./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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-43_2a-drivers--tty--n_r3964.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 91e04004830698389104523fd95ec19013bffc6ed609cfb90049e6e93edb2bb3 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 09:20:57,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 09:20:57,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 09:20:57,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 09:20:57,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 09:20:57,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 09:20:57,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 09:20:57,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 09:20:57,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 09:20:57,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 09:20:57,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 09:20:57,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 09:20:57,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 09:20:57,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 09:20:57,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 09:20:57,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 09:20:57,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 09:20:57,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 09:20:57,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 09:20:57,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 09:20:57,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 09:20:57,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 09:20:57,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 09:20:57,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 09:20:57,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 09:20:57,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 09:20:57,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 09:20:57,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 09:20:57,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 09:20:57,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 09:20:57,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 09:20:57,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 09:20:57,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 09:20:57,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 09:20:57,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 09:20:57,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 09:20:57,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 09:20:57,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 09:20:57,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 09:20:57,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 09:20:57,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 09:20:57,116 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 09:20:57,130 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 09:20:57,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 09:20:57,130 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 09:20:57,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 09:20:57,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 09:20:57,131 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 09:20:57,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 09:20:57,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 09:20:57,132 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 09:20:57,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 09:20:57,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 09:20:57,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 09:20:57,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 09:20:57,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 09:20:57,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 09:20:57,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 09:20:57,134 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 09:20:57,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 09:20:57,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 09:20:57,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 09:20:57,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 09:20:57,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 09:20:57,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 09:20:57,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 09:20:57,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 09:20:57,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 09:20:57,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 09:20:57,139 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 09:20:57,139 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 09:20:57,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 09:20:57,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 09:20:57,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91e04004830698389104523fd95ec19013bffc6ed609cfb90049e6e93edb2bb3 [2021-12-18 09:20:57,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 09:20:57,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 09:20:57,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 09:20:57,462 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 09:20:57,463 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 09:20:57,464 INFO L432 ainManager$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-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2021-12-18 09:20:57,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a10be2d8/303d3ecb628c4e749221b50d570085bc/FLAGe6a25db57 [2021-12-18 09:20:58,021 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 09:20:58,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2021-12-18 09:20:58,055 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a10be2d8/303d3ecb628c4e749221b50d570085bc/FLAGe6a25db57 [2021-12-18 09:20:58,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a10be2d8/303d3ecb628c4e749221b50d570085bc [2021-12-18 09:20:58,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 09:20:58,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 09:20:58,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 09:20:58,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 09:20:58,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 09:20:58,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:20:58" (1/1) ... [2021-12-18 09:20:58,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b357d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:58, skipping insertion in model container [2021-12-18 09:20:58,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:20:58" (1/1) ... [2021-12-18 09:20:58,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 09:20:58,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 09:20:59,045 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-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i[143316,143329] [2021-12-18 09:20:59,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 09:20:59,102 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 09:20:59,264 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-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i[143316,143329] [2021-12-18 09:20:59,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 09:20:59,315 INFO L208 MainTranslator]: Completed translation [2021-12-18 09:20:59,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:59 WrapperNode [2021-12-18 09:20:59,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 09:20:59,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 09:20:59,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 09:20:59,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 09:20:59,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:59" (1/1) ... [2021-12-18 09:20:59,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:59" (1/1) ... [2021-12-18 09:20:59,496 INFO L137 Inliner]: procedures = 142, calls = 664, calls flagged for inlining = 62, calls inlined = 59, statements flattened = 1981 [2021-12-18 09:20:59,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 09:20:59,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 09:20:59,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 09:20:59,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 09:20:59,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:59" (1/1) ... [2021-12-18 