./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.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 d291badf6e321259e0b1b1625d2ed48867e61016cda7885a720272c3e12df877 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 10:42:01,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 10:42:01,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 10:42:01,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 10:42:01,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 10:42:01,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 10:42:01,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 10:42:01,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 10:42:01,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 10:42:01,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 10:42:01,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 10:42:01,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 10:42:01,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 10:42:01,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 10:42:01,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 10:42:01,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 10:42:01,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 10:42:01,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 10:42:01,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 10:42:01,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 10:42:01,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 10:42:01,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 10:42:01,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 10:42:01,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 10:42:01,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 10:42:01,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 10:42:01,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 10:42:01,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 10:42:01,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 10:42:01,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 10:42:01,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 10:42:01,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 10:42:01,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 10:42:01,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 10:42:01,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 10:42:01,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 10:42:01,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 10:42:01,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 10:42:01,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 10:42:01,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 10:42:01,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 10:42:01,849 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 10:42:01,875 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 10:42:01,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 10:42:01,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 10:42:01,876 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 10:42:01,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 10:42:01,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 10:42:01,877 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 10:42:01,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 10:42:01,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 10:42:01,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 10:42:01,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 10:42:01,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 10:42:01,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 10:42:01,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 10:42:01,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 10:42:01,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 10:42:01,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 10:42:01,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 10:42:01,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 10:42:01,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 10:42:01,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 10:42:01,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 10:42:01,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 10:42:01,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 10:42:01,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 10:42:01,881 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 10:42:01,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 10:42:01,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 10:42:01,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 10:42:01,882 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d291badf6e321259e0b1b1625d2ed48867e61016cda7885a720272c3e12df877 [2021-11-04 10:42:02,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 10:42:02,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 10:42:02,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 10:42:02,075 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 10:42:02,076 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 10:42:02,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-04 10:42:02,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e746522e5/ce5916d872964a05aa8401cef839bca0/FLAG5e7b501e2 [2021-11-04 10:42:02,918 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 10:42:02,918 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-04 10:42:02,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e746522e5/ce5916d872964a05aa8401cef839bca0/FLAG5e7b501e2 [2021-11-04 10:42:03,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e746522e5/ce5916d872964a05aa8401cef839bca0 [2021-11-04 10:42:03,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 10:42:03,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 10:42:03,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 10:42:03,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 10:42:03,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 10:42:03,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 10:42:03" (1/1) ... [2021-11-04 10:42:03,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ffacef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:42:03, skipping insertion in model container [2021-11-04 10:42:03,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 10:42:03" (1/1) ... [2021-11-04 10:42:03,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 10:42:03,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 10:42:06,111 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462737,462750] [2021-11-04 10:42:06,115 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462906,462919] [2021-11-04 10:42:06,119 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463073,463086] [2021-11-04 10:42:06,120 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463241,463254] [2021-11-04 10:42:06,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 10:42:06,152 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 10:42:06,496 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462737,462750] [2021-11-04 10:42:06,497 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462906,462919] [2021-11-04 10:42:06,497 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463073,463086] [2021-11-04 10:42:06,497 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463241,463254] [2021-11-04 10:42:06,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 10:42:06,622 INFO L208 MainTranslator]: Completed translation [2021-11-04 10:42:06,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:42:06 