./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 cb4cf2f7b619bb65636b8158cc0f6ae5cf90699f1f1c19bf802021a20c422d2c --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:45:13,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:45:13,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:45:13,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:45:13,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:45:13,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:45:13,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:45:13,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:45:13,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:45:13,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:45:13,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:45:13,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:45:13,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:45:13,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:45:13,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:45:13,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:45:13,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:45:13,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:45:13,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:45:13,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:45:13,942 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:45:13,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:45:13,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:45:13,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:45:13,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:45:13,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:45:13,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:45:13,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:45:13,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:45:13,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:45:13,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:45:13,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:45:13,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:45:13,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:45:13,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:45:13,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:45:13,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:45:13,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:45:13,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:45:13,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:45:13,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:45:13,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:45:13,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:45:13,993 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:45:13,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:45:13,993 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:45:13,994 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:45:13,994 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:45:13,994 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:45:13,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:45:13,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:45:13,995 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:45:13,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:45:13,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:45:13,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:45:13,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:45:13,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:45:13,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:45:13,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:45:13,997 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:45:13,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:45:13,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:45:13,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:45:13,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:45:13,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:45:13,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:45:13,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:45:13,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:45:13,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:45:13,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:45:13,999 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:45:13,999 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:45:13,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:45:14,000 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb4cf2f7b619bb65636b8158cc0f6ae5cf90699f1f1c19bf802021a20c422d2c [2022-07-22 23:45:14,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:45:14,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:45:14,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:45:14,205 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:45:14,206 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:45:14,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2022-07-22 23:45:14,260 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cb72fe7c/532846eaf2e34d3aaf8b5442dd8be36c/FLAGb2e06047f [2022-07-22 23:45:14,890 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:45:14,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2022-07-22 23:45:14,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cb72fe7c/532846eaf2e34d3aaf8b5442dd8be36c/FLAGb2e06047f [2022-07-22 23:45:15,108 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cb72fe7c/532846eaf2e34d3aaf8b5442dd8be36c [2022-07-22 23:45:15,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:45:15,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:45:15,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:45:15,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:45:15,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:45:15,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:45:15" (1/1) ... [2022-07-22 23:45:15,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57c98d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:15, skipping insertion in model container [2022-07-22 23:45:15,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:45:15" (1/1) ... [2022-07-22 23:45:15,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:45:15,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:45:15,719 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i[153287,153300] [2022-07-22 23:45:15,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:45:15,843 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:45:15,996 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i[153287,153300] [2022-07-22 23:45:16,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:45:16,089 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:45:16,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:16 WrapperNode [2022-07-22 23:45:16,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:45:16,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:45:16,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:45:16,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:45:16,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:16" (1/1) ... [2022-07-22 23:45:16,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:16" (1/1) ... [2022-07-22 23:45:16,179 INFO L137 Inliner]: procedures = 82, calls = 140, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 461 [2022-07-22 23:45:16,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:45:16,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:45:16,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:45:16,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:45:16,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:16" (1/1) ... [2022-07-22 23:45:16,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:16" (1/1) ... [2022-07-22 23:45:16,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:16" (1/1) ... [2022-07-22 23:45:16,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:16" (1/1) ... [2022-07-22 23:45:16,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:16" (1/1) ... [2022-07-22 23:45:16,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:16" (1/1) ... [2022-07-22 23:45:16,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:16" (1/1) ... [2022-07-22 23:45:16,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:45:16,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:45:16,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:45:16,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:45:16,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:16" (1/1) ... [2022-07-22 23:45:16,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:45:16,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:45:16,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 23:45:16,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 23:45:16,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:45:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-22 23:45:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:45:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:45:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-22 23:45:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-22 23:45:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-22 23:45:16,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-22 23:45:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:45:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:45:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-22 23:45:16,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-22 23:45:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-22 23:45:16,367 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-22 23:45:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:45:16,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:45:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:45:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:45:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-22 23:45:16,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-22 23:45:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:45:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:45:16,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:45:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-22 23:45:16,369 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-22 23:45:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 23:45:16,370 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 23:45:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:45:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:45:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2022-07-22 23:45:16,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2022-07-22 23:45:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-22 23:45:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-22 23:45:16,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-22 23:45:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:45:16,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:45:16,706 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:45:16,708 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:45:16,800 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-22 23:45:17,188 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:45:17,202 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:45:17,203 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-22 23:45:17,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:45:17 BoogieIcfgContainer [2022-07-22 23:45:17,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:45:17,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:45:17,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:45:17,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:45:17,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:45:15" (1/3) ... [2022-07-22 23:45:17,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c3af1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:45:17, skipping insertion in model container [2022-07-22 23:45:17,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:16" (2/3) ... [2022-07-22 23:45:17,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c3af1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:45:17, skipping insertion in model container [2022-07-22 23:45:17,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:45:17" (3/3) ... [2022-07-22 23:45:17,215 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2022-07-22 23:45:17,227 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:45:17,228 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:45:17,284 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:45:17,295 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@126fdb0c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@189f7691 [2022-07-22 23:45:17,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:45:17,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 131 states have (on average 1.4198473282442747) internal successors, (186), 136 states have internal predecessors, (186), 22 states have call successors, (22), 10 states have call predecessors, (22), 9 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-22 23:45:17,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-22 23:45:17,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:17,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:45:17,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:17,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:17,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1048731652, now seen corresponding path program 1 times [2022-07-22 23:45:17,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:17,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350485019] [2022-07-22 23:45:17,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:17,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:17,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:45:17,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:17,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350485019] [2022-07-22 23:45:17,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350485019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:17,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:17,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:45:17,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493380568] [2022-07-22 23:45:17,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:17,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:45:17,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:17,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:45:17,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:45:17,705 INFO L87 Difference]: Start difference. First operand has 164 states, 131 states have (on average 1.4198473282442747) internal successors, (186), 136 states have internal predecessors, (186), 22 states have call successors, (22), 10 states have call predecessors, (22), 9 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:45:18,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:18,135 INFO L93 Difference]: Finished difference Result 500 states and 731 transitions. [2022-07-22 23:45:18,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:45:18,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-07-22 23:45:18,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:18,157 INFO L225 Difference]: With dead ends: 500 [2022-07-22 23:45:18,157 INFO L226 Difference]: Without dead ends: 327 [2022-07-22 23:45:18,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:45:18,171 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 275 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:18,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 496 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 23:45:18,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-07-22 23:45:18,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 279. [2022-07-22 23:45:18,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 228 states have (on average 1.3421052631578947) internal successors, (306), 228 states have internal predecessors, (306), 34 states have call successors, (34), 17 states have call predecessors, (34), 16 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-22 23:45:18,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 373 transitions. [2022-07-22 23:45:18,235 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 373 transitions. Word has length 25 [2022-07-22 23:45:18,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:18,236 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 373 transitions. [2022-07-22 23:45:18,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:45:18,236 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 373 transitions. [2022-07-22 23:45:18,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-22 23:45:18,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:18,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:45:18,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:45:18,239 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:18,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:18,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1324273599, now seen corresponding path program 1 times [2022-07-22 23:45:18,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:18,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960660558] [2022-07-22 23:45:18,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:18,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:18,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:45:18,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:18,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960660558] [2022-07-22 