09:20:59,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:59" (1/1) ... [2021-12-18 09:20:59,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:59" (1/1) ... [2021-12-18 09:20:59,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:59" (1/1) ... [2021-12-18 09:20:59,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:59" (1/1) ... [2021-12-18 09:20:59,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:59" (1/1) ... [2021-12-18 09:20:59,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:59" (1/1) ... [2021-12-18 09:20:59,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 09:20:59,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 09:20:59,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 09:20:59,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 09:20:59,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:59" (1/1) ... [2021-12-18 09:20:59,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 09:20:59,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 09:20:59,647 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) [2021-12-18 09:20:59,676 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 [2021-12-18 09:20:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-18 09:20:59,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-18 09:20:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 09:20:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2021-12-18 09:20:59,688 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2021-12-18 09:20:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 09:20:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 09:20:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 09:20:59,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 09:20:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 09:20:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-18 09:20:59,688 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-18 09:20:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-18 09:20:59,689 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-18 09:20:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure retry_transmit [2021-12-18 09:20:59,689 INFO L138 BoogieDeclarations]: Found implementation of procedure retry_transmit [2021-12-18 09:20:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 09:20:59,690 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 09:20:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-18 09:20:59,690 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-18 09:20:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-18 09:20:59,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-18 09:20:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 09:20:59,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 09:20:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_close [2021-12-18 09:20:59,691 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_close [2021-12-18 09:20:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure remove_msg [2021-12-18 09:20:59,691 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_msg [2021-12-18 09:20:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2021-12-18 09:20:59,691 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2021-12-18 09:20:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure task_pid [2021-12-18 09:20:59,692 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pid [2021-12-18 09:20:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 09:20:59,692 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 09:20:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unlock [2021-12-18 09:20:59,692 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unlock [2021-12-18 09:20:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 09:20:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-18 09:20:59,693 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-18 09:20:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 09:20:59,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 09:20:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-18 09:20:59,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-18 09:20:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 09:20:59,693 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 09:20:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure add_msg [2021-12-18 09:20:59,693 INFO L138 BoogieDeclarations]: Found implementation of procedure add_msg [2021-12-18 09:20:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 09:20:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-12-18 09:20:59,694 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-12-18 09:20:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-18 09:20:59,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-18 09:20:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-18 09:20:59,695 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-18 09:20:59,695 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_poll [2021-12-18 09:20:59,695 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_poll [2021-12-18 09:20:59,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 09:20:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2021-12-18 09:20:59,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2021-12-18 09:20:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 09:20:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 09:20:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-18 09:20:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure findClient [2021-12-18 09:20:59,697 INFO L138 BoogieDeclarations]: Found implementation of procedure findClient [2021-12-18 09:20:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure put_char [2021-12-18 09:20:59,697 INFO L138 BoogieDeclarations]: Found implementation of procedure put_char [2021-12-18 09:20:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 09:20:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-18 09:20:59,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-18 09:20:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2021-12-18 09:20:59,698 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2021-12-18 09:20:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-18 09:20:59,698 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-18 09:20:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure remove_client_block [2021-12-18 09:20:59,698 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_client_block [2021-12-18 09:20:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 09:20:59,698 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 09:20:59,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 09:20:59,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 09:20:59,699 INFO L130 BoogieDeclarations]: Found specification of procedure on_receive_block [2021-12-18 09:20:59,699 INFO L138 BoogieDeclarations]: Found implementation of procedure on_receive_block [2021-12-18 09:20:59,699 INFO L130 BoogieDeclarations]: Found specification of procedure flush [2021-12-18 09:20:59,699 INFO L138 BoogieDeclarations]: Found implementation of procedure flush [2021-12-18 09:20:59,699 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_set_termios [2021-12-18 09:20:59,700 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_set_termios [2021-12-18 09:20:59,700 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 09:20:59,700 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 09:20:59,700 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_ioctl [2021-12-18 09:20:59,700 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_ioctl [2021-12-18 09:20:59,701 INFO L130 BoogieDeclarations]: Found specification of procedure remove_from_tx_queue [2021-12-18 09:20:59,701 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_from_tx_queue [2021-12-18 09:20:59,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 09:20:59,701 INFO L130 BoogieDeclarations]: Found specification of procedure tty_lock [2021-12-18 09:20:59,701 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_lock [2021-12-18 09:20:59,702 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_transmit [2021-12-18 09:20:59,702 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_transmit [2021-12-18 09:20:59,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 09:20:59,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 09:20:59,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 09:21:00,100 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 09:21:00,101 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 09:21:00,257 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 09:21:03,317 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 09:21:03,327 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 09:21:03,330 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 09:21:03,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:21:03 BoogieIcfgContainer [2021-12-18 09:21:03,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 09:21:03,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 09:21:03,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 09:21:03,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 09:21:03,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 09:20:58" (1/3) ... [2021-12-18 09:21:03,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d24884a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 09:21:03, skipping insertion in model container [2021-12-18 09:21:03,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:59" (2/3) ... [2021-12-18 09:21:03,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d24884a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 09:21:03, skipping insertion in model container [2021-12-18 09:21:03,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:21:03" (3/3) ... [2021-12-18 09:21:03,341 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2021-12-18 09:21:03,345 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 09:21:03,345 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 09:21:03,389 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 09:21:03,394 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 [2021-12-18 09:21:03,394 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 09:21:03,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 750 states, 523 states have (on average 1.3919694072657744) internal successors, (728), 559 states have internal predecessors, (728), 185 states have call successors, (185), 41 states have call predecessors, (185), 40 states have return successors, (181), 171 states have call predecessors, (181), 181 states have call successors, (181) [2021-12-18 09:21:03,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-18 09:21:03,426 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:21:03,427 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:21:03,428 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:21:03,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:21:03,431 INFO L85 PathProgramCache]: Analyzing trace with hash -842815461, now seen corresponding path program 1 times [2021-12-18 09:21:03,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:21:03,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172707441] [2021-12-18 09:21:03,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:21:03,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:21:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:21:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:21:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 09:21:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 09:21:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 09:21:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 09:21:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:21:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 09:21:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 09:21:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 09:21:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 09:21:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 09:21:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 09:21:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 09:21:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-18 09:21:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:03,977 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-18 09:21:03,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:21:03,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172707441] [2021-12-18 09:21:03,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172707441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:21:03,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 09:21:03,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 09:21:03,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631003929] [2021-12-18 09:21:03,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:21:03,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 09:21:03,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:21:04,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 09:21:04,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-18 09:21:04,004 INFO L87 Difference]: Start difference. First operand has 750 states, 523 states have (on average 1.3919694072657744) internal successors, (728), 559 states have internal predecessors, (728), 185 states have call successors, (185), 41 states have call predecessors, (185), 40 states have return successors, (181), 171 states have call predecessors, (181), 181 states have call successors, (181) Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-18 09:21:08,291 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 [] [2021-12-18 09:21:10,316 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 [] [2021-12-18 09:21:10,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:21:10,802 INFO L93 Difference]: Finished difference Result 2113 states and 3220 transitions. [2021-12-18 09:21:10,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 09:21:10,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 173 [2021-12-18 09:21:10,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:21:10,845 INFO L225 Difference]: With dead ends: 2113 [2021-12-18 09:21:10,846 INFO L226 Difference]: Without dead ends: 1341 [2021-12-18 09:21:10,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-18 09:21:10,864 INFO L933 BasicCegarLoop]: 1083 mSDtfsCounter, 1687 mSDsluCounter, 1975 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 1357 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1773 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 3213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1357 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-18 09:21:10,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1773 Valid, 3058 Invalid, 3213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1357 Valid, 1854 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2021-12-18 09:21:10,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-12-18 09:21:10,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1020. [2021-12-18 09:21:10,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 710 states have (on average 1.3816901408450704) internal successors, (981), 757 states have internal predecessors, (981), 245 states have call successors, (245), 65 states have call predecessors, (245), 64 states have return successors, (244), 229 states have call predecessors, (244), 244 states have call successors, (244) [2021-12-18 09:21:11,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1470 transitions. [2021-12-18 09:21:11,005 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1470 transitions. Word has length 173 [2021-12-18 09:21:11,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:21:11,006 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 1470 transitions. [2021-12-18 09:21:11,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-18 09:21:11,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1470 transitions. [2021-12-18 09:21:11,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-18 09:21:11,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:21:11,010 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:21:11,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 09:21:11,011 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:21:11,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:21:11,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1799726521, now seen corresponding path program 1 times [2021-12-18 09:21:11,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:21:11,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16603261] [2021-12-18 09:21:11,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:21:11,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:21:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:21:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:21:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 09:21:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 09:21:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 09:21:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 09:21:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:21:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 09:21:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 09:21:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 09:21:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 09:21:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 09:21:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 09:21:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 09:21:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-18 09:21:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:11,262 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-18 09:21:11,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:21:11,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16603261] [2021-12-18 09:21:11,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16603261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:21:11,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 09:21:11,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 09:21:11,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22444814] [2021-12-18 09:21:11,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:21:11,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 09:21:11,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:21:11,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 09:21:11,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-18 09:21:11,265 INFO L87 Difference]: Start difference. First operand 1020 states and 1470 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-18 09:21:17,866 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 09:21:18,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:21:18,988 INFO L93 Difference]: Finished difference Result 6130 states and 9736 transitions. [2021-12-18 09:21:18,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 09:21:18,989 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 184 [2021-12-18 09:21:18,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:21:19,016 INFO L225 Difference]: With dead ends: 6130 [2021-12-18 09:21:19,017 INFO L226 Difference]: Without dead ends: 5159 [2021-12-18 09:21:19,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-12-18 09:21:19,026 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 5914 mSDsluCounter, 3709 mSDsCounter, 0 mSdLazyCounter, 4282 mSolverCounterSat, 3983 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6253 SdHoareTripleChecker+Valid, 5273 SdHoareTripleChecker+Invalid, 8266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3983 IncrementalHoareTripleChecker+Valid, 4282 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-12-18 09:21:19,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6253 Valid, 5273 Invalid, 8266 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3983 Valid, 4282 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-12-18 09:21:19,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5159 states. [2021-12-18 09:21:19,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5159 to 3961. [2021-12-18 09:21:19,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3961 states, 2770 states have (on average 1.38014440433213) internal successors, (3823), 2951 states have internal predecessors, (3823), 929 states have call successors, (929), 246 states have call predecessors, (929), 261 states have return successors, (1209), 887 states have call predecessors, (1209), 928 states have call successors, (1209) [2021-12-18 09:21:19,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3961 states to 3961 states and 5961 transitions. [2021-12-18 09:21:19,202 INFO L78 Accepts]: Start accepts. Automaton has 3961 states and 5961 transitions. Word has length 184 [2021-12-18 09:21:19,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:21:19,203 INFO L470 AbstractCegarLoop]: Abstraction has 3961 states and 5961 transitions. [2021-12-18 09:21:19,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-18 09:21:19,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3961 states and 5961 transitions. [2021-12-18 09:21:19,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-18 09:21:19,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:21:19,207 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:21:19,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 09:21:19,207 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:21:19,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:21:19,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2071293813, now seen corresponding path program 1 times [2021-12-18 09:21:19,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:21:19,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972708586] [2021-12-18 09:21:19,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:21:19,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:21:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:21:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:21:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 09:21:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 09:21:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 09:21:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 09:21:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:21:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 09:21:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 09:21:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 09:21:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 09:21:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 09:21:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 09:21:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 09:21:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-18 09:21:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:19,459 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-18 09:21:19,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:21:19,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972708586] [2021-12-18 09:21:19,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972708586] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:21:19,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 09:21:19,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 09:21:19,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97593333] [2021-12-18 09:21:19,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:21:19,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 09:21:19,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:21:19,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 09:21:19,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-18 09:21:19,463 INFO L87 Difference]: Start difference. First operand 3961 states and 5961 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-18 09:21:26,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 09:21:28,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 09:21:31,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 09:21:33,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 09:21:34,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:21:34,148 INFO L93 Difference]: Finished difference Result 24261 states and 40750 transitions. [2021-12-18 09:21:34,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 09:21:34,149 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 185 [2021-12-18 09:21:34,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:21:34,268 INFO L225 Difference]: With dead ends: 24261 [2021-12-18 09:21:34,269 INFO L226 Difference]: Without dead ends: 20349 [2021-12-18 09:21:34,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-12-18 09:21:34,300 INFO L933 BasicCegarLoop]: 1466 mSDtfsCounter, 5452 mSDsluCounter, 4215 mSDsCounter, 0 mSdLazyCounter, 5539 mSolverCounterSat, 3417 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5796 SdHoareTripleChecker+Valid, 5681 SdHoareTripleChecker+Invalid, 8960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3417 IncrementalHoareTripleChecker+Valid, 5539 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2021-12-18 09:21:34,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5796 Valid, 5681 Invalid, 8960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3417 Valid, 5539 Invalid, 4 Unknown, 0 Unchecked, 13.9s Time] [2021-12-18 09:21:34,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20349 states. [2021-12-18 09:21:35,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20349 to 15898. [2021-12-18 09:21:35,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15898 states, 11121 states have (on average 1.372988040643827) internal successors, (15269), 11823 states have internal predecessors, (15269), 3695 states have call successors, (3695), 972 states have call predecessors, (3695), 1081 states have return successors, (6352), 3592 states have call predecessors, (6352), 3694 states have call successors, (6352) [2021-12-18 09:21:35,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15898 states to 15898 states and 25316 transitions. [2021-12-18 09:21:35,151 INFO L78 Accepts]: Start accepts. Automaton has 15898 states and 25316 transitions. Word has length 185 [2021-12-18 09:21:35,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:21:35,152 INFO L470 AbstractCegarLoop]: Abstraction has 15898 states and 25316 transitions. [2021-12-18 09:21:35,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-18 09:21:35,153 INFO L276 IsEmpty]: Start isEmpty. Operand 15898 states and 25316 transitions. [2021-12-18 09:21:35,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-18 09:21:35,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:21:35,155 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:21:35,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 09:21:35,156 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:21:35,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:21:35,156 INFO L85 PathProgramCache]: Analyzing trace with hash -517979199, now seen corresponding path program 1 times [2021-12-18 09:21:35,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:21:35,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381974390] [2021-12-18 09:21:35,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:21:35,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:21:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:21:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:21:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 09:21:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 09:21:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 09:21:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 09:21:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:21:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 09:21:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 09:21:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:21:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:21:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 09:21:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 09:21:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 09:21:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 09:21:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 09:21:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-18 09:21:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:21:35,351 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-18 09:21:35,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:21:35,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381974390] [2021-12-18 09:21:35,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381974390] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:21:35,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 09:21:35,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 09:21:35,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48287634] [2021-12-18 09:21:35,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:21:35,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 09:21:35,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:21:35,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 09:21:35,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-18 09:21:35,353 INFO L87 Difference]: Start difference. First operand 15898 states and 25316 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-18 09:21:43,032 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 09:21:45,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 09:21:48,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 09:21:50,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 09:21:52,195 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 09:21:54,238 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 09:21:55,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:21:55,118 INFO L93 Difference]: Finished difference Result 96882 states and 173609 transitions. [2021-12-18 09:21:55,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 09:21:55,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 186 [2021-12-18 09:21:55,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:21:56,005 INFO L225 Difference]: With dead ends: 96882 [2021-12-18 09:21:56,005 INFO L226 Difference]: Without dead ends: 81033 [2021-12-18 09:21:56,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-12-18 09:21:56,114 INFO L933 BasicCegarLoop]: 1460 mSDtfsCounter, 5455 mSDsluCounter, 4210 mSDsCounter, 0 mSdLazyCounter, 5175 mSolverCounterSat, 3448 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5796 SdHoareTripleChecker+Valid, 5670 SdHoareTripleChecker+Invalid, 8629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3448 IncrementalHoareTripleChecker+Valid, 5175 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2021-12-18 09:21:56,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5796 Valid, 5670 Invalid, 8629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3448 Valid, 5175 Invalid, 6 Unknown, 0 Unchecked, 17.5s Time] [2021-12-18 09:21:56,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81033 states. [2021-12-18 09:21:59,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81033 to 64226. [2021-12-18 09:21:59,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64226 states, 44924 states have (on average 1.3657955658445375) internal successors, (61357), 47652 states have internal predecessors, (61357), 14832 states have call successors, (14832), 3876 states have call predecessors, (14832), 4469 states have return successors, (33531), 14653 states have call predecessors, (33531), 14831 states have call successors, (33531) [2021-12-18 09:21:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64226 states to 64226 states and 109720 transitions. [2021-12-18 09:21:59,779 INFO L78 Accepts]: Start accepts. Automaton has 64226 states and 109720 transitions. Word has length 186 [2021-12-18 09:21:59,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:21:59,780 INFO L470 AbstractCegarLoop]: Abstraction has 64226 states and 109720 transitions. [2021-12-18 09:21:59,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-18 09:21:59,780 INFO L276 IsEmpty]: Start isEmpty. Operand 64226 states and 109720 transitions. [2021-12-18 09:21:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-18 09:21:59,783 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:21:59,783 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:21:59,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 09:21:59,783 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:21:59,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:21:59,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1685994259, now seen corresponding path program 1 times [2021-12-18 09:21:59,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:21:59,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704144424] [2021-12-18 09:21:59,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:21:59,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:21:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:22:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:22:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:22:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:22:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 09:22:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:22:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:22:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 