WrapperNode [2021-11-04 10:42:06,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 10:42:06,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 10:42:06,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 10:42:06,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 10:42:06,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:42:06" (1/1) ... [2021-11-04 10:42:06,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:42:06" (1/1) ... [2021-11-04 10:42:07,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 10:42:07,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 10:42:07,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 10:42:07,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 10:42:07,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:42:06" (1/1) ... [2021-11-04 10:42:07,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:42:06" (1/1) ... [2021-11-04 10:42:07,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:42:06" (1/1) ... [2021-11-04 10:42:07,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:42:06" (1/1) ... [2021-11-04 10:42:07,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:42:06" (1/1) ... [2021-11-04 10:42:07,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:42:06" (1/1) ... [2021-11-04 10:42:07,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:42:06" (1/1) ... [2021-11-04 10:42:08,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 10:42:08,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 10:42:08,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 10:42:08,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 10:42:08,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:42:06" (1/1) ... [2021-11-04 10:42:08,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 10:42:08,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 10:42:08,137 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) [2021-11-04 10:42:08,153 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 [2021-11-04 10:42:08,164 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-04 10:42:08,164 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-04 10:42:08,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 10:42:08,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 10:42:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 10:42:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 10:42:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_release [2021-11-04 10:42:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_release [2021-11-04 10:42:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 10:42:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_commit_done [2021-11-04 10:42:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_commit_done [2021-11-04 10:42:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 10:42:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 10:42:08,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 10:42:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 10:42:08,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 10:42:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 10:42:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 10:42:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 10:42:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 10:42:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 10:42:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_call_done [2021-11-04 10:42:08,167 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_call_done [2021-11-04 10:42:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_release [2021-11-04 10:42:08,167 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_release [2021-11-04 10:42:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_call_done [2021-11-04 10:42:08,167 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_call_done [2021-11-04 10:42:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 10:42:08,168 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-04 10:42:08,168 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_release [2021-11-04 10:42:08,168 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_release [2021-11-04 10:42:08,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 10:42:08,168 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-04 10:42:08,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-04 10:42:12,553 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-04 10:42:12,554 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-04 10:42:12,554 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-04 10:42:12,554 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-04 10:42:12,554 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-04 10:42:12,555 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-04 10:42:12,578 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 10:42:12,579 INFO L299 CfgBuilder]: Removed 5147 assume(true) statements. [2021-11-04 10:42:12,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 10:42:12 BoogieIcfgContainer [2021-11-04 10:42:12,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 10:42:12,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 10:42:12,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 10:42:12,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 10:42:12,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 10:42:03" (1/3) ... [2021-11-04 10:42:12,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702e7047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 10:42:12, skipping insertion in model container [2021-11-04 10:42:12,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:42:06" (2/3) ... [2021-11-04 10:42:12,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702e7047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 10:42:12, skipping insertion in model container [2021-11-04 10:42:12,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 10:42:12" (3/3) ... [2021-11-04 10:42:12,590 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-04 10:42:12,593 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 10:42:12,594 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 91 error locations. [2021-11-04 10:42:12,634 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 10:42:12,639 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 [2021-11-04 10:42:12,639 INFO L340 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2021-11-04 10:42:12,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 4764 states, 4643 states have (on average 1.323066982554383) internal successors, (6143), 4739 states have internal predecessors, (6143), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 18 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-04 10:42:12,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-04 10:42:12,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:42:12,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:42:12,698 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-04 10:42:12,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:42:12,702 INFO L85 PathProgramCache]: Analyzing trace with hash 2070864798, now seen corresponding path program 1 times [2021-11-04 10:42:12,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:42:12,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325300163] [2021-11-04 10:42:12,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:42:12,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:42:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:42:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:42:13,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:42:13,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325300163] [2021-11-04 