23:45:18,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960660558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:18,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:18,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:45:18,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020919780] [2022-07-22 23:45:18,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:18,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:45:18,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:18,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:45:18,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:45:18,344 INFO L87 Difference]: Start difference. First operand 279 states and 373 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:45:18,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:18,580 INFO L93 Difference]: Finished difference Result 602 states and 813 transitions. [2022-07-22 23:45:18,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:45:18,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-07-22 23:45:18,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:18,583 INFO L225 Difference]: With dead ends: 602 [2022-07-22 23:45:18,583 INFO L226 Difference]: Without dead ends: 331 [2022-07-22 23:45:18,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:45:18,586 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 49 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:18,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 458 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 23:45:18,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-07-22 23:45:18,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 280. [2022-07-22 23:45:18,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 229 states have (on average 1.3406113537117903) internal successors, (307), 229 states have internal predecessors, (307), 34 states have call successors, (34), 17 states have call predecessors, (34), 16 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-22 23:45:18,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 374 transitions. [2022-07-22 23:45:18,610 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 374 transitions. Word has length 30 [2022-07-22 23:45:18,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:18,611 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 374 transitions. [2022-07-22 23:45:18,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:45:18,611 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 374 transitions. [2022-07-22 23:45:18,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-22 23:45:18,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:18,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:45:18,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:45:18,613 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:18,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:18,614 INFO L85 PathProgramCache]: Analyzing trace with hash -115857752, now seen corresponding path program 1 times [2022-07-22 23:45:18,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:18,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702993963] [2022-07-22 23:45:18,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:18,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:18,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:45:18,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:18,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702993963] [2022-07-22 23:45:18,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702993963] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:45:18,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196092179] [2022-07-22 23:45:18,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:18,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:45:18,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:45:18,711 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:45:18,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 23:45:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:18,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:45:18,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:45:18,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:45:18,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:45:18,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:45:18,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196092179] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:45:18,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:45:18,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-07-22 23:45:18,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161423444] [2022-07-22 23:45:18,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:45:18,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:45:18,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:18,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:45:18,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:45:18,936 INFO L87 Difference]: Start difference. First operand 280 states and 374 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:45:19,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:19,243 INFO L93 Difference]: Finished difference Result 612 states and 827 transitions. [2022-07-22 23:45:19,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:45:19,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-07-22 23:45:19,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:19,247 INFO L225 Difference]: With dead ends: 612 [2022-07-22 23:45:19,247 INFO L226 Difference]: Without dead ends: 340 [2022-07-22 23:45:19,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:45:19,249 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 63 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:19,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 762 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 23:45:19,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-07-22 23:45:19,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 292. [2022-07-22 23:45:19,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 241 states have (on average 1.3360995850622406) internal successors, (322), 241 states have internal predecessors, (322), 34 states have call successors, (34), 17 states have call predecessors, (34), 16 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-22 23:45:19,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 389 transitions. [2022-07-22 23:45:19,267 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 389 transitions. Word has length 34 [2022-07-22 23:45:19,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:19,268 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 389 transitions. [2022-07-22 23:45:19,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:45:19,268 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 389 transitions. [2022-07-22 23:45:19,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-22 23:45:19,270 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:19,270 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:45:19,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 23:45:19,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:45:19,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:19,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:19,494 INFO L85 PathProgramCache]: Analyzing trace with hash -124336931, now seen corresponding path program 2 times [2022-07-22 23:45:19,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:19,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219403575] [2022-07-22 23:45:19,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:19,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:19,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:19,586 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 23:45:19,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:19,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219403575] [2022-07-22 23:45:19,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219403575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:19,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:19,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:45:19,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327668708] [2022-07-22 23:45:19,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:19,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:45:19,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:19,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:45:19,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:45:19,600 INFO L87 Difference]: Start difference. First operand 292 states and 389 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:45:19,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:19,899 INFO L93 Difference]: Finished difference Result 623 states and 837 transitions. [2022-07-22 23:45:19,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:45:19,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-07-22 23:45:19,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:19,902 INFO L225 Difference]: With dead ends: 623 [2022-07-22 23:45:19,902 INFO L226 Difference]: Without dead ends: 339 [2022-07-22 23:45:19,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:45:19,904 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 356 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:19,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 614 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 23:45:19,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-07-22 23:45:19,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 291. [2022-07-22 23:45:19,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 240 states have (on average 1.325) internal successors, (318), 240 states have internal predecessors, (318), 34 states have call successors, (34), 17 states have call predecessors, (34), 16 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-22 23:45:19,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 385 transitions. [2022-07-22 23:45:19,923 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 385 transitions. Word has length 46 [2022-07-22 23:45:19,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:19,923 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 385 transitions. [2022-07-22 23:45:19,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:45:19,924 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 385 transitions. [2022-07-22 23:45:19,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 23:45:19,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:19,927 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2022-07-22 23:45:19,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:45:19,927 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:19,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:19,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1440028180, now seen corresponding path program 1 times [2022-07-22 23:45:19,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:19,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267602306] [2022-07-22 23:45:19,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:19,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 23:45:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:45:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-22 23:45:20,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:20,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267602306] [2022-07-22 23:45:20,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267602306] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:20,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:20,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:45:20,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525726814] [2022-07-22 23:45:20,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:20,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:45:20,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:20,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:45:20,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:45:20,067 INFO L87 Difference]: Start difference. First operand 291 states and 385 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 23:45:20,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:20,471 INFO L93 Difference]: Finished difference Result 946 states and 1278 transitions. [2022-07-22 23:45:20,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:45:20,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-07-22 23:45:20,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:20,475 INFO L225 Difference]: With dead ends: 946 [2022-07-22 23:45:20,475 INFO L226 Difference]: Without dead ends: 658 [2022-07-22 23:45:20,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:45:20,477 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 262 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:20,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 813 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 23:45:20,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-07-22 23:45:20,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 582. [2022-07-22 23:45:20,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 479 states have (on average 1.3298538622129437) internal successors, (637), 481 states have internal predecessors, (637), 66 states have call successors, (66), 33 states have call predecessors, (66), 36 states have return successors, (75), 67 states have call predecessors, (75), 65 states have call successors, (75) [2022-07-22 23:45:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 778 transitions. [2022-07-22 23:45:20,515 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 778 transitions. Word has length 67 [2022-07-22 23:45:20,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:20,517 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 778 transitions. [2022-07-22 23:45:20,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 23:45:20,518 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 778 transitions. [2022-07-22 23:45:20,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 23:45:20,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:20,527 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-22 23:45:20,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:45:20,530 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:20,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:20,531 INFO L85 PathProgramCache]: Analyzing trace with hash 338916268, now seen corresponding path program 1 times [2022-07-22 23:45:20,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:20,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14444002] [2022-07-22 23:45:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:20,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 23:45:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:45:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 23:45:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 23:45:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-22 23:45:20,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:20,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14444002] [2022-07-22 23:45:20,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14444002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:20,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:20,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:45:20,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456089704] [2022-07-22 23:45:20,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:20,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:45:20,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:20,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:45:20,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:45:20,693 INFO L87 Difference]: Start difference. First operand 582 states and 778 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 23:45:20,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:20,990 INFO L93 Difference]: Finished difference Result 1034 states and 1386 transitions. [2022-07-22 23:45:20,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 23:45:20,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 104 [2022-07-22 23:45:20,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:20,994 INFO L225 Difference]: With dead ends: 1034 [2022-07-22 23:45:20,994 INFO L226 Difference]: Without dead ends: 460 [2022-07-22 23:45:20,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:45:20,996 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 104 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:20,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 545 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 23:45:20,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-07-22 23:45:21,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 378. [2022-07-22 23:45:21,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 319 states have (on average 1.3322884012539185) internal successors, (425), 321 states have internal predecessors, (425), 37 states have call successors, (37), 19 states have call predecessors, (37), 21 states have return successors, (43), 37 states have call predecessors, (43), 36 states have call successors, (43) [2022-07-22 23:45:21,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 505 transitions. [2022-07-22 23:45:21,017 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 505 transitions. Word has