09:22:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:22:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:22:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 09:22:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 09:22:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:22:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:22:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:22:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 09:22:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:22:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:22:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 09:22:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:22:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:22:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 09:22:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 09:22:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 09:22:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 09:22:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 09:22:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-18 09:22:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:00,217 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-18 09:22:00,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:22:00,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704144424] [2021-12-18 09:22:00,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704144424] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:22:00,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 09:22:00,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 09:22:00,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691310638] [2021-12-18 09:22:00,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:22:00,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 09:22:00,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:22:00,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 09:22:00,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-18 09:22:00,220 INFO L87 Difference]: Start difference. First operand 64226 states and 109720 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-18 09:22:12,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 09:22:19,416 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 09:22:20,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 09:22:20,927 INFO L93 Difference]: Finished difference Result 380400 states and 725028 transitions. [2021-12-18 09:22:20,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 09:22:20,928 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 187 [2021-12-18 09:22:20,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 09:22:24,359 INFO L225 Difference]: With dead ends: 380400 [2021-12-18 09:22:24,359 INFO L226 Difference]: Without dead ends: 316223 [2021-12-18 09:22:25,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-12-18 09:22:25,100 INFO L933 BasicCegarLoop]: 1478 mSDtfsCounter, 6291 mSDsluCounter, 3414 mSDsCounter, 0 mSdLazyCounter, 5167 mSolverCounterSat, 4372 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6632 SdHoareTripleChecker+Valid, 4892 SdHoareTripleChecker+Invalid, 9541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4372 IncrementalHoareTripleChecker+Valid, 5167 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-12-18 09:22:25,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6632 Valid, 4892 Invalid, 9541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4372 Valid, 5167 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2021-12-18 09:22:25,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316223 states. [2021-12-18 09:22:37,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316223 to 253706. [2021-12-18 09:22:37,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253706 states, 178232 states have (on average 1.3572871313793258) internal successors, (241912), 188137 states have internal predecessors, (241912), 57400 states have call successors, (57400), 15166 states have call predecessors, (57400), 18073 states have return successors, (166006), 58029 states have call predecessors, (166006), 57399 states have call successors, (166006) [2021-12-18 09:22:40,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253706 states to 253706 states and 465318 transitions. [2021-12-18 09:22:40,640 INFO L78 Accepts]: Start accepts. Automaton has 253706 states and 465318 transitions. Word has length 187 [2021-12-18 09:22:40,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 09:22:40,641 INFO L470 AbstractCegarLoop]: Abstraction has 253706 states and 465318 transitions. [2021-12-18 09:22:40,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-18 09:22:40,642 INFO L276 IsEmpty]: Start isEmpty. Operand 253706 states and 465318 transitions. [2021-12-18 09:22:40,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-18 09:22:40,643 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 09:22:40,644 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 09:22:40,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 09:22:40,644 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 09:22:40,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 09:22:40,644 INFO L85 PathProgramCache]: Analyzing trace with hash -364532315, now seen corresponding path program 1 times [2021-12-18 09:22:40,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 09:22:40,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793730587] [2021-12-18 09:22:40,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 09:22:40,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 09:22:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 09:22:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 09:22:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:22:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:22:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 09:22:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:22:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:22:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 09:22:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:22:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:22:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 09:22:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 09:22:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 09:22:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:22:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:22:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 09:22:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:22:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:22:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 09:22:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:22:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:22:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 09:22:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 09:22:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 09:22:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 09:22:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 09:22:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-18 09:22:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-18 09:22:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 09:22:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 09:22:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 09:22:40,849 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2021-12-18 09:22:40,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 09:22:40,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793730587] [2021-12-18 09:22:40,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793730587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 09:22:40,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 09:22:40,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 09:22:40,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173504056] [2021-12-18 09:22:40,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 09:22:40,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 09:22:40,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 09:22:40,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 09:22:40,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-18 09:22:40,851 INFO L87 Difference]: Start difference. First operand 253706 states and 465318 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18)