./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 18:23:48,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 18:23:48,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 18:23:48,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 18:23:48,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 18:23:48,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 18:23:48,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 18:23:48,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 18:23:48,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 18:23:48,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 18:23:48,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 18:23:48,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 18:23:48,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 18:23:48,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 18:23:48,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 18:23:48,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 18:23:48,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 18:23:48,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 18:23:48,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 18:23:48,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 18:23:48,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 18:23:48,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 18:23:48,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 18:23:48,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 18:23:48,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 18:23:48,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 18:23:48,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 18:23:48,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 18:23:48,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 18:23:48,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 18:23:48,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 18:23:48,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 18:23:48,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 18:23:48,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 18:23:48,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 18:23:48,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 18:23:48,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 18:23:48,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 18:23:48,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 18:23:48,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 18:23:48,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 18:23:48,617 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 18:23:48,641 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 18:23:48,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 18:23:48,642 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 18:23:48,642 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 18:23:48,643 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 18:23:48,643 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 18:23:48,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 18:23:48,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 18:23:48,644 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 18:23:48,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 18:23:48,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 18:23:48,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 18:23:48,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 18:23:48,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 18:23:48,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 18:23:48,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 18:23:48,646 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 18:23:48,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 18:23:48,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 18:23:48,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 18:23:48,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 18:23:48,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:23:48,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 18:23:48,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 18:23:48,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 18:23:48,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 18:23:48,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 18:23:48,647 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 18:23:48,648 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 18:23:48,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 18:23:48,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 18:23:48,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91e04004830698389104523fd95ec19013bffc6ed609cfb90049e6e93edb2bb3 [2021-12-14 18:23:48,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 18:23:48,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 18:23:48,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 18:23:48,881 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 18:23:48,881 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 18:23:48,882 INFO L432 ainManager$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 [2021-12-14 18:23:48,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fcf2be4a/804de76f9e3540c3a418f45122517c6a/FLAG4efc198d8 [2021-12-14 18:23:49,479 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 18:23:49,480 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 [2021-12-14 18:23:49,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fcf2be4a/804de76f9e3540c3a418f45122517c6a/FLAG4efc198d8 [2021-12-14 18:23:49,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fcf2be4a/804de76f9e3540c3a418f45122517c6a [2021-12-14 18:23:49,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 18:23:49,956 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 18:23:49,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 18:23:49,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 18:23:49,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 18:23:49,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:23:49" (1/1) ... [2021-12-14 18:23:49,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@394fe858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:23:49, skipping insertion in model container [2021-12-14 18:23:49,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:23:49" (1/1) ... [2021-12-14 18:23:49,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 18:23:50,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 18:23:50,625 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] [2021-12-14 18:23:50,648 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:23:50,660 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 18:23:50,803 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] [2021-12-14 18:23:50,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:23:50,862 INFO L208 MainTranslator]: Completed translation [2021-12-14 18:23:50,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:23:50 WrapperNode [2021-12-14 18:23:50,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 18:23:50,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 18:23:50,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 18:23:50,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 18:23:50,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:23:50" (1/1) ... [2021-12-14 18:23:50,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:23:50" (1/1) ... [2021-12-14 18:23:50,992 INFO L137 Inliner]: procedures = 142, calls = 664, calls flagged for inlining = 62, calls inlined = 59, statements flattened = 1981 [2021-12-14 18:23:50,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 18:23:50,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 18:23:50,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 18:23:50,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 18:23:51,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:23:50" (1/1) ... [2021-12-14 18:23:51,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:23:50" (1/1) ... [2021-12-14 18:23:51,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:23:50" (1/1) ... [2021-12-14 18:23:51,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:23:50" (1/1) ... [2021-12-14 