10:42:13,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325300163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:42:13,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:42:13,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:42:13,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906817588] [2021-11-04 10:42:13,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:42:13,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:42:13,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:42:13,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:42:13,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:42:13,260 INFO L87 Difference]: Start difference. First operand has 4764 states, 4643 states have (on average 1.323066982554383) internal successors, (6143), 4739 states have internal predecessors, (6143), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 18 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:42:15,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:42:38,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:42:38,754 INFO L93 Difference]: Finished difference Result 13329 states and 17368 transitions. [2021-11-04 10:42:38,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:42:38,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-04 10:42:38,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:42:38,821 INFO L225 Difference]: With dead ends: 13329 [2021-11-04 10:42:38,821 INFO L226 Difference]: Without dead ends: 8359 [2021-11-04 10:42:38,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.01ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:42:38,847 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 5350 mSDsluCounter, 6023 mSDsCounter, 0 mSdLazyCounter, 11404 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21852.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5350 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 11413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 74.73ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24400.49ms IncrementalHoareTripleChecker+Time [2021-11-04 10:42:38,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5350 Valid, 729 Invalid, 11413 Unknown, 0 Unchecked, 74.73ms Time], IncrementalHoareTripleChecker [9 Valid, 11404 Invalid, 0 Unknown, 0 Unchecked, 24400.49ms Time] [2021-11-04 10:42:38,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8359 states. [2021-11-04 10:42:39,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8359 to 8279. [2021-11-04 10:42:39,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8279 states, 8128 states have (on average 1.2530757874015748) internal successors, (10185), 8230 states have internal predecessors, (10185), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (44), 36 states have call predecessors, (44), 44 states have call successors, (44) [2021-11-04 10:42:39,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8279 states to 8279 states and 10273 transitions. [2021-11-04 10:42:39,138 INFO L78 Accepts]: Start accepts. Automaton has 8279 states and 10273 transitions. Word has length 115 [2021-11-04 10:42:39,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:42:39,140 INFO L470 AbstractCegarLoop]: Abstraction has 8279 states and 10273 transitions. [2021-11-04 10:42:39,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:42:39,142 INFO L276 IsEmpty]: Start isEmpty. Operand 8279 states and 10273 transitions. [2021-11-04 10:42:39,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-04 10:42:39,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:42:39,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:42:39,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 10:42:39,150 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-04 10:42:39,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:42:39,153 INFO L85 PathProgramCache]: Analyzing trace with hash -655814456, now seen corresponding path program 1 times [2021-11-04 10:42:39,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:42:39,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927864974] [2021-11-04 10:42:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:42:39,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:42:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:42:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:42:39,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:42:39,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927864974] [2021-11-04 10:42:39,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927864974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:42:39,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:42:39,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:42:39,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523850815] [2021-11-04 10:42:39,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:42:39,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:42:39,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:42:39,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:42:39,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:42:39,405 INFO L87 Difference]: Start difference. First operand 8279 states and 10273 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:42:40,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:42:42,439 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:43:01,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:43:01,509 INFO L93 Difference]: Finished difference Result 20326 states and 25222 transitions. [2021-11-04 10:43:01,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:43:01,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-04 10:43:01,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:43:01,548 INFO L225 Difference]: With dead ends: 20326 [2021-11-04 10:43:01,548 INFO L226 Difference]: Without dead ends: 12323 [2021-11-04 10:43:01,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:43:01,564 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 5041 mSDsluCounter, 5404 mSDsCounter, 0 mSdLazyCounter, 10791 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19057.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5041 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 10798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.46ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21460.77ms IncrementalHoareTripleChecker+Time [2021-11-04 10:43:01,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5041 Valid, 108 Invalid, 10798 Unknown, 0 Unchecked, 39.46ms Time], IncrementalHoareTripleChecker [7 Valid, 10791 Invalid, 0 Unknown, 0 Unchecked, 21460.77ms Time] [2021-11-04 10:43:01,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12323 states. [2021-11-04 10:43:01,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12323 to 12025. [2021-11-04 10:43:01,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12025 states, 11848 states have (on average 1.2550641458474003) internal successors, (14870), 11956 states have internal predecessors, (14870), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 50 states have call predecessors, (62), 62 states have call successors, (62) [2021-11-04 10:43:01,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12025 states to 12025 states and 14994 transitions. [2021-11-04 10:43:01,806 INFO L78 Accepts]: Start accepts. Automaton has 12025 states and 14994 transitions. Word has length 124 [2021-11-04 10:43:01,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:43:01,806 