length 104 [2022-07-22 23:45:21,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:21,018 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 505 transitions. [2022-07-22 23:45:21,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 23:45:21,018 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 505 transitions. [2022-07-22 23:45:21,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 23:45:21,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:21,020 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-22 23:45:21,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:45:21,020 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:21,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:21,021 INFO L85 PathProgramCache]: Analyzing trace with hash 335119820, now seen corresponding path program 2 times [2022-07-22 23:45:21,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:21,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017645113] [2022-07-22 23:45:21,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:21,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:21,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:21,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 23:45:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:21,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:45:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:21,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 23:45:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:21,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:45:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:21,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 23:45:21,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:21,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017645113] [2022-07-22 23:45:21,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017645113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:21,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:21,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:45:21,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576103830] [2022-07-22 23:45:21,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:21,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:45:21,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:21,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:45:21,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:45:21,204 INFO L87 Difference]: Start difference. First operand 378 states and 505 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 23:45:21,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:21,542 INFO L93 Difference]: Finished difference Result 748 states and 1012 transitions. [2022-07-22 23:45:21,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 23:45:21,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 104 [2022-07-22 23:45:21,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:21,545 INFO L225 Difference]: With dead ends: 748 [2022-07-22 23:45:21,545 INFO L226 Difference]: Without dead ends: 402 [2022-07-22 23:45:21,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:45:21,547 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 72 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:21,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 743 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 23:45:21,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-07-22 23:45:21,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 376. [2022-07-22 23:45:21,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 316 states have (on average 1.3227848101265822) internal successors, (418), 318 states have internal predecessors, (418), 37 states have call successors, (37), 19 states have call predecessors, (37), 22 states have return successors, (46), 38 states have call predecessors, (46), 36 states have call successors, (46) [2022-07-22 23:45:21,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 501 transitions. [2022-07-22 23:45:21,569 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 501 transitions. Word has length 104 [2022-07-22 23:45:21,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:21,573 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 501 transitions. [2022-07-22 23:45:21,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 23:45:21,573 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 501 transitions. [2022-07-22 23:45:21,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 23:45:21,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:21,580 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-22 23:45:21,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 23:45:21,580 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:21,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:21,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1793628438, now seen corresponding path program 1 times [2022-07-22 23:45:21,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:21,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652047366] [2022-07-22 23:45:21,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:21,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:21,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:21,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 23:45:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:21,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:45:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:21,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 23:45:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:21,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:45:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:21,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:21,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:45:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 23:45:21,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:21,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652047366] [2022-07-22 23:45:21,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652047366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:21,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:21,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 23:45:21,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907569579] [2022-07-22 23:45:21,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:21,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 23:45:21,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:21,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 23:45:21,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-22 23:45:21,826 INFO L87 Difference]: Start difference. First operand 376 states and 501 transitions. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 23:45:22,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:22,518 INFO L93 Difference]: Finished difference Result 970 states and 1346 transitions. [2022-07-22 23:45:22,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 23:45:22,519 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 111 [2022-07-22 23:45:22,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:22,522 INFO L225 Difference]: With dead ends: 970 [2022-07-22 23:45:22,522 INFO L226 Difference]: Without dead ends: 626 [2022-07-22 23:45:22,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-22 23:45:22,524 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 150 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:22,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 2634 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 23:45:22,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2022-07-22 23:45:22,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 382. [2022-07-22 23:45:22,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 321 states have (on average 1.3115264797507789) internal successors, (421), 322 states have internal predecessors, (421), 37 states have call successors, (37), 19 states have call predecessors, (37), 23 states have return successors, (47), 40 states have call predecessors, (47), 36 states have call successors, (47) [2022-07-22 23:45:22,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 505 transitions. [2022-07-22 23:45:22,545 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 505 transitions. Word has length 111 [2022-07-22 23:45:22,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:22,546 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 505 transitions. [2022-07-22 23:45:22,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 23:45:22,546 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 505 transitions. [2022-07-22 23:45:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-22 23:45:22,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:22,548 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-22 23:45:22,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 23:45:22,549 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:22,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:22,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1834540397, now seen corresponding path program 1 times [2022-07-22 23:45:22,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:22,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801264558] [2022-07-22 23:45:22,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:22,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:22,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:22,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 23:45:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:22,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:45:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:22,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 23:45:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:22,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:45:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:22,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:22,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:45:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:22,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 23:45:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:22,697 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 7 proven. 28 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 23:45:22,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:22,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801264558] [2022-07-22 23:45:22,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801264558] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:45:22,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535497875] [2022-07-22 23:45:22,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:22,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:45:22,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:45:22,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:45:22,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 23:45:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:22,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 23:45:22,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:45:23,002 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 28 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 23:45:23,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:45:23,097 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 7 proven. 28 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 23:45:23,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535497875] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:45:23,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:45:23,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 16 [2022-07-22 23:45:23,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744406552] [2022-07-22 23:45:23,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:45:23,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 23:45:23,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:23,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 23:45:23,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2022-07-22 23:45:23,099 INFO L87 Difference]: Start difference. First operand 382 states and 505 transitions. Second operand has 16 states, 16 states have (on average 8.6875) internal successors, (139), 13 states have internal predecessors, (139), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 23:45:23,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:23,424 INFO L93 Difference]: Finished difference Result 800 states and 1076 transitions. [2022-07-22 23:45:23,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 23:45:23,424 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.6875) internal successors, (139), 13 states have internal predecessors, (139), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 117 [2022-07-22 23:45:23,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:23,427 INFO L225 Difference]: With dead ends: 800 [2022-07-22 23:45:23,427 INFO L226 Difference]: Without dead ends: 450 [2022-07-22 23:45:23,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2022-07-22 23:45:23,428 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 117 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:23,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 702 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 23:45:23,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-07-22 23:45:23,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 430. [2022-07-22 23:45:23,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 369 states have (on average 1.3035230352303524) internal successors, (481), 370 states have internal predecessors, (481), 37 states have call successors, (37), 19 states have call predecessors, (37), 23 states have return successors, (47), 40 states have call predecessors, (47), 36 states have call successors, (47) [2022-07-22 23:45:23,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 565 transitions. [2022-07-22 23:45:23,450 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 565 transitions. Word has length 117 [2022-07-22 23:45:23,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:23,450 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 565 transitions. [2022-07-22 23:45:23,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.6875) internal successors, (139), 13 states have internal predecessors, (139), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 23:45:23,450 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 565 transitions. [2022-07-22 23:45:23,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-22 23:45:23,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:23,452 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 3, 3, 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] [2022-07-22 23:45:23,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 23:45:23,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-22 23:45:23,672 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:23,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:23,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1065505129, now seen corresponding path program 2 times [2022-07-22 23:45:23,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:23,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396284760] [2022-07-22 23:45:23,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:23,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:23,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:23,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 23:45:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:23,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 23:45:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:23,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 23:45:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:23,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 23:45:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:23,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:23,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:45:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:23,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 23:45:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:23,914 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 7 proven. 