./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.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 e6823a3e354b35bf05bec5e81d72dc7306859bf56793457624e681693cebdf0b --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:56:25,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:56:25,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:56:25,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:56:25,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:56:25,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:56:25,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:56:25,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:56:25,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:56:25,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:56:25,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:56:25,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:56:25,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:56:25,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:56:25,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:56:25,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:56:25,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:56:25,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:56:25,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:56:25,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:56:25,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:56:25,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:56:25,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:56:25,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:56:25,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:56:25,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:56:25,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:56:25,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:56:25,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:56:25,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:56:25,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:56:25,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:56:25,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:56:25,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:56:25,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:56:25,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:56:25,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:56:25,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:56:25,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:56:25,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:56:25,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:56:25,114 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:56:25,127 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:56:25,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:56:25,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:56:25,128 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:56:25,128 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:56:25,129 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:56:25,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:56:25,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:56:25,130 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:56:25,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:56:25,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:56:25,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:56:25,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:56:25,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:56:25,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:56:25,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:56:25,132 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:56:25,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:56:25,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:56:25,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:56:25,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:56:25,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:56:25,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:56:25,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:56:25,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:56:25,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:56:25,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:56:25,133 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:56:25,134 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:56:25,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:56:25,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:56:25,134 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6823a3e354b35bf05bec5e81d72dc7306859bf56793457624e681693cebdf0b [2021-12-14 17:56:25,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:56:25,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:56:25,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:56:25,330 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:56:25,331 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:56:25,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2021-12-14 17:56:25,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9d2c934f/f4cc4bc5bef6499ca06b9c986dd61d44/FLAG17b7fd813 [2021-12-14 17:56:25,932 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:56:25,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2021-12-14 17:56:25,961 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9d2c934f/f4cc4bc5bef6499ca06b9c986dd61d44/FLAG17b7fd813 [2021-12-14 17:56:26,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9d2c934f/f4cc4bc5bef6499ca06b9c986dd61d44 [2021-12-14 17:56:26,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:56:26,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:56:26,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:56:26,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:56:26,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:56:26,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:56:26" (1/1) ... [2021-12-14 17:56:26,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ca41b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:56:26, skipping insertion in model container [2021-12-14 17:56:26,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:56:26" (1/1) ... [2021-12-14 17:56:26,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:56:26,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:56:26,989 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i[225078,225091] [2021-12-14 17:56:27,008 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-12-14 17:56:27,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:56:27,045 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:56:27,249 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i[225078,225091] [2021-12-14 17:56:27,256 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-12-14 17:56:27,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:56:27,302 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:56:27,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:56:27 WrapperNode [2021-12-14 17:56:27,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:56:27,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:56:27,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:56:27,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:56:27,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:56:27" (1/1) ... [2021-12-14 17:56:27,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:56:27" (1/1) ... [2021-12-14 17:56:27,432 INFO L137 Inliner]: procedures = 141, calls = 1103, calls flagged for inlining = 57, calls inlined = 55, statements flattened = 2436 [2021-12-14 17:56:27,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:56:27,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:56:27,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:56:27,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:56:27,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:56:27" (1/1) ... [2021-12-14 17:56:27,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:56:27" (1/1) ... [2021-12-14 17:56:27,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:56:27" (1/1) ... [2021-12-14 17:56:27,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:56:27" (1/1) ... [2021-12-14 17:56:27,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:56:27" (1/1) ... [2021-12-14 17:56:27,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:56:27" (1/1) ... [2021-12-14 17:56:27,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:56:27" (1/1) ... [2021-12-14 17:56:27,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:56:27,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:56:27,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:56:27,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:56:27,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:56:27" (1/1) ... [2021-12-14 17:56:27,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:56:27,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:56:27,623 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) [2021-12-14 17:56:27,629 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 [2021-12-14 17:56:27,651 INFO L130 BoogieDeclarations]: Found specification of procedure atm_sk [2021-12-14 17:56:27,651 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_sk [2021-12-14 17:56:27,651 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2021-12-14 17:56:27,652 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2021-12-14 17:56:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:56:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure change_bit [2021-12-14 17:56:27,652 INFO L138 BoogieDeclarations]: Found implementation of procedure change_bit [2021-12-14 17:56:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure atm_alloc_charge [2021-12-14 17:56:27,652 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_alloc_charge [2021-12-14 17:56:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-14 17:56:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:56:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:56:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 17:56:27,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 17:56:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:56:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 