INFO L470 AbstractCegarLoop]: Abstraction has 12025 states and 14994 transitions. [2021-11-04 10:43:01,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:43:01,807 INFO L276 IsEmpty]: Start isEmpty. Operand 12025 states and 14994 transitions. [2021-11-04 10:43:01,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-04 10:43:01,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:43:01,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:43:01,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 10:43:01,814 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-04 10:43:01,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:43:01,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1736507055, now seen corresponding path program 1 times [2021-11-04 10:43:01,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:43:01,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191622909] [2021-11-04 10:43:01,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:43:01,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:43:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:43:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:43:02,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:43:02,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191622909] [2021-11-04 10:43:02,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191622909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:43:02,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:43:02,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:43:02,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551707047] [2021-11-04 10:43:02,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:43:02,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:43:02,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:43:02,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:43:02,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:43:02,137 INFO L87 Difference]: Start difference. First operand 12025 states and 14994 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:43:03,139 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:43:04,422 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:43:25,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:43:25,385 INFO L93 Difference]: Finished difference Result 31475 states and 39274 transitions. [2021-11-04 10:43:25,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:43:25,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-04 10:43:25,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:43:25,470 INFO L225 Difference]: With dead ends: 31475 [2021-11-04 10:43:25,470 INFO L226 Difference]: Without dead ends: 19726 [2021-11-04 10:43:25,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:43:25,496 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 5003 mSDsluCounter, 5403 mSDsCounter, 0 mSdLazyCounter, 10863 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19748.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5003 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 10870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.84ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22493.63ms IncrementalHoareTripleChecker+Time [2021-11-04 10:43:25,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5003 Valid, 110 Invalid, 10870 Unknown, 0 Unchecked, 33.84ms Time], IncrementalHoareTripleChecker [7 Valid, 10863 Invalid, 0 Unknown, 0 Unchecked, 22493.63ms Time] [2021-11-04 10:43:25,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19726 states. [2021-11-04 10:43:25,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19726 to 19430. [2021-11-04 10:43:25,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19430 states, 19201 states have (on average 1.2564970574449248) internal successors, (24126), 19321 states have internal predecessors, (24126), 98 states have call successors, (98), 40 states have call predecessors, (98), 40 states have return successors, (98), 78 states have call predecessors, (98), 98 states have call successors, (98) [2021-11-04 10:43:25,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19430 states to 19430 states and 24322 transitions. [2021-11-04 10:43:25,935 INFO L78 Accepts]: Start accepts. Automaton has 19430 states and 24322 transitions. Word has length 126 [2021-11-04 10:43:25,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:43:25,936 INFO L470 AbstractCegarLoop]: Abstraction has 19430 states and 24322 transitions. [2021-11-04 10:43:25,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:43:25,936 INFO L276 IsEmpty]: Start isEmpty. Operand 19430 states and 24322 transitions. [2021-11-04 10:43:25,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-04 10:43:25,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:43:25,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:43:25,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 10:43:25,938 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-04 10:43:25,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:43:25,939 INFO L85 PathProgramCache]: Analyzing trace with hash -77363604, now seen corresponding path program 1 times [2021-11-04 10:43:25,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:43:25,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654203339] [2021-11-04 10:43:25,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:43:25,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:43:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:43:26,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:43:26,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:43:26,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654203339] [2021-11-04 10:43:26,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654203339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:43:26,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:43:26,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:43:26,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406533542] [2021-11-04 10:43:26,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:43:26,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:43:26,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:43:26,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:43:26,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:43:26,113 INFO L87 Difference]: Start difference. First operand 19430 states and 24322 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:43:27,165 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:43:28,215 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:43:52,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:43:52,174 INFO L93 Difference]: Finished difference Result 46207 states and 57884 transitions. [2021-11-04 10:43:52,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:43:52,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-04 10:43:52,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:43:52,282 INFO L225 Difference]: With dead ends: 46207 [2021-11-04 10:43:52,282 INFO L226 Difference]: Without dead ends: 27053 [2021-11-04 10:43:52,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:43:52,325 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 3136 mSDsluCounter, 5367 mSDsCounter, 0 mSdLazyCounter, 10783 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21989.