction has 34149 states and 53541 transitions. [2022-11-16 11:59:33,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-16 11:59:33,049 INFO L276 IsEmpty]: Start isEmpty. Operand 34149 states and 53541 transitions. [2022-11-16 11:59:33,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-16 11:59:33,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:59:33,062 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-16 11:59:33,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:59:33,062 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:59:33,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:33,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1802220006, now seen corresponding path program 1 times [2022-11-16 11:59:33,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:33,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458070522] [2022-11-16 11:59:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:33,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:33,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:59:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:33,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:59:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:33,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:59:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:33,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:59:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:33,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:59:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:33,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:59:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:33,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:59:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:33,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-16 11:59:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:33,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:59:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:33,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-16 11:59:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:33,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 11:59:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:33,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-16 11:59:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:33,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:59:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:33,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 11:59:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:33,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:59:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:33,809 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:59:33,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:33,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458070522] [2022-11-16 11:59:33,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458070522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:33,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:33,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:59:33,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764234974] [2022-11-16 11:59:33,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:33,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:59:33,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:33,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:59:33,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:59:33,812 INFO L87 Difference]: Start difference. First operand 34149 states and 53541 transitions. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 12:00:28,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:00:28,549 INFO L93 Difference]: Finished difference Result 117552 states and 205704 transitions. [2022-11-16 12:00:28,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 12:00:28,550 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 143 [2022-11-16 12:00:28,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:00:29,399 INFO L225 Difference]: With dead ends: 117552 [2022-11-16 12:00:29,400 INFO L226 Difference]: Without dead ends: 83425 [2022-11-16 12:00:29,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=443, Invalid=1537, Unknown=0, NotChecked=0, Total=1980 [2022-11-16 12:00:29,544 INFO L413 NwaCegarLoop]: 2076 mSDtfsCounter, 8496 mSDsluCounter, 10305 mSDsCounter, 0 mSdLazyCounter, 13688 mSolverCounterSat, 8506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8704 SdHoareTripleChecker+Valid, 12381 SdHoareTripleChecker+Invalid, 22194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 8506 IncrementalHoareTripleChecker+Valid, 13688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:00:29,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8704 Valid, 12381 Invalid, 22194 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [8506 Valid, 13688 Invalid, 0 Unknown, 0 Unchecked, 40.0s Time] [2022-11-16 12:00:29,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83425 states. [2022-11-16 12:00:35,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83425 to 34149. [2022-11-16 12:00:35,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34149 states, 24676 states have (on average 1.3042227265359054) internal successors, (32183), 24751 states have internal predecessors, (32183), 6865 states have call successors, (6865), 1293 states have call predecessors, (6865), 2607 states have return successors, (14493), 8224 states have call predecessors, (14493), 6859 states have call successors, (14493) [2022-11-16 12:00:35,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34149 states to 34149 states and 53541 transitions. [2022-11-16 12:00:35,697 INFO L78 Accepts]: Start accepts. Automaton has 34149 states and 53541 transitions. Word has length 143 [2022-11-16 12:00:35,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:00:35,698 INFO L495 AbstractCegarLoop]: Abstraction has 34149 states and 53541 transitions. [2022-11-16 12:00:35,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 12:00:35,699 INFO L276 IsEmpty]: Start isEmpty. Operand 34149 states and 53541 transitions. [2022-11-16 12:00:35,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-16 12:00:35,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:00:35,706 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:35,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:00:35,706 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:00:35,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:35,706 INFO L85 PathProgramCache]: Analyzing trace with hash 639887037, now seen corresponding path program 1 times [2022-11-16 12:00:35,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:35,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22690476] [2022-11-16 12:00:35,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:35,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:00:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:00:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:00:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:00:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:00:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:00:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 12:00:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:00:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:00:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:00:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:00:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:00:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-16 12:00:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 12:00:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:00:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:00:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 12:00:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 12:00:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:00:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-16 12:00:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,561 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 12:00:36,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:36,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22690476] [2022-11-16 12:00:36,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22690476] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:00:36,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550462379] [2022-11-16 12:00:36,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:36,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:36,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:36,568 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:36,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a712651-5afc-4c53-a7c2-31516238bdbc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:00:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:37,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 3528 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:00:37,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 12:00:37,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:00:37,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550462379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:37,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:00:37,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-16 12:00:37,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855363972] [2022-11-16 12:00:37,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:37,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:00:37,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:37,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:00:37,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:00:37,854 INFO L87 Difference]: Start difference. First operand 34149 states and 53541 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18)