18:23:51,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:23:50" (1/1) ... [2021-12-14 18:23:51,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:23:50" (1/1) ... [2021-12-14 18:23:51,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:23:50" (1/1) ... [2021-12-14 18:23:51,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 18:23:51,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 18:23:51,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 18:23:51,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 18:23:51,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:23:50" (1/1) ... [2021-12-14 18:23:51,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:23:51,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:23:51,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 18:23:51,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 18:23:51,161 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-14 18:23:51,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-14 18:23:51,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 18:23:51,161 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2021-12-14 18:23:51,161 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2021-12-14 18:23:51,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 18:23:51,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 18:23:51,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 18:23:51,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 18:23:51,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 18:23:51,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 18:23:51,162 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 18:23:51,162 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-14 18:23:51,162 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-14 18:23:51,162 INFO L130 BoogieDeclarations]: Found specification of procedure retry_transmit [2021-12-14 18:23:51,163 INFO L138 BoogieDeclarations]: Found implementation of procedure retry_transmit [2021-12-14 18:23:51,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 18:23:51,163 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 18:23:51,163 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-14 18:23:51,163 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-14 18:23:51,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-14 18:23:51,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-14 18:23:51,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 18:23:51,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 18:23:51,164 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_close [2021-12-14 18:23:51,164 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_close [2021-12-14 18:23:51,164 INFO L130 BoogieDeclarations]: Found specification of procedure remove_msg [2021-12-14 18:23:51,164 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_msg [2021-12-14 18:23:51,164 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2021-12-14 18:23:51,164 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2021-12-14 18:23:51,164 INFO L130 BoogieDeclarations]: Found specification of procedure task_pid [2021-12-14 18:23:51,164 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pid [2021-12-14 18:23:51,164 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 18:23:51,164 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 18:23:51,165 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unlock [2021-12-14 18:23:51,165 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unlock [2021-12-14 18:23:51,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 18:23:51,165 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-14 18:23:51,165 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-14 18:23:51,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 18:23:51,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 18:23:51,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 18:23:51,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 18:23:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 18:23:51,166 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 18:23:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure add_msg [2021-12-14 18:23:51,166 INFO L138 BoogieDeclarations]: Found implementation of procedure add_msg [2021-12-14 18:23:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 18:23:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-12-14 18:23:51,167 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-12-14 18:23:51,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-14 18:23:51,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-14 18:23:51,167 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 18:23:51,167 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 18:23:51,167 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_poll [2021-12-14 18:23:51,167 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_poll [2021-12-14 18:23:51,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 18:23:51,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2021-12-14 18:23:51,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2021-12-14 18:23:51,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 18:23:51,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 18:23:51,170 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 18:23:51,170 INFO L130 BoogieDeclarations]: Found specification of procedure findClient [2021-12-14 18:23:51,170 INFO L138 BoogieDeclarations]: Found implementation of procedure findClient [2021-12-14 18:23:51,170 INFO L130 BoogieDeclarations]: Found specification of procedure put_char [2021-12-14 18:23:51,171 INFO L138 BoogieDeclarations]: Found implementation of procedure put_char [2021-12-14 18:23:51,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 18:23:51,171 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-14 18:23:51,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-14 18:23:51,171 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2021-12-14 18:23:51,171 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2021-12-14 18:23:51,172 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-14 18:23:51,172 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-14 18:23:51,172 INFO L130 BoogieDeclarations]: Found specification of procedure remove_client_block [2021-12-14 18:23:51,172 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_client_block [2021-12-14 18:23:51,172 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 18:23:51,172 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 18:23:51,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 18:23:51,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 18:23:51,172 INFO L130 BoogieDeclarations]: Found specification of procedure on_receive_block [2021-12-14 18:23:51,173 INFO L138 BoogieDeclarations]: Found implementation of procedure on_receive_block [2021-12-14 18:23:51,173 INFO L130 BoogieDeclarations]: Found specification of procedure flush [2021-12-14 18:23:51,173 INFO L138 BoogieDeclarations]: Found implementation of procedure flush [2021-12-14 18:23:51,173 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_set_termios [2021-12-14 18:23:51,173 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_set_termios [2021-12-14 18:23:51,173 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 18:23:51,173 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 18:23:51,173 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_ioctl [2021-12-14 18:23:51,173 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_ioctl [2021-12-14 18:23:51,174 INFO L130 BoogieDeclarations]: Found specification of procedure remove_from_tx_queue [2021-12-14 18:23:51,174 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_from_tx_queue [2021-12-14 18:23:51,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 18:23:51,174 INFO L130 BoogieDeclarations]: Found specification of procedure tty_lock [2021-12-14 18:23:51,175 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_lock [2021-12-14 18:23:51,175 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_transmit [2021-12-14 18:23:51,175 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_transmit [2021-12-14 18:23:51,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 18:23:51,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 18:23:51,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 18:23:51,545 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 18:23:51,548 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 18:23:51,718 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 18:23:54,860 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 18:23:54,876 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 18:23:54,876 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 18:23:54,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:23:54 BoogieIcfgContainer [2021-12-14 18:23:54,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 18:23:54,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 18:23:54,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 18:23:54,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 18:23:54,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:23:49" (1/3) ... [2021-12-14 18:23:54,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a835bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:23:54, skipping insertion in model container [2021-12-14 18:23:54,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:23:50" (2/3) ... [2021-12-14 18:23:54,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a835bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:23:54, skipping insertion in model container [2021-12-14 18:23:54,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:23:54" (3/3) ... [2021-12-14 18:23:54,886 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2021-12-14 18:23:54,889 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 18:23:54,890 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 18:23:54,930 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 18:23:54,936 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 18:23:54,937 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 18:23:54,961 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) [2021-12-14 18:23:54,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-14 18:23:54,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:23:54,976 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] [2021-12-14 18:23:54,976 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:23:54,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:23:54,981 INFO L85 PathProgramCache]: Analyzing trace with hash -842815461, now seen corresponding path program 1 times [2021-12-14 18:23:54,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:23:54,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47733529] [2021-12-14 18:23:54,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:23:54,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:23:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:23:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 18:23:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:23:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:23:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 18:23:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:23:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:23:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 18:23:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:23:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:23:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 18:23:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 18:23:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 18:23:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:23:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:23:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 18:23:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:23:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:23:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 18:23:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:23:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:23:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 18:23:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 18:23:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 18:23:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 18:23:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 18:23:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-14 18:23:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:23:55,593 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-14 18:23:55,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:23:55,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47733529] [2021-12-14 18:23:55,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47733529] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:23:55,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:23:55,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:23:55,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785727557] [2021-12-14 18:23:55,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:23:55,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:23:55,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:23:55,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:23:55,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:23:55,627 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) [2021-12-14 18:24:01,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:24:01,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:24:01,498 INFO L93 Difference]: Finished difference Result 2113 states and 3220 transitions. [2021-12-14 18:24:01,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 18:24:01,499 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 [2021-12-14 18:24:01,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:24:01,516 INFO L225 Difference]: With dead ends: 2113 [2021-12-14 18:24:01,516 INFO L226 Difference]: Without dead ends: 1341 [2021-12-14 18:24:01,523 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 [2021-12-14 18:24:01,525 INFO L933 BasicCegarLoop]: 1082 mSDtfsCounter, 1687 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 1357 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1773 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 3211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1357 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-14 18:24:01,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1773 Valid, 3055 Invalid, 3211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1357 Valid, 1853 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2021-12-14 18:24:01,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-12-14 18:24:01,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1020. [2021-12-14 18:24:01,650 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) [2021-12-14 18:24:01,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1470 transitions. [2021-12-14 18:24:01,657 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1470 transitions. Word has length 173 [2021-12-14 18:24:01,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:24:01,658 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 1470 transitions. [2021-12-14 18:24:01,658 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) [2021-12-14 18:24:01,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1470 transitions. [2021-12-14 18:24:01,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-14 18:24:01,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:24:01,662 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] [2021-12-14 18:24:01,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 18:24:01,663 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:24:01,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:24:01,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1799726521, now seen corresponding path program 1 times [2021-12-14 18:24:01,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:24:01,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167287948] [2021-12-14 18:24:01,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:24:01,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:24:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:24:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 18:24:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 18:24:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 18:24:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 18:24:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 18:24:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 18:24:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 18:24:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 18:24:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 18:24:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 18:24:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 18:24:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 18:24:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 18:24:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-14 18:24:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-14 18:24:01,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:24:01,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167287948] [2021-12-14 18:24:01,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167287948] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:24:01,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:24:01,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:24:01,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010852386] [2021-12-14 18:24:01,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:24:02,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:24:02,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:24:02,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:24:02,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:24:02,001 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) [2021-12-14 18:24:08,626 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 [] [2021-12-14 18:24:09,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:24:09,905 INFO L93 Difference]: Finished difference Result 6130 states and 9736 transitions. [2021-12-14 18:24:09,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 18:24:09,905 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 [2021-12-14 18:24:09,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:24:09,931 INFO L225 Difference]: With dead ends: 6130 [2021-12-14 18:24:09,931 INFO L226 Difference]: Without dead ends: 5159 [2021-12-14 18:24:09,937 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 [2021-12-14 18:24:09,942 INFO L933 BasicCegarLoop]: 1559 mSDtfsCounter, 5916 mSDsluCounter, 3691 mSDsCounter, 0 mSdLazyCounter, 4272 mSolverCounterSat, 4007 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6258 SdHoareTripleChecker+Valid, 5250 SdHoareTripleChecker+Invalid, 8280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4007 IncrementalHoareTripleChecker+Valid, 4272 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-12-14 18:24:09,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6258 Valid, 5250 Invalid, 8280 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4007 Valid, 4272 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-12-14 18:24:09,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5159 states. [2021-12-14 18:24:10,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5159 to 3961. [2021-12-14 18:24:10,108 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) [2021-12-14 18:24:10,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3961 states to 3961 states and 5961 transitions. [2021-12-14 18:24:10,129 INFO L78 Accepts]: Start accepts. Automaton has 3961 states and 5961 transitions. Word has length 184 [2021-12-14 18:24:10,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:24:10,131 INFO L470 AbstractCegarLoop]: Abstraction has 3961 states and 5961 transitions. [2021-12-14 18:24:10,131 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) [2021-12-14 18:24:10,131 INFO L276 IsEmpty]: Start isEmpty. Operand 3961 states and 5961 transitions. [2021-12-14 18:24:10,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-14 18:24:10,137 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:24:10,137 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] [2021-12-14 18:24:10,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 18:24:10,138 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:24:10,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:24:10,138 INFO L85 PathProgramCache]: Analyzing trace with hash -2071293813, now seen corresponding path program 1 times [2021-12-14 18:24:10,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:24:10,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154602502] [2021-12-14 18:24:10,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:24:10,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:24:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:24:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 18:24:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 18:24:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 18:24:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 18:24:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 18:24:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 18:24:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 18:24:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 18:24:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 18:24:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 18:24:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 18:24:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 18:24:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 18:24:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-14 18:24:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:10,366 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-14 18:24:10,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:24:10,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154602502] [2021-12-14 18:24:10,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154602502] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:24:10,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:24:10,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:24:10,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125875558] [2021-12-14 18:24:10,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:24:10,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:24:10,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:24:10,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:24:10,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:24:10,369 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) [2021-12-14 18:24:17,594 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 [] [2021-12-14 18:24:19,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:24:22,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:24:24,639 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 [] [2021-12-14 18:24:25,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:24:25,225 INFO L93 Difference]: Finished difference Result 24261 states and 40750 transitions. [2021-12-14 18:24:25,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 18:24:25,225 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 [2021-12-14 18:24:25,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:24:25,374 INFO L225 Difference]: With dead ends: 24261 [2021-12-14 18:24:25,375 INFO L226 Difference]: Without dead ends: 20349 [2021-12-14 18:24:25,396 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 [2021-12-14 18:24:25,400 INFO L933 BasicCegarLoop]: 1490 mSDtfsCounter, 5392 mSDsluCounter, 4259 mSDsCounter, 0 mSdLazyCounter, 5567 mSolverCounterSat, 3395 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5732 SdHoareTripleChecker+Valid, 5749 SdHoareTripleChecker+Invalid, 8966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3395 IncrementalHoareTripleChecker+Valid, 5567 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2021-12-14 18:24:25,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5732 Valid, 5749 Invalid, 8966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3395 Valid, 5567 Invalid, 4 Unknown, 0 Unchecked, 14.1s Time] [2021-12-14 18:24:25,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20349 states. [2021-12-14 18:24:26,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20349 to 15898. [2021-12-14 18:24:26,042 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) [2021-12-14 18:24:26,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15898 states to 15898 states and 25316 transitions. [2021-12-14 18:24:26,195 INFO L78 Accepts]: Start accepts. Automaton has 15898 states and 25316 transitions. Word has length 185 [2021-12-14 18:24:26,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:24:26,196 INFO L470 AbstractCegarLoop]: Abstraction has 15898 states and 25316 transitions. [2021-12-14 18:24:26,197 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) [2021-12-14 18:24:26,197 INFO L276 IsEmpty]: Start isEmpty. Operand 15898 states and 25316 transitions. [2021-12-14 18:24:26,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-14 18:24:26,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:24:26,199 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] [2021-12-14 18:24:26,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 18:24:26,199 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:24:26,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:24:26,199 INFO L85 PathProgramCache]: Analyzing trace with hash -517979199, now seen corresponding path program 1 times [2021-12-14 18:24:26,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:24:26,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043063079] [2021-12-14 18:24:26,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:24:26,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:24:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:24:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 18:24:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 18:24:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 18:24:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 18:24:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 18:24:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 18:24:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 18:24:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 18:24:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 18:24:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 18:24:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 18:24:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 18:24:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 18:24:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-14 18:24:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:26,392 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-14 18:24:26,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:24:26,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043063079] [2021-12-14 18:24:26,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043063079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:24:26,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:24:26,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:24:26,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629623200] [2021-12-14 18:24:26,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:24:26,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:24:26,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:24:26,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:24:26,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:24:26,395 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) [2021-12-14 18:24:34,265 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 [] [2021-12-14 18:24:36,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:24:39,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:24:41,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:24:43,488 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:24:45,519 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 [] [2021-12-14 18:24:46,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:24:46,318 INFO L93 Difference]: Finished difference Result 96882 states and 173609 transitions. [2021-12-14 18:24:46,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 18:24:46,319 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 [2021-12-14 18:24:46,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:24:47,016 INFO L225 Difference]: With dead ends: 96882 [2021-12-14 18:24:47,017 INFO L226 Difference]: Without dead ends: 81033 [2021-12-14 18:24:47,132 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 [2021-12-14 18:24:47,133 INFO L933 BasicCegarLoop]: 1494 mSDtfsCounter, 5439 mSDsluCounter, 4169 mSDsCounter, 0 mSdLazyCounter, 5182 mSolverCounterSat, 3437 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5784 SdHoareTripleChecker+Valid, 5663 SdHoareTripleChecker+Invalid, 8625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3437 IncrementalHoareTripleChecker+Valid, 5182 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2021-12-14 18:24:47,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5784 Valid, 5663 Invalid, 8625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3437 Valid, 5182 Invalid, 6 Unknown, 0 Unchecked, 17.7s Time] [2021-12-14 18:24:47,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81033 states. [2021-12-14 18:24:49,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81033 to 64226. [2021-12-14 18:24:50,018 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) [2021-12-14 18:24:50,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64226 states to 64226 states and 109720 transitions. [2021-12-14 18:24:50,391 INFO L78 Accepts]: Start accepts. Automaton has 64226 states and 109720 transitions. Word has length 186 [2021-12-14 18:24:50,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:24:50,392 INFO L470 AbstractCegarLoop]: Abstraction has 64226 states and 109720 transitions. [2021-12-14 18:24:50,392 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) [2021-12-14 18:24:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand 64226 states and 109720 transitions. [2021-12-14 18:24:50,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-14 18:24:50,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:24:50,395 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] [2021-12-14 18:24:50,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 18:24:50,396 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:24:50,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:24:50,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1685994259, now seen corresponding path program 1 times [2021-12-14 18:24:50,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:24:50,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315863150] [2021-12-14 18:24:50,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:24:50,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:24:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:24:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 18:24:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 18:24:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 18:24:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 18:24:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 18:24:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 18:24:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 18:24:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 18:24:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 18:24:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 18:24:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 18:24:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 18:24:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 18:24:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-14 18:24:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-14 18:24:50,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:24:50,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315863150] [2021-12-14 18:24:50,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315863150] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:24:50,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:24:50,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:24:50,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438077625] [2021-12-14 18:24:50,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:24:50,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:24:50,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:24:50,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:24:50,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:24:50,585 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)