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3136 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 10790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.00ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25046.90ms IncrementalHoareTripleChecker+Time [2021-11-04 10:43:52,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3136 Valid, 108 Invalid, 10790 Unknown, 0 Unchecked, 39.00ms Time], IncrementalHoareTripleChecker [7 Valid, 10783 Invalid, 0 Unknown, 0 Unchecked, 25046.90ms Time] [2021-11-04 10:43:52,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27053 states. [2021-11-04 10:43:52,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27053 to 26769. [2021-11-04 10:43:52,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26769 states, 26438 states have (on average 1.257886375671382) internal successors, (33256), 26582 states have internal predecessors, (33256), 168 states have call successors, (168), 72 states have call predecessors, (168), 72 states have return successors, (168), 132 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-04 10:43:52,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26769 states to 26769 states and 33592 transitions. [2021-11-04 10:43:52,890 INFO L78 Accepts]: Start accepts. Automaton has 26769 states and 33592 transitions. Word has length 125 [2021-11-04 10:43:52,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:43:52,891 INFO L470 AbstractCegarLoop]: Abstraction has 26769 states and 33592 transitions. [2021-11-04 10:43:52,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:43:52,891 INFO L276 IsEmpty]: Start isEmpty. Operand 26769 states and 33592 transitions. [2021-11-04 10:43:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-04 10:43:52,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:43:52,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:43:52,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 10:43:52,896 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr71ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-04 10:43:52,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:43:52,896 INFO L85 PathProgramCache]: Analyzing trace with hash -974843764, now seen corresponding path program 1 times [2021-11-04 10:43:52,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:43:52,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338713662] [2021-11-04 10:43:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:43:52,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:43:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:43:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:43:53,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:43:53,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338713662] [2021-11-04 10:43:53,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338713662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:43:53,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:43:53,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:43:53,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667448178] [2021-11-04 10:43:53,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:43:53,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:43:53,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:43:53,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:43:53,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:43:53,038 INFO L87 Difference]: Start difference. First operand 26769 states and 33592 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:43:54,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:43:56,203 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:44:21,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:44:21,287 INFO L93 Difference]: Finished difference Result 63173 states and 79357 transitions. [2021-11-04 10:44:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:44:21,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-04 10:44:21,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:44:21,419 INFO L225 Difference]: With dead ends: 63173 [2021-11-04 10:44:21,419 INFO L226 Difference]: Without dead ends: 36680 [2021-11-04 10:44:21,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:44:21,469 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 3081 mSDsluCounter, 5368 mSDsCounter, 0 mSdLazyCounter, 12756 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23793.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3081 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 12763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.70ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27164.29ms IncrementalHoareTripleChecker+Time [2021-11-04 10:44:21,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3081 Valid, 110 Invalid, 12763 Unknown, 0 Unchecked, 37.70ms Time], IncrementalHoareTripleChecker [7 Valid, 12756 Invalid, 0 Unknown, 0 Unchecked, 27164.29ms Time] [2021-11-04 10:44:21,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36680 states. [2021-11-04 10:44:22,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36680 to 36392. [2021-11-04 10:44:22,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36392 states, 35863 states have (on average 1.2593759585087694) internal successors, (45165), 36055 states have internal predecessors, (45165), 302 states have call successors, (302), 136 states have call predecessors, (302), 136 states have return successors, (302), 234 states have call predecessors, (302), 302 states have call successors, (302) [2021-11-04 10:44:22,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36392 states to 36392 states and 45769 transitions. [2021-11-04 10:44:22,216 INFO L78 Accepts]: Start accepts. Automaton has 36392 states and 45769 transitions. Word has length 126 [2021-11-04 10:44:22,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:44:22,216 INFO L470 AbstractCegarLoop]: Abstraction has 36392 states and 45769 transitions. [2021-11-04 10:44:22,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:44:22,216 INFO L276 IsEmpty]: Start isEmpty. Operand 36392 states and 45769 transitions. [2021-11-04 10:44:22,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-04 10:44:22,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:44:22,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:44:22,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 10:44:22,218 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-04 10:44:22,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:44:22,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2107975688, now seen corresponding path program 1 times [2021-11-04 10:44:22,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:44:22,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382775943] [2021-11-04 10:44:22,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:44:22,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:44:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:44:22,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:44:22,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:44:22,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382775943] [2021-11-04 10:44:22,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382775943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:44:22,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:44:22,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:44:22,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494281620] [2021-11-04 10:44:22,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:44:22,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:44:22,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:44:22,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:44:22,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:44:22,369 INFO L87 Difference]: Start difference. First operand 36392 states and 45769 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:44:24,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:44:26,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:44:56,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:44:56,418 INFO L93 Difference]: Finished difference Result 104940 states and 132072 transitions. [2021-11-04 10:44:56,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:44:56,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-04 10:44:56,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:44:56,644 INFO L225 Difference]: With dead ends: 104940 [2021-11-04 10:44:56,644 INFO L226 Difference]: Without dead ends: 68824 [2021-11-04 10:44:56,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:44:56,969 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 5003 mSDsluCounter, 5402 mSDsCounter, 0 mSdLazyCounter, 11451 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28155.