17:56:27,653 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 17:56:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-12-14 17:56:27,654 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-12-14 17:56:27,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:56:27,654 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:56:27,654 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-14 17:56:27,654 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-14 17:56:27,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:56:27,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:56:27,654 INFO L130 BoogieDeclarations]: Found specification of procedure sk_sleep [2021-12-14 17:56:27,655 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_sleep [2021-12-14 17:56:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-12-14 17:56:27,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-12-14 17:56:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_ioctl [2021-12-14 17:56:27,655 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_ioctl [2021-12-14 17:56:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:56:27,655 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:56:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:56:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:56:27,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:56:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:56:27,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:56:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-14 17:56:27,656 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-14 17:56:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 17:56:27,656 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 17:56:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_dev_close [2021-12-14 17:56:27,657 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_dev_close [2021-12-14 17:56:27,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 17:56:27,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 17:56:27,657 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:56:27,657 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:56:27,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:56:27,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-14 17:56:27,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-14 17:56:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure sk_atm [2021-12-14 17:56:27,658 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_atm [2021-12-14 17:56:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:56:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-12-14 17:56:27,658 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-12-14 17:56:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_c_send [2021-12-14 17:56:27,658 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_c_send [2021-12-14 17:56:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-14 17:56:27,658 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-14 17:56:27,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:56:27,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:56:27,659 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 17:56:27,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:56:27,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-14 17:56:27,659 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_create [2021-12-14 17:56:27,659 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_create [2021-12-14 17:56:27,659 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_c_close [2021-12-14 17:56:27,660 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_c_close [2021-12-14 17:56:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_deregister [2021-12-14 17:56:27,660 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_deregister [2021-12-14 17:56:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:56:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:56:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_close [2021-12-14 17:56:27,660 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_close [2021-12-14 17:56:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-14 17:56:27,661 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-14 17:56:27,661 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_put [2021-12-14 17:56:27,661 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_put [2021-12-14 17:56:27,661 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-14 17:56:27,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-14 17:56:27,661 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_lookup [2021-12-14 17:56:27,661 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_lookup [2021-12-14 17:56:27,661 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-14 17:56:27,661 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-14 17:56:27,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:56:27,662 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_send [2021-12-14 17:56:27,662 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_send [2021-12-14 17:56:27,662 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-14 17:56:27,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-14 17:56:27,662 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_send_control [2021-12-14 17:56:27,662 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_send_control [2021-12-14 17:56:27,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:56:27,663 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock [2021-12-14 17:56:27,663 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock [2021-12-14 17:56:27,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:56:27,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:56:27,663 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock [2021-12-14 17:56:27,663 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock [2021-12-14 17:56:27,988 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:56:27,990 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:56:31,212 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 17:56:38,496 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:56:38,506 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:56:38,507 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:56:38,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:56:38 BoogieIcfgContainer [2021-12-14 17:56:38,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:56:38,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:56:38,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:56:38,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:56:38,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:56:26" (1/3) ... [2021-12-14 17:56:38,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3655952f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:56:38, skipping insertion in model container [2021-12-14 17:56:38,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:56:27" (2/3) ... [2021-12-14 17:56:38,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3655952f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:56:38, skipping insertion in model container [2021-12-14 17:56:38,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:56:38" (3/3) ... [2021-12-14 17:56:38,516 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2021-12-14 17:56:38,519 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:56:38,520 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:56:38,562 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:56:38,566 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:56:38,566 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:56:38,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 628 states, 450 states have (on average 1.3444444444444446) internal successors, (605), 467 states have internal predecessors, (605), 137 states have call successors, (137), 40 states have call predecessors, (137), 39 states have return successors, (132), 129 states have call predecessors, (132), 132 states have call successors, (132) [2021-12-14 17:56:38,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-14 17:56:38,598 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:56:38,599 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:56:38,599 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:56:38,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:56:38,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1856106833, now seen corresponding path program 1 times [2021-12-14 17:56:38,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:56:38,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15486278] [2021-12-14 17:56:38,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:56:38,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:56:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:38,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:56:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:38,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:56:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:56:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:56:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 17:56:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:56:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 17:56:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 17:56:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2021-12-14 17:56:39,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:56:39,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15486278] [2021-12-14 17:56:39,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15486278] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:56:39,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:56:39,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:56:39,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913247158] [2021-12-14 17:56:39,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:56:39,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:56:39,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:56:39,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:56:39,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:56:39,289 INFO L87 Difference]: Start difference. First operand has 628 states, 450 states have (on average 1.3444444444444446) internal successors, (605), 467 states have internal predecessors, (605), 137 states have call successors, (137), 40 states have call predecessors, (137), 39 states have return successors, (132), 129 states have call predecessors, (132), 132 states have call successors, (132) Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 17:56:41,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:56:44,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:56:46,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:56:46,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:56:46,910 INFO L93 Difference]: Finished difference Result 1372 states and 1975 transitions. [2021-12-14 17:56:46,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:56:46,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (12), 5 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 133 [2021-12-14 17:56:46,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:56:46,924 INFO L225 Difference]: With dead ends: 1372 [2021-12-14 17:56:46,925 INFO L226 Difference]: Without dead ends: 736 [2021-12-14 17:56:46,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:56:46,935 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 556 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 398 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:56:46,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 1584 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 511 Invalid, 3 Unknown, 0 Unchecked, 7.4s Time] [2021-12-14 17:56:46,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-12-14 17:56:46,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 615. [2021-12-14 17:56:46,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 444 states have (on average 1.3288288288288288) internal successors, (590), 454 states have internal predecessors, (590), 132 states have call successors, (132), 39 states have call predecessors, (132), 38 states have return successors, (130), 127 states have call predecessors, (130), 130 states have call successors, (130) [2021-12-14 17:56:46,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 852 transitions. [2021-12-14 17:56:46,995 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 852 transitions. Word has length 133 [2021-12-14 17:56:47,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:56:47,007 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 852 transitions. [2021-12-14 17:56:47,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 17:56:47,008 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 852 transitions. [2021-12-14 17:56:47,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-14 17:56:47,017 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:56:47,017 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:56:47,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:56:47,018 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:56:47,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:56:47,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1666389307, now seen corresponding path program 1 times [2021-12-14 17:56:47,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:56:47,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648969688] [2021-12-14 17:56:47,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:56:47,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:56:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:56:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:56:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:56:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:56:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 17:56:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:56:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 17:56:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 17:56:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:47,316 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2021-12-14 17:56:47,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:56:47,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648969688] [2021-12-14 17:56:47,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648969688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:56:47,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:56:47,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:56:47,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216413233] [2021-12-14 17:56:47,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:56:47,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:56:47,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:56:47,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:56:47,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:56:47,320 INFO L87 Difference]: Start difference. First operand 615 states and 852 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-14 17:56:49,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:56:52,434 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:56:54,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:56:56,472 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:57:00,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:57:02,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:57:04,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:57:05,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:57:05,627 INFO L93 Difference]: Finished difference Result 2011 states and 2837 transitions. [2021-12-14 17:57:05,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:57:05,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 133 [2021-12-14 17:57:05,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:57:05,634 INFO L225 Difference]: With dead ends: 2011 [2021-12-14 17:57:05,635 INFO L226 Difference]: Without dead ends: 1420 [2021-12-14 17:57:05,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:57:05,637 INFO L933 BasicCegarLoop]: 901 mSDtfsCounter, 1572 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 809 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1670 SdHoareTripleChecker+Valid, 2764 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 809 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:57:05,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1670 Valid, 2764 Invalid, 2095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [809 Valid, 1279 Invalid, 7 Unknown, 0 Unchecked, 18.1s Time] [2021-12-14 17:57:05,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-12-14 17:57:05,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1186. [2021-12-14 17:57:05,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 860 states have (on average 1.3325581395348838) internal successors, (1146), 879 states have internal predecessors, (1146), 250 states have call successors, (250), 75 states have call predecessors, (250), 75 states have return successors, (252), 243 states have call predecessors, (252), 248 states have call successors, (252) [2021-12-14 17:57:05,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1648 transitions. [2021-12-14 17:57:05,683 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1648 transitions. Word has length 133 [2021-12-14 17:57:05,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:57:05,684 INFO L470 AbstractCegarLoop]: Abstraction has 1186 states and 1648 transitions. [2021-12-14 17:57:05,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-14 17:57:05,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1648 transitions. [2021-12-14 17:57:05,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-14 17:57:05,686 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:57:05,686 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:57:05,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:57:05,686 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:57:05,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:57:05,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1873060620, now seen corresponding path program 1 times [2021-12-14 17:57:05,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:57:05,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145804248] [2021-12-14 17:57:05,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:57:05,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:57:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:57:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:57:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:57:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:57:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:57:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:57:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:57:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:57:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 17:57:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:57:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:57:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:57:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 17:57:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 17:57:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:05,971 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2021-12-14 17:57:05,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:57:05,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145804248] [2021-12-14 17:57:05,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145804248] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:57:05,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:57:05,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:57:05,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507886688] [2021-12-14 17:57:05,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:57:05,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:57:05,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:57:05,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:57:05,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:57:05,976 INFO L87 Difference]: Start difference. First operand 1186 states and 1648 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-14 17:57:08,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:57:11,027 