./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fe313da0c6b218ced50e4197dc755b81036d59e37c56d6141b10ae8e848ca9fd --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 13:25:02,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 13:25:02,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 13:25:03,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 13:25:03,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 13:25:03,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 13:25:03,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 13:25:03,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 13:25:03,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 13:25:03,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 13:25:03,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 13:25:03,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 13:25:03,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 13:25:03,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 13:25:03,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 13:25:03,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 13:25:03,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 13:25:03,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 13:25:03,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 13:25:03,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 13:25:03,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 13:25:03,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 13:25:03,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 13:25:03,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 13:25:03,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 13:25:03,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 13:25:03,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 13:25:03,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 13:25:03,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 13:25:03,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 13:25:03,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 13:25:03,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 13:25:03,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 13:25:03,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 13:25:03,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 13:25:03,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 13:25:03,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 13:25:03,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 13:25:03,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 13:25:03,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 13:25:03,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 13:25:03,048 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 13:25:03,066 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 13:25:03,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 13:25:03,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 13:25:03,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 13:25:03,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 13:25:03,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 13:25:03,068 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 13:25:03,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 13:25:03,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 13:25:03,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 13:25:03,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 13:25:03,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 13:25:03,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 13:25:03,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 13:25:03,069 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 13:25:03,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 13:25:03,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 13:25:03,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 13:25:03,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 13:25:03,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:25:03,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 13:25:03,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 13:25:03,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 13:25:03,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 13:25:03,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 13:25:03,071 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 13:25:03,071 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 13:25:03,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 13:25:03,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 13:25:03,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe313da0c6b218ced50e4197dc755b81036d59e37c56d6141b10ae8e848ca9fd [2021-11-07 13:25:03,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 13:25:03,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 13:25:03,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 13:25:03,239 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 13:25:03,240 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 13:25:03,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i [2021-11-07 13:25:03,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19871363a/dddaa16195ad47e4a875f9e18c175767/FLAG2d06ae149 [2021-11-07 13:25:03,894 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 13:25:03,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i [2021-11-07 13:25:03,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19871363a/dddaa16195ad47e4a875f9e18c175767/FLAG2d06ae149 [2021-11-07 13:25:04,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19871363a/dddaa16195ad47e4a875f9e18c175767 [2021-11-07 13:25:04,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 13:25:04,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 13:25:04,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 13:25:04,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 13:25:04,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 13:25:04,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:04" (1/1) ... [2021-11-07 13:25:04,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@580e2b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:04, skipping insertion in model container [2021-11-07 13:25:04,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:04" (1/1) ... [2021-11-07 13:25:04,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 13:25:04,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 13:25:04,479 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5693] [2021-11-07 13:25:04,480 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5694-5695] [2021-11-07 13:25:04,804 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-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i[183417,183430] [2021-11-07 13:25:05,813 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-07 13:25:05,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:25:05,883 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 13:25:05,941 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5693] [2021-11-07 13:25:05,941 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5694-5695] [2021-11-07 13:25:05,952 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-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i[183417,183430] [2021-11-07 13:25:06,241 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-07 13:25:06,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:25:06,373 INFO L208 MainTranslator]: Completed translation [2021-11-07 13:25:06,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:06 WrapperNode [2021-11-07 13:25:06,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 13:25:06,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 13:25:06,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 13:25:06,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 13:25:06,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:06" (1/1) ... [2021-11-07 13:25:06,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:06" (1/1) ... [2021-11-07 13:25:07,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 13:25:07,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 13:25:07,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 13:25:07,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 13:25:07,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:06" (1/1) ... [2021-11-07 13:25:07,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:06" (1/1) ... [2021-11-07 13:25:07,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:06" (1/1) ... [2021-11-07 13:25:07,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:06" (1/1) ... [2021-11-07 13:25:08,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:06" (1/1) ... [2021-11-07 13:25:08,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:06" (1/1) ... [2021-11-07 13:25:08,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:06" (1/1) ... [2021-11-07 13:25:09,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 13:25:09,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 13:25:09,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 13:25:09,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 13:25:09,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:06" (1/1) ... [2021-11-07 13:25:09,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:25:09,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:25:09,165 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) [2021-11-07 13:25:09,183 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 [2021-11-07 13:25:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-07 13:25:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 13:25:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-07 13:25:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-07 13:25:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 13:25:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure unix_release_sock [2021-11-07 13:25:09,191 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_release_sock [2021-11-07 13:25:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 13:25:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 13:25:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 13:25:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 13:25:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 13:25:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 13:25:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 13:25:09,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 13:25:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 13:25:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 13:25:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 13:25:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 13:25:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 13:25:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 13:25:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 13:25:29,628 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 13:25:29,629 INFO L299 CfgBuilder]: Removed 16976 assume(true) statements. [2021-11-07 13:25:29,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:25:29 BoogieIcfgContainer [2021-11-07 13:25:29,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 13:25:29,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 13:25:29,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 13:25:29,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 13:25:29,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:25:04" (1/3) ... [2021-11-07 13:25:29,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445f22d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:25:29, skipping insertion in model container [2021-11-07 13:25:29,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:06" (2/3) ... [2021-11-07 13:25:29,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445f22d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:25:29, skipping insertion in model container [2021-11-07 13:25:29,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:25:29" (3/3) ... [2021-11-07 13:25:29,644 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i [2021-11-07 13:25:29,648 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 13:25:29,648 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-07 13:25:29,711 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 13:25:29,715 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 [2021-11-07 13:25:29,716 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-07 13:25:29,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 12450 states, 12431 states have (on average 1.4146086396910948) internal successors, (17585), 12444 states have internal predecessors, (17585), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 13:25:29,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 13:25:29,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:25:29,843 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] [2021-11-07 13:25:29,844 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 13:25:29,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:25:29,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1034210886, now seen corresponding path program 1 times [2021-11-07 13:25:29,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:25:29,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933261317] [2021-11-07 13:25:29,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:25:29,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:25:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:25:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:25:30,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:25:30,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933261317] [2021-11-07 13:25:30,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933261317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:25:30,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:25:30,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:25:30,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458888432] [2021-11-07 13:25:30,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:25:30,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:25:30,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:25:30,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:25:30,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:25:30,394 INFO L87 Difference]: Start difference. First operand has 12450 states, 12431 states have (on average 1.4146086396910948) internal successors, (17585), 12444 states have internal predecessors, (17585), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-11-07 13:25:31,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:25:31,371 INFO L93 Difference]: Finished difference Result 33694 states and 47646 transitions. [2021-11-07 13:25:31,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:25:31,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2021-11-07 13:25:31,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:25:31,456 INFO L225 Difference]: With dead ends: 33694 [2021-11-07 13:25:31,457 INFO L226 Difference]: Without dead ends: 21094 [2021-11-07 13:25:31,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:25:31,534 INFO L933 BasicCegarLoop]: 17428 mSDtfsCounter, 12638 mSDsluCounter, 17087 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12638 SdHoareTripleChecker+Valid, 34515 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 318.55ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 113.18ms IncrementalHoareTripleChecker+Time [2021-11-07 13:25:31,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12638 Valid, 34515 Invalid, 56 Unknown, 0 Unchecked, 318.55ms Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 113.18ms Time] [2021-11-07 13:25:31,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21094 states. [2021-11-07 13:25:32,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21094 to 20931. [2021-11-07 13:25:32,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20931 states, 20907 states have (on average 1.4010618453149664) internal successors, (29292), 20921 states have internal predecessors, (29292), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-07 13:25:32,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20931 states to 20931 states and 29314 transitions. [2021-11-07 13:25:32,296 INFO L78 Accepts]: Start accepts. Automaton has 20931 states and 29314 transitions. Word has length 82 [2021-11-07 13:25:32,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:25:32,298 INFO L470 AbstractCegarLoop]: Abstraction has 20931 states and 29314 transitions. [2021-11-07 13:25:32,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-11-07 13:25:32,300 INFO L276 IsEmpty]: Start isEmpty. Operand 20931 states and 29314 transitions. [2021-11-07 13:25:32,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 13:25:32,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:25:32,304 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] [2021-11-07 13:25:32,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 13:25:32,305 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 13:25:32,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:25:32,307 INFO L85 PathProgramCache]: Analyzing trace with hash -2021014327, now seen corresponding path program 1 times [2021-11-07 13:25:32,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:25:32,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735725184] [2021-11-07 13:25:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:25:32,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:25:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:25:32,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:25:32,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:25:32,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735725184] [2021-11-07 13:25:32,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735725184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:25:32,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:25:32,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:25:32,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838391980] [2021-11-07 13:25:32,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:25:32,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:25:32,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:25:32,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:25:32,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:25:32,501 INFO L87 Difference]: Start difference. First operand 20931 states and 29314 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-11-07 13:25:33,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:25:33,358 INFO L93 Difference]: Finished difference Result 55529 states and 77909 transitions. [2021-11-07 13:25:33,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:25:33,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2021-11-07 13:25:33,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:25:33,497 INFO L225 Difference]: With dead ends: 55529 [2021-11-07 13:25:33,498 INFO L226 Difference]: Without dead ends: 34853 [2021-11-07 13:25:33,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.36ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:25:33,552 INFO L933 BasicCegarLoop]: 21935 mSDtfsCounter, 12429 mSDsluCounter, 16917 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12429 SdHoareTripleChecker+Valid, 38852 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.40ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.34ms IncrementalHoareTripleChecker+Time [2021-11-07 13:25:33,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12429 Valid, 38852 Invalid, 56 Unknown, 0 Unchecked, 42.40ms Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 94.34ms Time] [2021-11-07 13:25:33,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34853 states. [2021-11-07 13:25:34,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34853 to 34782. [2021-11-07 13:25:34,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34782 states, 34749 states have (on average 1.4035224035224034) internal successors, (48771), 34765 states have internal predecessors, (48771), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 13:25:34,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34782 states to 34782 states and 48807 transitions. [2021-11-07 13:25:34,426 INFO L78 Accepts]: Start accepts. Automaton has 34782 states and 48807 transitions. Word has length 83 [2021-11-07 13:25:34,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:25:34,431 INFO L470 AbstractCegarLoop]: Abstraction has 34782 states and 48807 transitions. [2021-11-07 13:25:34,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-11-07 13:25:34,431 INFO L276 IsEmpty]: Start isEmpty. Operand 34782 states and 48807 transitions. [2021-11-07 13:25:34,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 13:25:34,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:25:34,433 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] [2021-11-07 13:25:34,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 13:25:34,434 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 13:25:34,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:25:34,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1164295681, now seen corresponding path program 1 times [2021-11-07 13:25:34,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:25:34,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179139996] [2021-11-07 13:25:34,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:25:34,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:25:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:25:34,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:25:34,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:25:34,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179139996] [2021-11-07 13:25:34,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179139996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:25:34,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:25:34,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:25:34,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421818663] [2021-11-07 13:25:34,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:25:34,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:25:34,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:25:34,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:25:34,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:25:34,628 INFO L87 Difference]: Start difference. First operand 34782 states and 48807 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-11-07 13:25:35,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:25:35,621 INFO L93 Difference]: Finished difference Result 87943 states and 123567 transitions. [2021-11-07 13:25:35,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:25:35,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 89 [2021-11-07 13:25:35,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:25:35,785 INFO L225 Difference]: With dead ends: 87943 [2021-11-07 13:25:35,785 INFO L226 Difference]: Without dead ends: 53416 [2021-11-07 13:25:35,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:25:35,861 INFO L933 BasicCegarLoop]: 28605 mSDtfsCounter, 12002 mSDsluCounter, 16917 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12002 SdHoareTripleChecker+Valid, 45522 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.50ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.23ms IncrementalHoareTripleChecker+Time [2021-11-07 13:25:35,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12002 Valid, 45522 Invalid, 56 Unknown, 0 Unchecked, 39.50ms Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 78.23ms Time] [2021-11-07 13:25:35,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53416 states. [2021-11-07 13:25:36,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53416 to 53402. [2021-11-07 13:25:36,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53402 states, 53357 states have (on average 1.4052139363157599) internal successors, (74978), 53375 states have internal predecessors, (74978), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-07 13:25:36,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53402 states to 53402 states and 75032 transitions. [2021-11-07 13:25:36,985 INFO L78 Accepts]: Start accepts. Automaton has 53402 states and 75032 transitions. Word has length 89 [2021-11-07 13:25:36,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:25:36,987 INFO L470 AbstractCegarLoop]: Abstraction has 53402 states and 75032 transitions. [2021-11-07 13:25:36,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-11-07 13:25:36,988 INFO L276 IsEmpty]: Start isEmpty. Operand 53402 states and 75032 transitions. [2021-11-07 13:25:36,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-07 13:25:36,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:25:36,997 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:25:36,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 13:25:36,997 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 13:25:36,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:25:36,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1334107731, now seen corresponding path program 1 times [2021-11-07 13:25:36,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:25:36,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625311776] [2021-11-07 13:25:36,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:25:36,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:25:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:25:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 13:25:37,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:25:37,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625311776] [2021-11-07 13:25:37,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625311776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:25:37,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:25:37,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 13:25:37,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377667477] [2021-11-07 13:25:37,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:25:37,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:25:37,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:25:37,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:25:37,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:25:37,260 INFO L87 Difference]: Start difference. First operand 53402 states and 75032 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 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) [2021-11-07 13:25:38,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:25:38,672 INFO L93 Difference]: Finished difference Result 82828 states and 117761 transitions. [2021-11-07 13:25:38,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:25:38,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 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 149 [2021-11-07 13:25:38,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:25:38,931 INFO L225 Difference]: With dead ends: 82828 [2021-11-07 13:25:38,931 INFO L226 Difference]: Without dead ends: 82806 [2021-11-07 13:25:38,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:25:38,972 INFO L933 BasicCegarLoop]: 23292 mSDtfsCounter, 13880 mSDsluCounter, 12115 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 309.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13880 SdHoareTripleChecker+Valid, 35407 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 162.50ms SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 380.62ms IncrementalHoareTripleChecker+Time [2021-11-07 13:25:38,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13880 Valid, 35407 Invalid, 464 Unknown, 0 Unchecked, 162.50ms Time], IncrementalHoareTripleChecker [213 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 380.62ms Time] [2021-11-07 13:25:39,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82806 states. [2021-11-07 13:25:40,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82806 to 63005. [2021-11-07 13:25:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63005 states, 62960 states have (on average 1.4061467598475221) internal successors, (88531), 62978 states have internal predecessors, (88531), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-07 13:25:40,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63005 states to 63005 states and 88585 transitions. [2021-11-07 13:25:40,388 INFO L78 Accepts]: Start accepts. Automaton has 63005 states and 88585 transitions. Word has length 149 [2021-11-07 13:25:40,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:25:40,389 INFO L470 AbstractCegarLoop]: Abstraction has 63005 states and 88585 transitions. [2021-11-07 13:25:40,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 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) [2021-11-07 13:25:40,389 INFO L276 IsEmpty]: Start isEmpty. Operand 63005 states and 88585 transitions. [2021-11-07 13:25:40,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-07 13:25:40,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:25:40,419 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:25:40,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 13:25:40,419 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 13:25:40,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:25:40,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1674999198, now seen corresponding path program 1 times [2021-11-07 13:25:40,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:25:40,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537058357] [2021-11-07 13:25:40,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:25:40,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:25:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:25:40,600 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 13:25:40,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:25:40,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537058357] [2021-11-07 13:25:40,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537058357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:25:40,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:25:40,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:25:40,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520246646] [2021-11-07 13:25:40,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:25:40,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:25:40,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:25:40,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:25:40,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:25:40,602 INFO L87 Difference]: Start difference. First operand 63005 states and 88585 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-11-07 13:25:42,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:25:44,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:25:44,987 INFO L93 Difference]: Finished difference Result 188497 states and 265173 transitions. [2021-11-07 13:25:44,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:25:44,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 165 [2021-11-07 13:25:44,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:25:45,478 INFO L225 Difference]: With dead ends: 188497 [2021-11-07 13:25:45,478 INFO L226 Difference]: Without dead ends: 125747 [2021-11-07 13:25:45,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.02ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:25:45,560 INFO L933 BasicCegarLoop]: 34198 mSDtfsCounter, 16967 mSDsluCounter, 17248 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2030.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16967 SdHoareTripleChecker+Valid, 51446 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.10ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2082.43ms IncrementalHoareTripleChecker+Time [2021-11-07 13:25:45,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16967 Valid, 51446 Invalid, 7 Unknown, 0 Unchecked, 41.10ms Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2082.43ms Time] [2021-11-07 13:25:45,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125747 states. [2021-11-07 13:25:47,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125747 to 63013. [2021-11-07 13:25:47,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63013 states, 62968 states have (on average 1.4060951594460678) internal successors, (88539), 62986 states have internal predecessors, (88539), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-07 13:25:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63013 states to 63013 states and 88593 transitions. [2021-11-07 13:25:47,604 INFO L78 Accepts]: Start accepts. Automaton has 63013 states and 88593 transitions. Word has length 165 [2021-11-07 13:25:47,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:25:47,605 INFO L470 AbstractCegarLoop]: Abstraction has 63013 states and 88593 transitions. [2021-11-07 13:25:47,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-11-07 13:25:47,605 INFO L276 IsEmpty]: Start isEmpty. Operand 63013 states and 88593 transitions. [2021-11-07 13:25:47,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-07 13:25:47,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:25:47,628 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:25:47,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 13:25:47,628 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 13:25:47,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:25:47,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1540985692, now seen corresponding path program 1 times [2021-11-07 13:25:47,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:25:47,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174581606] [2021-11-07 13:25:47,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:25:47,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:25:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:25:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:25:47,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:25:47,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174581606] [2021-11-07 13:25:47,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174581606] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:25:47,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009822917] [2021-11-07 13:25:47,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:25:47,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:25:47,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:25:47,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 13:25:47,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 13:25:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:25:49,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 3275 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 13:25:49,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:25:49,462 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 13:25:49,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 13:25:49,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009822917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:25:49,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 13:25:49,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2021-11-07 13:25:49,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705348575] [2021-11-07 13:25:49,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:25:49,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:25:49,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:25:49,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:25:49,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-11-07 13:25:49,464 INFO L87 Difference]: Start difference. First operand 63013 states and 88593 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 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) [2021-11-07 13:25:51,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:25:53,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:25:53,057 INFO L93 Difference]: Finished difference Result 125837 states and 176985 transitions. [2021-11-07 13:25:53,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 13:25:53,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 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 165 [2021-11-07 13:25:53,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:25:53,201 INFO L225 Difference]: With dead ends: 125837 [2021-11-07 13:25:53,201 INFO L226 Difference]: Without dead ends: 62999 [2021-11-07 13:25:53,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.03ms TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-07 13:25:53,282 INFO L933 BasicCegarLoop]: 17251 mSDtfsCounter, 6 mSDsluCounter, 51748 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2033.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 68999 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.48ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2093.72ms IncrementalHoareTripleChecker+Time [2021-11-07 13:25:53,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 68999 Invalid, 18 Unknown, 0 Unchecked, 39.48ms Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 2093.72ms Time] [2021-11-07 13:25:53,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62999 states. [2021-11-07 13:25:54,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62999 to 62901. [2021-11-07 13:25:54,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62901 states, 62856 states have (on average 1.4063096601756395) internal successors, (88395), 62874 states have internal predecessors, (88395), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-07 13:25:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62901 states to 62901 states and 88449 transitions. [2021-11-07 13:25:54,843 INFO L78 Accepts]: Start accepts. Automaton has 62901 states and 88449 transitions. Word has length 165 [2021-11-07 13:25:54,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:25:54,843 INFO L470 AbstractCegarLoop]: Abstraction has 62901 states and 88449 transitions. [2021-11-07 13:25:54,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 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) [2021-11-07 13:25:54,843 INFO L276 IsEmpty]: Start isEmpty. Operand 62901 states and 88449 transitions. [2021-11-07 13:25:54,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-07 13:25:54,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:25:54,863 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:25:54,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 13:25:55,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-07 13:25:55,072 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 13:25:55,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:25:55,072 INFO L85 PathProgramCache]: Analyzing trace with hash -402126144, now seen corresponding path program 1 times [2021-11-07 13:25:55,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:25:55,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915995770] [2021-11-07 13:25:55,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:25:55,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:25:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:25:55,368 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:25:55,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:25:55,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915995770] [2021-11-07 13:25:55,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915995770] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:25:55,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238395996] [2021-11-07 13:25:55,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:25:55,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:25:55,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:25:55,370 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 13:25:55,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 13:26:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:26:01,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 3300 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-07 13:26:01,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:26:02,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-07 13:26:02,604 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:26:02,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 13:26:02,746 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-07 13:26:02,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-07 13:26:03,315 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:26:03,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238395996] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 13:26:03,316 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 13:26:03,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 20 [2021-11-07 13:26:03,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665601280] [2021-11-07 13:26:03,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 13:26:03,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 13:26:03,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:26:03,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 13:26:03,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-11-07 13:26:03,318 INFO L87 Difference]: Start difference. First operand 62901 states and 88449 transitions. Second operand has 21 states, 21 states have (on average 10.666666666666666) internal successors, (224), 20 states have internal predecessors, (224), 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) [2021-11-07 13:26:04,714 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:26:06,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:26:08,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:26:10,880 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:26:13,824 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 [] [2021-11-07 13:27:12,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:27:12,184 INFO L93 Difference]: Finished difference Result 663607 states and 951319 transitions. [2021-11-07 13:27:12,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-07 13:27:12,185 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.666666666666666) internal successors, (224), 20 states have internal predecessors, (224), 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 167 [2021-11-07 13:27:12,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:27:14,042 INFO L225 Difference]: With dead ends: 663607 [2021-11-07 13:27:14,042 INFO L226 Difference]: Without dead ends: 600961 [2021-11-07 13:27:14,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1461 ImplicationChecksByTransitivity, 1014.66ms TimeCoverageRelationStatistics Valid=1169, Invalid=3943, Unknown=0, NotChecked=0, Total=5112 [2021-11-07 13:27:14,312 INFO L933 BasicCegarLoop]: 36524 mSDtfsCounter, 227311 mSDsluCounter, 416107 mSDsCounter, 0 mSdLazyCounter, 28187 mSolverCounterSat, 2124 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43567.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 227316 SdHoareTripleChecker+Valid, 452631 SdHoareTripleChecker+Invalid, 30315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 637.27ms SdHoareTripleChecker+Time, 2124 IncrementalHoareTripleChecker+Valid, 28187 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47933.70ms IncrementalHoareTripleChecker+Time [2021-11-07 13:27:14,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227316 Valid, 452631 Invalid, 30315 Unknown, 0 Unchecked, 637.27ms Time], IncrementalHoareTripleChecker [2124 Valid, 28187 Invalid, 4 Unknown, 0 Unchecked, 47933.70ms Time] [2021-11-07 13:27:15,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600961 states.