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5003 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 11459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.47ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11451 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32258.68ms IncrementalHoareTripleChecker+Time [2021-11-04 10:44:56,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5003 Valid, 124 Invalid, 11459 Unknown, 0 Unchecked, 46.47ms Time], IncrementalHoareTripleChecker [7 Valid, 11451 Invalid, 1 Unknown, 0 Unchecked, 32258.68ms Time] [2021-11-04 10:44:57,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68824 states. [2021-11-04 10:44:58,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68824 to 68512. [2021-11-04 10:44:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68512 states, 67671 states have (on average 1.2594907715269466) internal successors, (85231), 67938 states have internal predecessors, (85231), 514 states have call successors, (514), 236 states have call predecessors, (514), 236 states have return successors, (514), 396 states have call predecessors, (514), 514 states have call successors, (514) [2021-11-04 10:44:58,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68512 states to 68512 states and 86259 transitions. [2021-11-04 10:44:58,590 INFO L78 Accepts]: Start accepts. Automaton has 68512 states and 86259 transitions. Word has length 128 [2021-11-04 10:44:58,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:44:58,591 INFO L470 AbstractCegarLoop]: Abstraction has 68512 states and 86259 transitions. [2021-11-04 10:44:58,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:44:58,591 INFO L276 IsEmpty]: Start isEmpty. Operand 68512 states and 86259 transitions. [2021-11-04 10:44:58,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-04 10:44:58,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:44:58,592 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:44:58,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 10:44:58,593 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-04 10:44:58,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:44:58,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1619497385, now seen corresponding path program 1 times [2021-11-04 10:44:58,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:44:58,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404244768] [2021-11-04 10:44:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:44:58,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:44:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:44:58,751 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:44:58,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:44:58,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404244768] [2021-11-04 10:44:58,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404244768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:44:58,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:44:58,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:44:58,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816393507] [2021-11-04 10:44:58,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:44:58,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:44:58,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:44:58,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:44:58,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:44:58,753 INFO L87 Difference]: Start difference. First operand 68512 states and 86259 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:45:00,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:45:02,273 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:45:44,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:45:44,248 INFO L93 Difference]: Finished difference Result 204008 states and 257046 transitions. [2021-11-04 10:45:44,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:45:44,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-04 10:45:44,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:45:44,802 INFO L225 Difference]: With dead ends: 204008 [2021-11-04 10:45:44,802 INFO L226 Difference]: Without dead ends: 135820 [2021-11-04 10:45:44,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:45:44,926 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 4873 mSDsluCounter, 5406 mSDsCounter, 0 mSdLazyCounter, 15610 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36698.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4873 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 15617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.61ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42415.57ms IncrementalHoareTripleChecker+Time [2021-11-04 10:45:44,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4873 Valid, 132 Invalid, 15617 Unknown, 0 Unchecked, 52.61ms Time], IncrementalHoareTripleChecker [7 Valid, 15610 Invalid, 0 Unknown, 0 Unchecked, 42415.57ms Time] [2021-11-04 10:45:45,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135820 states. [2021-11-04 10:45:47,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135820 to 135740. [2021-11-04 10:45:47,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135740 states, 134149 states have (on average 1.2585259673944644) internal successors, (168830), 134593 states have internal predecessors, (168830), 1028 states have call successors, (1028), 472 states have call predecessors, (1028), 472 states have return successors, (1028), 792 states have call predecessors, (1028), 1028 states have call successors, (1028) [2021-11-04 10:45:48,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135740 states to 135740 states and 170886 transitions. [2021-11-04 10:45:48,613 INFO L78 Accepts]: Start accepts. Automaton has 135740 states and 170886 transitions. Word has length 138 [2021-11-04 10:45:48,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:45:48,614 INFO L470 AbstractCegarLoop]: Abstraction has 135740 states and 170886 transitions. [2021-11-04 10:45:48,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:45:48,614 INFO L276 IsEmpty]: Start isEmpty. Operand 135740 states and 170886 transitions. [2021-11-04 10:45:48,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-04 10:45:48,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:45:48,616 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:45:48,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 10:45:48,616 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-04 10:45:48,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:45:48,617 INFO L85 PathProgramCache]: Analyzing trace with hash -2012524395, now