190 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 23:45:23,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:23,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396284760] [2022-07-22 23:45:23,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396284760] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:45:23,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876661788] [2022-07-22 23:45:23,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:45:23,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:45:23,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:45:23,916 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:45:23,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 23:45:24,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 23:45:24,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:45:24,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-22 23:45:24,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:45:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-07-22 23:45:24,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:45:24,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876661788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:24,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:45:24,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 29 [2022-07-22 23:45:24,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586026360] [2022-07-22 23:45:24,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:24,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 23:45:24,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:24,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 23:45:24,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2022-07-22 23:45:24,509 INFO L87 Difference]: Start difference. First operand 430 states and 565 transitions. Second operand has 15 states, 14 states have (on average 5.714285714285714) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 23:45:24,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:24,940 INFO L93 Difference]: Finished difference Result 1098 states and 1476 transitions. [2022-07-22 23:45:24,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 23:45:24,941 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.714285714285714) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 141 [2022-07-22 23:45:24,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:24,944 INFO L225 Difference]: With dead ends: 1098 [2022-07-22 23:45:24,945 INFO L226 Difference]: Without dead ends: 700 [2022-07-22 23:45:24,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2022-07-22 23:45:24,947 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 297 mSDsluCounter, 3499 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 3822 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:24,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 3822 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 23:45:24,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-07-22 23:45:24,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 440. [2022-07-22 23:45:24,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 377 states have (on average 1.297082228116711) internal successors, (489), 378 states have internal predecessors, (489), 39 states have call successors, (39), 19 states have call predecessors, (39), 23 states have return successors, (49), 42 states have call predecessors, (49), 38 states have call successors, (49) [2022-07-22 23:45:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 577 transitions. [2022-07-22 23:45:24,977 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 577 transitions. Word has length 141 [2022-07-22 23:45:24,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:24,978 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 577 transitions. [2022-07-22 23:45:24,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.714285714285714) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 23:45:24,978 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 577 transitions. [2022-07-22 23:45:24,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-22 23:45:24,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:24,980 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 3, 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] [2022-07-22 23:45:25,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 23:45:25,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:45:25,196 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:25,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:25,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1149357710, now seen corresponding path program 1 times [2022-07-22 23:45:25,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:25,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110150958] [2022-07-22 23:45:25,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:25,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:25,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:25,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 23:45:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:25,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 23:45:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:25,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 23:45:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:25,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 23:45:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:25,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:25,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 23:45:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:25,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 23:45:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:25,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 23:45:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-22 23:45:25,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:25,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110150958] [2022-07-22 23:45:25,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110150958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:25,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:25,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 23:45:25,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726054866] [2022-07-22 23:45:25,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:25,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:45:25,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:25,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:45:25,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:45:25,383 INFO L87 Difference]: Start difference. First operand 440 states and 577 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-22 23:45:25,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:25,653 INFO L93 Difference]: Finished difference Result 673 states and 894 transitions. [2022-07-22 23:45:25,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:45:25,654 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 154 [2022-07-22 23:45:25,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:25,657 INFO L225 Difference]: With dead ends: 673 [2022-07-22 23:45:25,657 INFO L226 Difference]: Without dead ends: 462 [2022-07-22 23:45:25,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:45:25,658 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 167 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:25,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 567 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 23:45:25,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-07-22 23:45:25,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 442. [2022-07-22 23:45:25,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 379 states have (on average 1.2955145118733509) internal successors, (491), 380 states have internal predecessors, (491), 39 states have call successors, (39), 19 states have call predecessors, (39), 23 states have return successors, (49), 42 states have call predecessors, (49), 38 states have call successors, (49) [2022-07-22 23:45:25,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 579 transitions. [2022-07-22 23:45:25,683 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 579 transitions. Word has length 154 [2022-07-22 23:45:25,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:25,683 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 579 transitions. [2022-07-22 23:45:25,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-22 23:45:25,684 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 579 transitions. [2022-07-22 23:45:25,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 23:45:25,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:25,686 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 3, 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] [2022-07-22 23:45:25,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 23:45:25,686 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:25,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:25,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1983743405, now seen corresponding path program 1 times [2022-07-22 23:45:25,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:25,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908453131] [2022-07-22 23:45:25,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:25,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:25,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:25,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 23:45:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:25,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 23:45:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:25,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 23:45:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:25,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 23:45:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:25,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:25,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 23:45:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:25,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 23:45:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:25,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 23:45:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:26,028 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-22 23:45:26,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:26,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908453131] [2022-07-22 23:45:26,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908453131] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:26,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:26,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 23:45:26,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150546888] [2022-07-22 23:45:26,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:26,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 23:45:26,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:26,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 23:45:26,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-07-22 23:45:26,031 INFO L87 Difference]: Start difference. First operand 442 states and 579 transitions. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 23:45:26,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:26,700 INFO L93 Difference]: Finished difference Result 880 states and 1161 transitions. [2022-07-22 23:45:26,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 23:45:26,701 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156 [2022-07-22 23:45:26,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:26,703 INFO L225 Difference]: With dead ends: 880 [2022-07-22 23:45:26,703 INFO L226 Difference]: Without dead ends: 470 [2022-07-22 23:45:26,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2022-07-22 23:45:26,705 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 513 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:26,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 808 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 23:45:26,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-07-22 23:45:26,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 440. [2022-07-22 23:45:26,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 377 states have (on average 1.2891246684350133) internal successors, (486), 378 states have internal predecessors, (486), 39 states have call successors, (39), 19 states have call predecessors, (39), 23 states have return successors, (48), 42 states have call predecessors, (48), 38 states have call successors, (48) [2022-07-22 23:45:26,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 573 transitions. [2022-07-22 23:45:26,731 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 573 transitions. Word has length 156 [2022-07-22 23:45:26,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:26,732 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 573 transitions. [2022-07-22 23:45:26,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 23:45:26,732 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 573 transitions. [2022-07-22 23:45:26,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 23:45:26,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:26,734 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 3, 3, 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] [2022-07-22 23:45:26,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 23:45:26,734 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:26,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:26,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2106669318, now seen corresponding path program 1 times [2022-07-22 23:45:26,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:26,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717964682] [2022-07-22 23:45:26,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:26,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:26,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:26,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 23:45:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:26,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 23:45:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:26,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 23:45:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:26,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 23:45:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:26,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:26,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:45:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:26,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 23:45:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:26,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 23:45:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:26,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-22 23:45:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:27,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-22 23:45:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 7 proven. 190 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 23:45:27,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:27,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717964682] [2022-07-22 23:45:27,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717964682] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:45:27,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310123578] [2022-07-22 23:45:27,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:27,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:45:27,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:45:27,028 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:45:27,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 23:45:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:27,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 23:45:27,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:45:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 19 proven. 190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 23:45:27,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:45:27,689 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 7 proven. 190 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 23:45:27,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310123578] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:45:27,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:45:27,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 30 [2022-07-22 23:45:27,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729421819] [2022-07-22 23:45:27,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:45:27,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-22 23:45:27,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:27,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-22 23:45:27,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=554, Unknown=0, NotChecked=0, Total=870 [2022-07-22 23:45:27,694 INFO L87 Difference]: Start difference. First operand 440 states and 573 transitions. Second operand has 30 states, 30 states have (on average 7.2) internal successors, (216), 25 states have internal predecessors, (216), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 23:45:28,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:28,205 INFO L93 Difference]: Finished difference Result 966 states and 1287 transitions. [2022-07-22 23:45:28,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 23:45:28,206 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.2) internal successors, (216), 25 states have internal predecessors, (216), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 168 [2022-07-22 23:45:28,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:28,208 INFO L225 Difference]: With dead ends: 966 [2022-07-22 23:45:28,209 INFO L226 Difference]: Without dead ends: 558 [2022-07-22 23:45:28,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=322, Invalid=608, Unknown=0, NotChecked=0, Total=930 [2022-07-22 23:45:28,210 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 178 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:28,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1338 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 23:45:28,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-07-22 23:45:28,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 536. [2022-07-22 23:45:28,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 473 states have (on average 1.2811839323467231) internal successors, (606), 474 states have internal predecessors, (606), 39 states have call successors, (39), 19 states have call predecessors, (39), 23 states have return successors, (48), 42 states have call predecessors, (48), 38 states have call successors, (48) [2022-07-22 23:45:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 693 transitions. [2022-07-22 23:45:28,244 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 693 transitions. Word has length 168 [2022-07-22 23:45:28,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:28,244 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 693 transitions. [2022-07-22 23:45:28,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.2) internal successors, (216), 25 states have internal predecessors, (216), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 23:45:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 693 transitions. [2022-07-22 23:45:28,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-22 23:45:28,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:28,248 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 4, 4, 3, 3, 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] [2022-07-22 23:45:28,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 23:45:28,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:45:28,467 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:28,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:28,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1303518258, now seen corresponding path program 2 times [2022-07-22 23:45:28,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:28,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136558166] [2022-07-22 23:45:28,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:28,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 23:45:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 23:45:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 23:45:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 23:45:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:45:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 23:45:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 23:45:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-22 23:45:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:29,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-22 23:45:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:29,019 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 7 proven. 946 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 23:45:29,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:29,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136558166] [2022-07-22 23:45:29,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136558166] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:45:29,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389045320] [2022-07-22 23:45:29,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:45:29,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:45:29,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:45:29,022 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:45:29,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 23:45:29,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 23:45:29,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:45:29,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:45:29,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:45:29,302 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 976 trivial. 0 not checked. [2022-07-22 23:45:29,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:45:29,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389045320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:29,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:45:29,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [30] total 31 [2022-07-22 23:45:29,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048634820] [2022-07-22 23:45:29,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:29,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:45:29,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:29,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:45:29,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2022-07-22 23:45:29,305 INFO L87 Difference]: Start difference. First operand 536 states and 693 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:45:29,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:29,358 INFO L93 Difference]: Finished difference Result 1346 states and 1766 transitions. [2022-07-22 23:45:29,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:45:29,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 216 [2022-07-22 23:45:29,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:29,363 INFO L225 Difference]: With dead ends: 1346 [2022-07-22 23:45:29,363 INFO L226 Difference]: Without dead ends: 842 [2022-07-22 23:45:29,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2022-07-22 23:45:29,365 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 83 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:29,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 471 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:45:29,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-07-22 23:45:29,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 532. [2022-07-22 23:45:29,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 471 states have (on average 1.2781316348195328) internal successors, (602), 472 states have internal predecessors, (602), 37 states have call successors, (37), 19 states have call predecessors, (37), 23 states have return successors, (46), 40 states have call predecessors, (46), 36 states have call successors, (46) [2022-07-22 23:45:29,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 685 transitions. [2022-07-22 23:45:29,401 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 685 transitions. Word has length 216 [2022-07-22 23:45:29,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:29,402 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 685 transitions. [2022-07-22 23:45:29,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:45:29,402 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 685 transitions. [2022-07-22 23:45:29,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-22 23:45:29,404 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:29,405 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 4, 4, 3, 3, 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] [2022-07-22 23:45:29,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 23:45:29,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 23:45:29,619 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:29,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:29,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1768078862, now seen corresponding path program 1 times [2022-07-22 23:45:29,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:29,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167252629] [2022-07-22 23:45:29,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:29,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:30,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:30,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 23:45:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:30,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 23:45:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:30,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 23:45:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:30,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 23:45:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:30,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:30,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:45:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:30,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 23:45:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:30,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 23:45:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:30,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-22 23:45:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:30,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-22 23:45:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:30,134 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 7 proven. 946 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 23:45:30,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:30,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167252629] [2022-07-22 23:45:30,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167252629] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:45:30,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047490207] [2022-07-22 23:45:30,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:30,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:45:30,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:45:30,136 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:45:30,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 23:45:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:30,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-22 23:45:30,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:45:30,635 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 19 proven. 946 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 23:45:30,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:45:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 7 proven. 946 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 23:45:31,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047490207] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:45:31,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:45:31,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25, 25] total 54 [2022-07-22 23:45:31,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106104341] [2022-07-22 23:45:31,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:45:31,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-07-22 23:45:31,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:31,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-07-22 23:45:31,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1192, Invalid=1670, Unknown=0, NotChecked=0, Total=2862 [2022-07-22 23:45:31,486 INFO L87 Difference]: Start difference. First operand 532 states and 685 transitions. Second operand has 54 states, 54 states have (on average 5.777777777777778) internal successors, (312), 49 states have internal predecessors, (312), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 23:45:32,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:32,126 INFO L93 Difference]: Finished difference Result 1246 states and 1653 transitions. [2022-07-22 23:45:32,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-22 23:45:32,127 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.777777777777778) internal successors, (312), 49 states have internal predecessors, (312), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 216 [2022-07-22 23:45:32,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:32,130 INFO L225 Difference]: With dead ends: 1246 [2022-07-22 23:45:32,130 INFO L226 Difference]: Without dead ends: 746 [2022-07-22 23:45:32,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1198, Invalid=1772, Unknown=0, NotChecked=0, Total=2970 [2022-07-22 23:45:32,134 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 512 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:32,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 967 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 23:45:32,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-07-22 23:45:32,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 724. [2022-07-22 23:45:32,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 663 states have (on average 1.2699849170437405) internal successors, (842), 664 states have internal predecessors, (842), 37 states have call successors, (37), 19 states have call predecessors, (37), 23 states have return successors, (46), 40 states have call predecessors, (46), 36 states have call successors, (46) [2022-07-22 23:45:32,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 925 transitions. [2022-07-22 23:45:32,196 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 925 transitions. Word has length 216 [2022-07-22 23:45:32,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:32,197 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 925 transitions. [2022-07-22 23:45:32,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.777777777777778) internal successors, (312), 49 states have internal predecessors, (312), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 23:45:32,197 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 925 transitions. [2022-07-22 23:45:32,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-07-22 23:45:32,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:32,201 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 4, 4, 3, 3, 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] [2022-07-22 23:45:32,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 23:45:32,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-22 23:45:32,425 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:32,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:32,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1934856118, now seen corresponding path program 2 times [2022-07-22 23:45:32,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:32,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412553926] [2022-07-22 23:45:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:32,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:33,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:33,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-22 23:45:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:33,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-22 23:45:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:33,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-22 23:45:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:33,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-07-22 23:45:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:33,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:33,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:45:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:33,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-22 23:45:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:33,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-07-22 23:45:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:33,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-22 23:45:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:33,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-07-22 23:45:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4223 backedges. 7 proven. 4186 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 23:45:33,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:33,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412553926] [2022-07-22 23:45:33,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412553926] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:45:33,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44492363] [2022-07-22 23:45:33,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:45:33,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:45:33,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:45:33,772 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:45:33,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 23:45:34,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 23:45:34,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:45:34,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 23:45:34,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:45:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4223 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4216 trivial. 0 not checked. [2022-07-22 23:45:34,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:45:34,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44492363] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:34,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:45:34,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [54] total 57 [2022-07-22 23:45:34,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433475520] [2022-07-22 23:45:34,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:34,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:45:34,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:34,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:45:34,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1198, Invalid=1994, Unknown=0, NotChecked=0, Total=3192 [2022-07-22 23:45:34,244 INFO L87 Difference]: Start difference. First operand 724 states and 925 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 23:45:34,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:34,377 INFO L93 Difference]: Finished difference Result 1924 states and 2484 transitions. [2022-07-22 23:45:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:45:34,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 312 [2022-07-22 23:45:34,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:34,383 INFO L225 Difference]: With dead ends: 1924 [2022-07-22 23:45:34,383 INFO L226 Difference]: Without dead ends: 1228 [2022-07-22 23:45:34,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1202, Invalid=2104, Unknown=0, NotChecked=0, Total=3306 [2022-07-22 23:45:34,386 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 84 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:34,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1018 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:45:34,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2022-07-22 23:45:34,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 726. [2022-07-22 23:45:34,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 665 states have (on average 1.2691729323308272) internal successors, (844), 666 states have internal predecessors, (844), 37 states have call successors, (37), 19 states have call predecessors, (37), 23 states have return successors, (46), 40 states have call predecessors, (46), 36 states have call successors, (46) [2022-07-22 23:45:34,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 927 transitions. [2022-07-22 23:45:34,440 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 927 transitions. Word has length 312 [2022-07-22 23:45:34,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:34,440 INFO L495 AbstractCegarLoop]: Abstraction has 726 states and 927 transitions. [2022-07-22 23:45:34,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 23:45:34,441 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 927 transitions. [2022-07-22 23:45:34,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-07-22 23:45:34,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:34,444 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 4, 4, 3, 3, 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] [2022-07-22 23:45:34,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 23:45:34,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:45:34,659 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:34,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:34,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1480488866, now seen corresponding path program 1 times [2022-07-22 23:45:34,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:34,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128566623] [2022-07-22 23:45:34,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:34,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:35,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:35,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-22 23:45:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:35,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-22 23:45:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:35,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-22 23:45:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:35,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-07-22 23:45:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:35,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:35,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:45:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:35,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-22 23:45:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:35,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-07-22 23:45:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:35,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-22 23:45:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:35,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-07-22 23:45:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:35,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4224 backedges. 7 proven. 4186 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-22 23:45:35,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:35,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128566623] [2022-07-22 23:45:35,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128566623] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:45:35,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807795012] [2022-07-22 23:45:35,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:35,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:45:35,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:45:35,944 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:45:35,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 23:45:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:36,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-22 23:45:36,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:45:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4224 backedges. 19 proven. 4186 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 23:45:36,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:45:39,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4224 backedges. 7 proven. 4186 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-22 23:45:39,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807795012] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:45:39,157 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:45:39,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 49, 49] total 102 [2022-07-22 23:45:39,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577417851] [2022-07-22 23:45:39,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:45:39,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-07-22 23:45:39,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:39,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-07-22 23:45:39,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4672, Invalid=5630, Unknown=0, NotChecked=0, Total=10302 [2022-07-22 23:45:39,164 INFO L87 Difference]: Start difference. First operand 726 states and 927 transitions. Second operand has 102 states, 102 states have (on average 4.96078431372549) internal successors, (506), 97 states have internal predecessors, (506), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 23:45:40,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:40,445 INFO L93 Difference]: Finished difference Result 1822 states and 2419 transitions. [2022-07-22 23:45:40,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-07-22 23:45:40,446 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 4.96078431372549) internal successors, (506), 97 states have internal predecessors, (506), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 313 [2022-07-22 23:45:40,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:40,451 INFO L225 Difference]: With dead ends: 1822 [2022-07-22 23:45:40,451 INFO L226 Difference]: Without dead ends: 1128 [2022-07-22 23:45:40,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4678, Invalid=5828, Unknown=0, NotChecked=0, Total=10506 [2022-07-22 23:45:40,455 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 968 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:40,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 1384 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 23:45:40,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2022-07-22 23:45:40,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1110. [2022-07-22 23:45:40,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1049 states have (on average 1.2621544327931362) internal successors, (1324), 1050 states have internal predecessors, (1324), 37 states have call successors, (37), 19 states have call predecessors, (37), 23 states have return successors, (46), 40 states have call predecessors, (46), 36 states have call successors, (46) [2022-07-22 23:45:40,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1407 transitions. [2022-07-22 23:45:40,543 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1407 transitions. Word has length 313 [2022-07-22 23:45:40,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:40,544 INFO L495 AbstractCegarLoop]: Abstraction has 1110 states and 1407 transitions. [2022-07-22 23:45:40,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 4.96078431372549) internal successors, (506), 97 states have internal predecessors, (506), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 23:45:40,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1407 transitions. [2022-07-22 23:45:40,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2022-07-22 23:45:40,553 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:40,554 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 4, 4, 3, 3, 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] [2022-07-22 23:45:40,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 23:45:40,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-22 23:45:40,764 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:40,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:40,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1574301454, now seen corresponding path program 2 times [2022-07-22 23:45:40,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:40,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946435170] [2022-07-22 23:45:40,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:40,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:44,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:44,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-07-22 23:45:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:44,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-07-22 23:45:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:44,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-07-22 23:45:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:44,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-07-22 23:45:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:44,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:44,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:45:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:44,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-07-22 23:45:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:44,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-07-22 23:45:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:44,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-07-22 23:45:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:44,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-07-22 23:45:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:44,494 INFO L134 CoverageAnalysis]: Checked inductivity of 17616 backedges. 7 proven. 17578 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-22 23:45:44,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:44,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946435170] [2022-07-22 23:45:44,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946435170] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:45:44,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055016503] [2022-07-22 23:45:44,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:45:44,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:45:44,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:45:44,497 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:45:44,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 23:45:44,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 23:45:44,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:45:44,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 23:45:44,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:45:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 17616 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17609 trivial. 0 not checked. [2022-07-22 23:45:45,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:45:45,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055016503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:45,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:45:45,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [102] total 105 [2022-07-22 23:45:45,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708376783] [2022-07-22 23:45:45,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:45,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:45:45,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:45,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:45:45,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4678, Invalid=6242, Unknown=0, NotChecked=0, Total=10920 [2022-07-22 23:45:45,106 INFO L87 Difference]: Start difference. First operand 1110 states and 1407 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 23:45:45,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:45,321 INFO L93 Difference]: Finished difference Result 3078 states and 3928 transitions. [2022-07-22 23:45:45,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:45:45,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 505 [2022-07-22 23:45:45,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:45,330 INFO L225 Difference]: With dead ends: 3078 [2022-07-22 23:45:45,330 INFO L226 Difference]: Without dead ends: 1998 [2022-07-22 23:45:45,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4682, Invalid=6448, Unknown=0, NotChecked=0, Total=11130 [2022-07-22 23:45:45,335 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 83 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:45,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 1018 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:45:45,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2022-07-22 23:45:45,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1112. [2022-07-22 23:45:45,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1051 states have (on average 1.2616555661274975) internal successors, (1326), 1052 states have internal predecessors, (1326), 37 states have call successors, (37), 19 states have call predecessors, (37), 23 states have return successors, (46), 40 states have call predecessors, (46), 36 states have call successors, (46) [2022-07-22 23:45:45,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1409 transitions. [2022-07-22 23:45:45,428 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1409 transitions. Word has length 505 [2022-07-22 23:45:45,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:45,429 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 1409 transitions. [2022-07-22 23:45:45,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 23:45:45,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1409 transitions. [2022-07-22 23:45:45,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2022-07-22 23:45:45,433 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:45,433 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 4, 4, 3, 3, 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] [2022-07-22 23:45:45,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 23:45:45,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-22 23:45:45,647 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:45,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:45,648 INFO L85 PathProgramCache]: Analyzing trace with hash -249914232, now seen corresponding path program 1 times [2022-07-22 23:45:45,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:45,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105981165] [2022-07-22 23:45:45,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:45,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:49,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:49,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-07-22 23:45:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:49,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-07-22 23:45:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:49,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-07-22 23:45:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:49,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-07-22 23:45:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:49,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:49,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:45:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:49,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-07-22 23:45:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:49,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-07-22 23:45:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:49,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-07-22 23:45:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:49,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-07-22 23:45:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 17617 backedges. 7 proven. 17578 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-22 23:45:49,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:49,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105981165] [2022-07-22 23:45:49,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105981165] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:45:49,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677115941] [2022-07-22 23:45:49,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:49,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:45:49,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:45:49,380 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:45:49,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 23:45:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:50,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 2961 conjuncts, 96 conjunts are in the unsatisfiable core [2022-07-22 23:45:50,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:45:50,638 INFO L134 CoverageAnalysis]: Checked inductivity of 17617 backedges. 19 proven. 17578 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 23:45:50,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:45:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 17617 backedges. 7 proven. 17578 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-22 23:45:59,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677115941] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:45:59,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:45:59,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 97, 97] total 198 [2022-07-22 23:45:59,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783928904] [2022-07-22 23:45:59,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:45:59,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 198 states [2022-07-22 23:45:59,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:59,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2022-07-22 23:45:59,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18544, Invalid=20462, Unknown=0, NotChecked=0, Total=39006 [2022-07-22 23:45:59,415 INFO L87 Difference]: Start difference. First operand 1112 states and 1409 transitions. Second operand has 198 states, 198 states have (on average 4.505050505050505) internal successors, (892), 193 states have internal predecessors, (892), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 23:46:04,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:46:04,377 INFO L93 Difference]: Finished difference Result 2974 states and 3953 transitions. [2022-07-22 23:46:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2022-07-22 23:46:04,378 INFO L78 Accepts]: Start accepts. Automaton has has 198 states, 198 states have (on average 4.505050505050505) internal successors, (892), 193 states have internal predecessors, (892), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 506 [2022-07-22 23:46:04,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:46:04,386 INFO L225 Difference]: With dead ends: 2974 [2022-07-22 23:46:04,386 INFO L226 Difference]: Without dead ends: 1894 [2022-07-22 23:46:04,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1131 GetRequests, 934 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=18550, Invalid=20852, Unknown=0, NotChecked=0, Total=39402 [2022-07-22 23:46:04,391 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 1839 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:46:04,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1840 Valid, 1895 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 23:46:04,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2022-07-22 23:46:04,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1880. [2022-07-22 23:46:04,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1819 states have (on average 1.2567344694887301) internal successors, (2286), 1820 states have internal predecessors, (2286), 37 states have call successors, (37), 19 states have call predecessors, (37), 23 states have return successors, (46), 40 states have call predecessors, (46), 36 states have call successors, (46) [2022-07-22 23:46:04,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 2369 transitions. [2022-07-22 23:46:04,546 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 2369 transitions. Word has length 506 [2022-07-22 23:46:04,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:46:04,547 INFO L495 AbstractCegarLoop]: Abstraction has 1880 states and 2369 transitions. [2022-07-22 23:46:04,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 198 states, 198 states have (on average 4.505050505050505) internal successors, (892), 193 states have internal predecessors, (892), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 23:46:04,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 2369 transitions. [2022-07-22 23:46:04,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2022-07-22 23:46:04,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:46:04,556 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 4, 4, 3, 3, 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] [2022-07-22 23:46:04,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-22 23:46:04,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:46:04,771 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:46:04,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:46:04,772 INFO L85 PathProgramCache]: Analyzing trace with hash 164952872, now seen corresponding path program 2 times [2022-07-22 23:46:04,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:46:04,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366187108] [2022-07-22 23:46:04,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:04,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:46:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:17,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:17,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2022-07-22 23:46:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:17,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 790 [2022-07-22 23:46:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:17,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 805 [2022-07-22 23:46:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:17,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2022-07-22 23:46:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:17,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:17,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:46:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:17,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 836 [2022-07-22 23:46:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:17,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 847 [2022-07-22 23:46:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:17,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2022-07-22 23:46:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:17,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 866 [2022-07-22 23:46:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 72049 backedges. 7 proven. 72010 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-22 23:46:17,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:46:17,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366187108] [2022-07-22 23:46:17,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366187108] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:46:17,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646648828] [2022-07-22 23:46:17,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:46:17,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:46:17,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:46:17,688 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:46:17,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 23:46:18,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 23:46:18,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:46:18,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 4977 conjuncts, 192 conjunts are in the unsatisfiable core [2022-07-22 23:46:18,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:46:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 72049 backedges. 19 proven. 72010 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 23:46:19,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:46:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 72049 backedges. 7 proven. 72010 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-22 23:46:29,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646648828] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:46:29,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:46:29,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [198, 193, 193] total 264 [2022-07-22 23:46:29,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676634141] [2022-07-22 23:46:29,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:46:29,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 264 states [2022-07-22 23:46:29,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:46:29,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 264 interpolants. [2022-07-22 23:46:29,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33427, Invalid=36005, Unknown=0, NotChecked=0, Total=69432 [2022-07-22 23:46:29,457 INFO L87 Difference]: Start difference. First operand 1880 states and 2369 transitions. Second operand has 264 states, 264 states have (on average 4.393939393939394) internal successors, (1160), 259 states have internal predecessors, (1160), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 23:46:41,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:46:41,057 INFO L93 Difference]: Finished difference Result 4270 states and 5513 transitions. [2022-07-22 23:46:41,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2022-07-22 23:46:41,059 INFO L78 Accepts]: Start accepts. Automaton has has 264 states, 264 states have (on average 4.393939393939394) internal successors, (1160), 259 states have internal predecessors, (1160), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 890 [2022-07-22 23:46:41,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:46:41,069 INFO L225 Difference]: With dead ends: 4270 [2022-07-22 23:46:41,069 INFO L226 Difference]: Without dead ends: 2422 [2022-07-22 23:46:41,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1995 GetRequests, 1732 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1859 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=33433, Invalid=36527, Unknown=0, NotChecked=0, Total=69960 [2022-07-22 23:46:41,078 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 2204 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2205 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:46:41,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2205 Valid, 1916 Invalid, 1723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1689 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 23:46:41,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2022-07-22 23:46:41,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 2408. [2022-07-22 23:46:41,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 2347 states have (on average 1.2552194290583725) internal successors, (2946), 2348 states have internal predecessors, (2946), 37 states have call successors, (37), 19 states have call predecessors, (37), 23 states have return successors, (46), 40 states have call predecessors, (46), 36 states have call successors, (46) [2022-07-22 23:46:41,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 3029 transitions. [2022-07-22 23:46:41,279 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 3029 transitions. Word has length 890 [2022-07-22 23:46:41,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:46:41,280 INFO L495 AbstractCegarLoop]: Abstraction has 2408 states and 3029 transitions. [2022-07-22 23:46:41,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 264 states, 264 states have (on average 4.393939393939394) internal successors, (1160), 259 states have internal predecessors, (1160), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 23:46:41,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 3029 transitions. [2022-07-22 23:46:41,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1155 [2022-07-22 23:46:41,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:46:41,299 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 256, 4, 4, 3, 3, 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] [2022-07-22 23:46:41,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-22 23:46:41,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:46:41,515 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:46:41,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:46:41,516 INFO L85 PathProgramCache]: Analyzing trace with hash -166726346, now seen corresponding path program 3 times [2022-07-22 23:46:41,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:46:41,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701362332] [2022-07-22 23:46:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:41,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:46:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:43,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:43,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1048 [2022-07-22 23:46:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:43,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1054 [2022-07-22 23:46:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:43,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1069 [2022-07-22 23:46:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:43,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1076 [2022-07-22 23:46:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:43,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:43,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:46:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:43,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1100 [2022-07-22 23:46:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:43,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1111 [2022-07-22 23:46:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:43,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1119 [2022-07-22 23:46:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:43,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1130 [2022-07-22 23:46:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 130855 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 130848 trivial. 0 not checked. [2022-07-22 23:46:43,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:46:43,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701362332] [2022-07-22 23:46:43,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701362332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:46:43,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:46:43,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 23:46:43,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650171792] [2022-07-22 23:46:43,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:46:43,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 23:46:43,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:46:43,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 23:46:43,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:46:43,155 INFO L87 Difference]: Start difference. First operand 2408 states and 3029 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 8 states have internal predecessors, (99), 5 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-22 23:46:44,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:46:44,245 INFO L93 Difference]: Finished difference Result 4846 states and 6105 transitions. [2022-07-22 23:46:44,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-22 23:46:44,246 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 8 states have internal predecessors, (99), 5 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 1154 [2022-07-22 23:46:44,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:46:44,260 INFO L225 Difference]: With dead ends: 4846 [2022-07-22 23:46:44,261 INFO L226 Difference]: Without dead ends: 3649 [2022-07-22 23:46:44,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870 [2022-07-22 23:46:44,266 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1233 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:46:44,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 1429 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 23:46:44,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2022-07-22 23:46:44,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 3601. [2022-07-22 23:46:44,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 3511 states have (on average 1.2560524067217318) internal successors, (4410), 3514 states have internal predecessors, (4410), 54 states have call successors, (54), 27 states have call predecessors, (54), 35 states have return successors, (69), 59 states have call predecessors, (69), 53 states have call successors, (69) [2022-07-22 23:46:44,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 4533 transitions. [2022-07-22 23:46:44,637 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 4533 transitions. Word has length 1154 [2022-07-22 23:46:44,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:46:44,639 INFO L495 AbstractCegarLoop]: Abstraction has 3601 states and 4533 transitions. [2022-07-22 23:46:44,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 8 states have internal predecessors, (99), 5 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-22 23:46:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 4533 transitions. [2022-07-22 23:46:44,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1157 [2022-07-22 23:46:44,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:46:44,653 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 256, 4, 4, 3, 3, 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] [2022-07-22 23:46:44,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 23:46:44,654 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:46:44,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:46:44,654 INFO L85 PathProgramCache]: Analyzing trace with hash 263245175, now seen corresponding path program 1 times [2022-07-22 23:46:44,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:46:44,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269486363] [2022-07-22 23:46:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:44,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:46:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:45,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:45,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1048 [2022-07-22 23:46:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:45,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1054 [2022-07-22 23:46:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:45,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1069 [2022-07-22 23:46:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:45,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1076 [2022-07-22 23:46:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:45,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:45,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:46:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:45,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1100 [2022-07-22 23:46:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:45,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1111 [2022-07-22 23:46:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:45,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1119 [2022-07-22 23:46:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:45,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1130 [2022-07-22 23:46:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:45,707 INFO L134 CoverageAnalysis]: Checked inductivity of 130855 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 130848 trivial. 0 not checked. [2022-07-22 23:46:45,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:46:45,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269486363] [2022-07-22 23:46:45,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269486363] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:46:45,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:46:45,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 23:46:45,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222236963] [2022-07-22 23:46:45,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:46:45,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 23:46:45,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:46:45,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 23:46:45,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:46:45,710 INFO L87 Difference]: Start difference. First operand 3601 states and 4533 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 23:46:46,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:46:46,208 INFO L93 Difference]: Finished difference Result 6010 states and 7577 transitions. [2022-07-22 23:46:46,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:46:46,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 1156 [2022-07-22 23:46:46,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:46:46,224 INFO L225 Difference]: With dead ends: 6010 [2022-07-22 23:46:46,225 INFO L226 Difference]: Without dead ends: 3623 [2022-07-22 23:46:46,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:46:46,231 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 96 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:46:46,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 906 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 23:46:46,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2022-07-22 23:46:46,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3601. [2022-07-22 23:46:46,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 3511 states have (on average 1.2554827684420393) internal successors, (4408), 3514 states have internal predecessors, (4408), 54 states have call successors, (54), 27 states have call predecessors, (54), 35 states have return successors, (69), 59 states have call predecessors, (69), 53 states have call successors, (69) [2022-07-22 23:46:46,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 4531 transitions. [2022-07-22 23:46:46,592 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 4531 transitions. Word has length 1156 [2022-07-22 23:46:46,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:46:46,593 INFO L495 AbstractCegarLoop]: Abstraction has 3601 states and 4531 transitions. [2022-07-22 23:46:46,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 23:46:46,594 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 4531 transitions. [2022-07-22 23:46:46,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1159 [2022-07-22 23:46:46,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:46:46,606 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 256, 4, 4, 3, 3, 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] [2022-07-22 23:46:46,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 23:46:46,607 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:46:46,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:46:46,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2137122658, now seen corresponding path program 1 times [2022-07-22 23:46:46,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:46:46,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665802455] [2022-07-22 23:46:46,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:46,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:47:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:46,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:47:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:46,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1048 [2022-07-22 23:47:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:46,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1054 [2022-07-22 23:47:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:46,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1069 [2022-07-22 23:47:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:46,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1076 [2022-07-22 23:47:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:46,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:46,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:47:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:46,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1100 [2022-07-22 23:47:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:46,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1111 [2022-07-22 23:47:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:46,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1119 [2022-07-22 23:47:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:46,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1130 [2022-07-22 23:47:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:46,774 INFO L134 CoverageAnalysis]: Checked inductivity of 130857 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 130850 trivial. 0 not checked. [2022-07-22 23:47:46,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:47:46,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665802455] [2022-07-22 23:47:46,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665802455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:47:46,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:47:46,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 23:47:46,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127187151] [2022-07-22 23:47:46,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:47:46,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 23:47:46,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:47:46,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 23:47:46,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:47:46,777 INFO L87 Difference]: Start difference. First operand 3601 states and 4531 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (12), 7 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-22 23:47:48,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:48,059 INFO L93 Difference]: Finished difference Result 11651 states and 14736 transitions. [2022-07-22 23:47:48,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:47:48,060 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (12), 7 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 1158 [2022-07-22 23:47:48,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:48,099 INFO L225 Difference]: With dead ends: 11651 [2022-07-22 23:47:48,099 INFO L226 Difference]: Without dead ends: 8082 [2022-07-22 23:47:48,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:47:48,109 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 353 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:48,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 1423 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 23:47:48,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8082 states. [2022-07-22 23:47:48,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8082 to 3676. [2022-07-22 23:47:48,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3571 states have (on average 1.252870344441333) internal successors, (4474), 3571 states have internal predecessors, (4474), 69 states have call successors, (69), 27 states have call predecessors, (69), 35 states have return successors, (90), 77 states have call predecessors, (90), 68 states have call successors, (90) [2022-07-22 23:47:48,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 4633 transitions. [2022-07-22 23:47:48,557 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 4633 transitions. Word has length 1158 [2022-07-22 23:47:48,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:48,558 INFO L495 AbstractCegarLoop]: Abstraction has 3676 states and 4633 transitions. [2022-07-22 23:47:48,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (12), 7 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-22 23:47:48,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 4633 transitions. [2022-07-22 23:47:48,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1159 [2022-07-22 23:47:48,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:48,572 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 256, 4, 4, 3, 3, 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] [2022-07-22 23:47:48,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 23:47:48,572 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:48,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:48,573 INFO L85 PathProgramCache]: Analyzing trace with hash 278713692, now seen corresponding path program 1 times [2022-07-22 23:47:48,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:47:48,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301948272] [2022-07-22 23:47:48,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:48,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:48:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:17,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:48:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:17,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1048 [2022-07-22 23:48:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:17,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1054 [2022-07-22 23:48:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:17,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1069 [2022-07-22 23:48:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:17,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1076 [2022-07-22 23:48:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:17,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:17,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:48:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:17,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1100 [2022-07-22 23:48:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:17,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1111 [2022-07-22 23:48:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:17,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1119 [2022-07-22 23:48:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1130 [2022-07-22 23:48:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 130857 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130857 trivial. 0 not checked. [2022-07-22 23:48:17,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:48:17,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301948272] [2022-07-22 23:48:17,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301948272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:48:17,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:48:17,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 23:48:17,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414480438] [2022-07-22 23:48:17,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:48:17,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:48:17,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:48:17,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:48:17,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:48:17,951 INFO L87 Difference]: Start difference. First operand 3676 states and 4633 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (12), 7 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:48:18,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:48:18,624 INFO L93 Difference]: Finished difference Result 7357 states and 9290 transitions. [2022-07-22 23:48:18,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:48:18,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (12), 7 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 1158 [2022-07-22 23:48:18,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:48:18,634 INFO L225 Difference]: With dead ends: 7357 [2022-07-22 23:48:18,634 INFO L226 Difference]: Without dead ends: 3699 [2022-07-22 23:48:18,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:48:18,641 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 79 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:48:18,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 757 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 23:48:18,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2022-07-22 23:48:19,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 3677. [2022-07-22 23:48:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3572 states have (on average 1.2527995520716686) internal successors, (4475), 3572 states have internal predecessors, (4475), 69 states have call successors, (69), 27 states have call predecessors, (69), 35 states have return successors, (90), 77 states have call predecessors, (90), 68 states have call successors, (90) [2022-07-22 23:48:19,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 4634 transitions. [2022-07-22 23:48:19,045 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 4634 transitions. Word has length 1158 [2022-07-22 23:48:19,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:48:19,046 INFO L495 AbstractCegarLoop]: Abstraction has 3677 states and 4634 transitions. [2022-07-22 23:48:19,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (12), 7 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:48:19,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 4634 transitions. [2022-07-22 23:48:19,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1160 [2022-07-22 23:48:19,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:48:19,060 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 256, 4, 4, 3, 3, 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] [2022-07-22 23:48:19,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 23:48:19,060 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:48:19,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:48:19,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1778210598, now seen corresponding path program 1 times [2022-07-22 23:48:19,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:48:19,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510492546] [2022-07-22 23:48:19,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:48:19,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:48:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:44,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:48:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:44,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1049 [2022-07-22 23:48:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:44,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1055 [2022-07-22 23:48:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:44,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1070 [2022-07-22 23:48:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:44,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1077 [2022-07-22 23:48:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:44,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:44,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:48:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:44,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1101 [2022-07-22 23:48:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:44,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1112 [2022-07-22 23:48:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:44,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1120 [2022-07-22 23:48:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:44,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1131 [2022-07-22 23:48:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 130858 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 130850 trivial. 0 not checked. [2022-07-22 23:48:44,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:48:44,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510492546] [2022-07-22 23:48:44,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510492546] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:48:44,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526374282] [2022-07-22 23:48:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:48:44,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:48:44,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:48:44,515 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:48:44,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process