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:57:13,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:57:17,074 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:57:19,283 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:57:21,295 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:57:21,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:57:21,780 INFO L93 Difference]: Finished difference Result 2623 states and 3679 transitions. [2021-12-14 17:57:21,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:57:21,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 136 [2021-12-14 17:57:21,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:57:21,787 INFO L225 Difference]: With dead ends: 2623 [2021-12-14 17:57:21,787 INFO L226 Difference]: Without dead ends: 1461 [2021-12-14 17:57:21,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:57:21,791 INFO L933 BasicCegarLoop]: 1010 mSDtfsCounter, 1415 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 580 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 3357 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:57:21,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 3357 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [580 Valid, 1182 Invalid, 6 Unknown, 0 Unchecked, 15.6s Time] [2021-12-14 17:57:21,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-12-14 17:57:21,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1212. [2021-12-14 17:57:21,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 880 states have (on average 1.3295454545454546) internal successors, (1170), 899 states have internal predecessors, (1170), 251 states have call successors, (251), 80 states have call predecessors, (251), 80 states have return successors, (253), 244 states have call predecessors, (253), 249 states have call successors, (253) [2021-12-14 17:57:21,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1674 transitions. [2021-12-14 17:57:21,830 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1674 transitions. Word has length 136 [2021-12-14 17:57:21,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:57:21,831 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 1674 transitions. [2021-12-14 17:57:21,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-14 17:57:21,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1674 transitions. [2021-12-14 17:57:21,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-14 17:57:21,833 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:57:21,833 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:57:21,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:57:21,833 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:57:21,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:57:21,834 INFO L85 PathProgramCache]: Analyzing trace with hash -764946523, now seen corresponding path program 1 times [2021-12-14 17:57:21,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:57:21,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023734162] [2021-12-14 17:57:21,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:57:21,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:57:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:21,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:57:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:57:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:57:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:57:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:57:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:57:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:57:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:57:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 17:57:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:57:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:57:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:57:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 17:57:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 17:57:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-12-14 17:57:22,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:57:22,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023734162] [2021-12-14 17:57:22,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023734162] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:57:22,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:57:22,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:57:22,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537838250] [2021-12-14 17:57:22,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:57:22,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:57:22,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:57:22,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:57:22,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:57:22,195 INFO L87 Difference]: Start difference. First operand 1212 states and 1674 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 17:57:24,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:57:27,284 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:57:29,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:57:33,391 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:57:35,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:57:35,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:57:35,998 INFO L93 Difference]: Finished difference Result 4018 states and 5662 transitions. [2021-12-14 17:57:35,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:57:35,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (12), 5 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 144 [2021-12-14 17:57:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:57:36,012 INFO L225 Difference]: With dead ends: 4018 [2021-12-14 17:57:36,012 INFO L226 Difference]: Without dead ends: 2826 [2021-12-14 17:57:36,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:57:36,019 INFO L933 BasicCegarLoop]: 911 mSDtfsCounter, 1576 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 811 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1670 SdHoareTripleChecker+Valid, 2437 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 811 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:57:36,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1670 Valid, 2437 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [811 Valid, 973 Invalid, 5 Unknown, 0 Unchecked, 13.5s Time] [2021-12-14 17:57:36,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2021-12-14 17:57:36,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2337. [2021-12-14 17:57:36,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2337 states, 1701 states have (on average 1.332745443856555) internal successors, (2267), 1734 states have internal predecessors, (2267), 483 states have call successors, (483), 152 states have call predecessors, (483), 152 states have return successors, (489), 472 states have call predecessors, (489), 481 states have call successors, (489) [2021-12-14 17:57:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 3239 transitions. [2021-12-14 17:57:36,102 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 3239 transitions. Word has length 144 [2021-12-14 17:57:36,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:57:36,103 INFO L470 AbstractCegarLoop]: Abstraction has 2337 states and 3239 transitions. [2021-12-14 17:57:36,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 17:57:36,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 3239 transitions. [2021-12-14 17:57:36,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-14 17:57:36,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:57:36,106 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:57:36,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:57:36,107 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:57:36,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:57:36,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1630948905, now seen corresponding path program 1 times [2021-12-14 17:57:36,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:57:36,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131418167] [2021-12-14 17:57:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:57:36,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:57:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:57:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:57:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:57:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:57:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:57:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:57:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:57:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:57:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 17:57:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:57:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:57:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:57:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 17:57:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 17:57:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:57:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 17:57:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 17:57:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:57:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2021-12-14 17:57:36,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:57:36,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131418167] [2021-12-14 17:57:36,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131418167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:57:36,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:57:36,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:57:36,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377825320] [2021-12-14 17:57:36,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:57:36,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:57:36,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:57:36,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:57:36,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:57:36,431 INFO L87 Difference]: Start difference. First operand 2337 states and 3239 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13)