seen corresponding path program 1 times [2021-11-04 10:45:48,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:45:48,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223656811] [2021-11-04 10:45:48,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:45:48,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:45:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:45:48,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:45:48,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:45:48,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223656811] [2021-11-04 10:45:48,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223656811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:45:48,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:45:48,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:45:48,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254520782] [2021-11-04 10:45:48,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:45:48,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:45:48,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:45:48,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:45:48,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:45:48,774 INFO L87 Difference]: Start difference. First operand 135740 states and 170886 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:45:50,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:45:52,653 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:46:35,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:46:35,262 INFO L93 Difference]: Finished difference Result 338496 states and 426364 transitions. [2021-11-04 10:46:35,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:46:35,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-04 10:46:35,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:46:36,029 INFO L225 Difference]: With dead ends: 338496 [2021-11-04 10:46:36,029 INFO L226 Difference]: Without dead ends: 203080 [2021-11-04 10:46:36,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:46:36,284 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 4939 mSDsluCounter, 5341 mSDsCounter, 0 mSdLazyCounter, 15545 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36282.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4939 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 15554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.76ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 15545 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41832.93ms IncrementalHoareTripleChecker+Time [2021-11-04 10:46:36,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4939 Valid, 132 Invalid, 15554 Unknown, 0 Unchecked, 47.76ms Time], IncrementalHoareTripleChecker [8 Valid, 15545 Invalid, 1 Unknown, 0 Unchecked, 41832.93ms Time] [2021-11-04 10:46:36,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203080 states. [2021-11-04 10:46:40,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203080 to 202721. [2021-11-04 10:46:40,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202721 states, 200380 states have (on average 1.2585188142529196) internal successors, (252182), 201001 states have internal predecessors, (252182), 1542 states have call successors, (1542), 708 states have call predecessors, (1542), 708 states have return successors, (1542), 1188 states have call predecessors, (1542), 1542 states have call successors, (1542) [2021-11-04 10:46:41,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202721 states to 202721 states and 255266 transitions. [2021-11-04 10:46:41,473 INFO L78 Accepts]: Start accepts. Automaton has 202721 states and 255266 transitions. Word has length 138 [2021-11-04 10:46:41,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:46:41,474 INFO L470 AbstractCegarLoop]: Abstraction has 202721 states and 255266 transitions. [2021-11-04 10:46:41,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:46:41,474 INFO L276 IsEmpty]: Start isEmpty. Operand 202721 states and 255266 transitions. [2021-11-04 10:46:41,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-04 10:46:41,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:46:41,485 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:46:41,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 10:46:41,485 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-04 10:46:41,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:46:41,486 INFO L85 PathProgramCache]: Analyzing trace with hash -491606047, now seen corresponding path program 1 times [2021-11-04 10:46:41,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:46:41,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816288513] [2021-11-04 10:46:41,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:46:41,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:46:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:46:41,753 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 10:46:41,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:46:41,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816288513] [2021-11-04 10:46:41,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816288513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:46:41,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:46:41,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:46:41,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555455532] [2021-11-04 10:46:41,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:46:41,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:46:41,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:46:41,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:46:41,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:46:41,756 INFO L87 Difference]: Start difference. First operand 202721 states and 255266 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:46:43,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:46:45,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:47:11,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:47:11,376 INFO L93 Difference]: Finished difference Result 202721 states and 255266 transitions. [2021-11-04 10:47:11,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:47:11,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-11-04 10:47:11,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:47:11,992 INFO L225 Difference]: With dead ends: 202721 [2021-11-04 10:47:11,993 INFO L226 Difference]: Without dead ends: 202715 [2021-11-04 10:47:12,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.81ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:47:12,075 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 5303 mSDsluCounter, 5285 mSDsCounter, 0 mSdLazyCounter, 10725 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22652.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5303 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 10774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.19ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 10725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26181.87ms IncrementalHoareTripleChecker+Time [2021-11-04 10:47:12,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5303 Valid, 88 Invalid, 10774 Unknown, 0 Unchecked, 57.19ms Time], IncrementalHoareTripleChecker [49 Valid, 10725 Invalid, 0 Unknown, 0 Unchecked, 26181.87ms Time] [2021-11-04 10:47:12,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202715 states. [2021-11-04 10:47:16,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202715 to 202715. [2021-11-04 10:47:16,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202715 states, 200377 states have (on average 1.2585077129610684) internal successors, (252176), 200995 states have internal predecessors, (252176), 1542 states have call successors, (1542), 708 states have call predecessors, (1542), 708 states have return successors, (1542), 1188 states have call predecessors, (1542), 1542 states have call successors, (1542) [2021-11-04 10:47:17,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202715 states to 202715 states and 255260 transitions. [2021-11-04 10:47:17,354 INFO L78 Accepts]: Start accepts. Automaton has 202715 states and 255260 transitions. Word has length 146 [2021-11-04 10:47:17,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:47:17,356 INFO L470 AbstractCegarLoop]: Abstraction has 202715 states and 255260 transitions. [2021-11-04 10:47:17,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:47:17,360 INFO L276 IsEmpty]: Start isEmpty. Operand 202715 states and 255260 transitions. [2021-11-04 10:47:17,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-04 10:47:17,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:47:17,366 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:47:17,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 10:47:17,367 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-04 10:47:17,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:47:17,367 INFO L85 PathProgramCache]: Analyzing trace with hash 13203300, now seen corresponding path program 1 times [2021-11-04 10:47:17,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:47:17,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056924191] [2021-11-04 10:47:17,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:47:17,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:47:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:47:17,891 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 10:47:17,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:47:17,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056924191] [2021-11-04 10:47:17,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056924191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:47:17,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:47:17,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:47:17,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372060286] [2021-11-04 10:47:17,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:47:17,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:47:17,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:47:17,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:47:17,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:47:17,893 INFO L87 Difference]: Start difference. First operand 202715 states and 255260 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:47:19,170 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:47:20,534 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:47:30,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-04 10:47:39,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 10:48:10,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:48:10,884 INFO L93 Difference]: Finished difference Result 405058 states and 510109 transitions. [2021-11-04 10:48:10,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 10:48:10,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-11-04 10:48:10,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:48:12,030 INFO L225 Difference]: With dead ends: 405058 [2021-11-04 10:48:12,030 INFO L226 Difference]: Without dead ends: 405052 [2021-11-04 10:48:12,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.73ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:48:12,178 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 5290 mSDsluCounter, 10424 mSDsCounter, 0 mSdLazyCounter, 15803 mSolverCounterSat, 100 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39087.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5290 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 15904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 63.69ms SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 15803 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45612.45ms IncrementalHoareTripleChecker+Time [2021-11-04 10:48:12,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5290 Valid, 176 Invalid, 15904 Unknown, 0 Unchecked, 63.69ms Time], IncrementalHoareTripleChecker [100 Valid, 15803 Invalid, 1 Unknown, 0 Unchecked, 45612.45ms Time] [2021-11-04 10:48:12,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405052 states. [2021-11-04 10:48:21,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405052 to 404552. [2021-11-04 10:48:22,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404552 states, 399964 states have (on average 1.258808292746347) internal successors, (503478), 401113 states have internal predecessors, (503478), 3084 states have call successors, (3084), 1416 states have call predecessors, (3084), 1416 states have return successors, (3084), 2376 states have call predecessors, (3084), 3084 states have call successors, (3084) [2021-11-04 10:48:24,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404552 states to 404552 states and 509646 transitions. [2021-11-04 10:48:24,590 INFO L78 Accepts]: Start accepts. Automaton has 404552 states and 509646 transitions. Word has length 148 [2021-11-04 10:48:24,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:48:24,590 INFO L470 AbstractCegarLoop]: Abstraction has 404552 states and 509646 transitions. [2021-11-04 10:48:24,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:48:24,591 INFO L276 IsEmpty]: Start isEmpty. Operand 404552 states and 509646 transitions. [2021-11-04 10:48:24,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-04 10:48:24,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:48:24,592 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:48:24,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-04 10:48:24,593 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-04 10:48:24,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:48:24,593 INFO L85 PathProgramCache]: Analyzing trace with hash -196318361, now seen corresponding path program 1 times [2021-11-04 10:48:24,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:48:24,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707708643] [2021-11-04 10:48:24,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:48:24,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:48:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:48:24,822 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 10:48:24,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:48:24,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707708643] [2021-11-04 10:48:24,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707708643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:48:24,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:48:24,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:48:24,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891678319] [2021-11-04 10:48:24,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:48:24,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:48:24,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:48:24,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:48:24,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:48:24,824 INFO L87 Difference]: Start difference. First operand 404552 states and 509646 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:48:26,873 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []