./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 173e3943 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-dev-173e394 [2021-11-06 14:52:28,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:52:28,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:52:28,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:52:28,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:52:28,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:52:28,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:52:28,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:52:28,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:52:28,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:52:28,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:52:28,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:52:28,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:52:28,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:52:28,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:52:28,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:52:28,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:52:28,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:52:28,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:52:28,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:52:28,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:52:28,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:52:28,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:52:28,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:52:28,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:52:28,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:52:28,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:52:28,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:52:28,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:52:28,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:52:28,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:52:28,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:52:28,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:52:28,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:52:28,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:52:28,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:52:28,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:52:28,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:52:28,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:52:28,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:52:28,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:52:28,282 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:52:28,310 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:52:28,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:52:28,311 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:52:28,311 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:52:28,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:52:28,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:52:28,314 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:52:28,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:52:28,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:52:28,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:52:28,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:52:28,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:52:28,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:52:28,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:52:28,316 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:52:28,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:52:28,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:52:28,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:52:28,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:52:28,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:52:28,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:52:28,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:52:28,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:52:28,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:52:28,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:52:28,318 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:52:28,318 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:52:28,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:52:28,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:52:28,319 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe313da0c6b218ced50e4197dc755b81036d59e37c56d6141b10ae8e848ca9fd [2021-11-06 14:52:28,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:52:28,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:52:28,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:52:28,619 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:52:28,620 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:52:28,621 INFO L432 ainManager$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 [2021-11-06 14:52:28,675 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ccb6e361/8bebe0472f794b98b7adc085bfb4940f/FLAG7c98dda75 [2021-11-06 14:52:29,458 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:52:29,459 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 [2021-11-06 14:52:29,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ccb6e361/8bebe0472f794b98b7adc085bfb4940f/FLAG7c98dda75 [2021-11-06 14:52:30,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ccb6e361/8bebe0472f794b98b7adc085bfb4940f [2021-11-06 14:52:30,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:52:30,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:52:30,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:52:30,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:52:30,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:52:30,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:52:30" (1/1) ... [2021-11-06 14:52:30,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4552b3d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:52:30, skipping insertion in model container [2021-11-06 14:52:30,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:52:30" (1/1) ... [2021-11-06 14:52:30,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:52:30,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:52:30,731 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5693] [2021-11-06 14:52:30,732 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] [2021-11-06 14:52:31,438 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] [2021-11-06 14:52:33,312 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-06 14:52:33,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:52:33,389 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:52:33,489 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5693] [2021-11-06 14:52:33,489 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] [2021-11-06 14:52:33,505 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] [2021-11-06 14:52:33,862 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-06 14:52:33,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:52:34,003 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:52:34,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:52:34 WrapperNode [2021-11-06 14:52:34,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:52:34,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:52:34,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:52:34,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:52:34,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:52:34" (1/1) ... [2021-11-06 14:52:34,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:52:34" (1/1) ... [2021-11-06 14:52:35,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:52:35,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:52:35,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:52:35,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:52:35,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:52:34" (1/1) ... [2021-11-06 14:52:35,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:52:34" (1/1) ... [2021-11-06 14:52:36,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:52:34" (1/1) ... [2021-11-06 14:52:36,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:52:34" (1/1) ... [2021-11-06 14:52:37,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:52:34" (1/1) ... [2021-11-06 14:52:37,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:52:34" (1/1) ... [2021-11-06 14:52:37,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:52:34" (1/1) ... [2021-11-06 14:52:37,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:52:37,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:52:37,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:52:37,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:52:37,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:52:34" (1/1) ... [2021-11-06 14:52:37,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:52:37,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:52:37,858 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) [2021-11-06 14:52:37,872 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 [2021-11-06 14:52:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-06 14:52:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 14:52:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-06 14:52:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-06 14:52:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:52:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure unix_release_sock [2021-11-06 14:52:37,900 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_release_sock [2021-11-06 14:52:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:52:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:52:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:52:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:52:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:52:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 14:52:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:52:37,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:52:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:52:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:52:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:52:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:52:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:52:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:52:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:53:02,121 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:53:02,122 INFO L299 CfgBuilder]: Removed 16976 assume(true) statements. [2021-11-06 14:53:02,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:53:02 BoogieIcfgContainer [2021-11-06 14:53:02,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:53:02,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:53:02,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:53:02,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:53:02,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:52:30" (1/3) ... [2021-11-06 14:53:02,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d70bc04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:53:02, skipping insertion in model container [2021-11-06 14:53:02,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:52:34" (2/3) ... [2021-11-06 14:53:02,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d70bc04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:53:02, skipping insertion in model container [2021-11-06 14:53:02,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:53:02" (3/3) ... [2021-11-06 14:53:02,141 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 [2021-11-06 14:53:02,146 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:53:02,146 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-06 14:53:02,236 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:53:02,241 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 [2021-11-06 14:53:02,241 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-06 14:53:02,392 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) [2021-11-06 14:53:02,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 14:53:02,415 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:53:02,415 INFO L513 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] [2021-11-06 14:53:02,417 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)] === [2021-11-06 14:53:02,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:53:02,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1034210886, now seen corresponding path program 1 times [2021-11-06 14:53:02,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:53:02,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467702759] [2021-11-06 14:53:02,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:53:02,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:53:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:53:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:53:03,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:53:03,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467702759] [2021-11-06 14:53:03,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467702759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:53:03,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:53:03,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:53:03,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352772167] [2021-11-06 14:53:03,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:53:03,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:53:03,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:53:03,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:53:03,079 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) [2021-11-06 14:53:04,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:53:04,055 INFO L93 Difference]: Finished difference Result 33694 states and 47646 transitions. [2021-11-06 14:53:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:53:04,057 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 [2021-11-06 14:53:04,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:53:04,177 INFO L225 Difference]: With dead ends: 33694 [2021-11-06 14:53:04,177 INFO L226 Difference]: Without dead ends: 21094 [2021-11-06 14:53:04,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:53:04,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21094 states. [2021-11-06 14:53:04,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21094 to 20931. [2021-11-06 14:53:05,037 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) [2021-11-06 14:53:05,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20931 states to 20931 states and 29314 transitions. [2021-11-06 14:53:05,154 INFO L78 Accepts]: Start accepts. Automaton has 20931 states and 29314 transitions. Word has length 82 [2021-11-06 14:53:05,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:53:05,155 INFO L470 AbstractCegarLoop]: Abstraction has 20931 states and 29314 transitions. [2021-11-06 14:53:05,156 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) [2021-11-06 14:53:05,156 INFO L276 IsEmpty]: Start isEmpty. Operand 20931 states and 29314 transitions. [2021-11-06 14:53:05,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 14:53:05,160 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:53:05,160 INFO L513 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] [2021-11-06 14:53:05,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:53:05,161 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)] === [2021-11-06 14:53:05,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:53:05,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2021014327, now seen corresponding path program 1 times [2021-11-06 14:53:05,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:53:05,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680513000] [2021-11-06 14:53:05,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:53:05,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:53:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:53:05,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:53:05,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:53:05,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680513000] [2021-11-06 14:53:05,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680513000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:53:05,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:53:05,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:53:05,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959799995] [2021-11-06 14:53:05,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:53:05,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:53:05,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:53:05,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:53:05,344 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) [2021-11-06 14:53:06,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:53:06,504 INFO L93 Difference]: Finished difference Result 55529 states and 77909 transitions. [2021-11-06 14:53:06,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:53:06,506 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 [2021-11-06 14:53:06,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:53:06,666 INFO L225 Difference]: With dead ends: 55529 [2021-11-06 14:53:06,667 INFO L226 Difference]: Without dead ends: 34853 [2021-11-06 14:53:06,721 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:53:06,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34853 states. [2021-11-06 14:53:07,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34853 to 34782. [2021-11-06 14:53:07,550 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) [2021-11-06 14:53:07,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34782 states to 34782 states and 48807 transitions. [2021-11-06 14:53:07,652 INFO L78 Accepts]: Start accepts. Automaton has 34782 states and 48807 transitions. Word has length 83 [2021-11-06 14:53:07,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:53:07,654 INFO L470 AbstractCegarLoop]: Abstraction has 34782 states and 48807 transitions. [2021-11-06 14:53:07,655 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) [2021-11-06 14:53:07,655 INFO L276 IsEmpty]: Start isEmpty. Operand 34782 states and 48807 transitions. [2021-11-06 14:53:07,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-06 14:53:07,658 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:53:07,659 INFO L513 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] [2021-11-06 14:53:07,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:53:07,664 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)] === [2021-11-06 14:53:07,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:53:07,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1164295681, now seen corresponding path program 1 times [2021-11-06 14:53:07,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:53:07,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225513068] [2021-11-06 14:53:07,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:53:07,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:53:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:53:07,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:53:07,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:53:07,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225513068] [2021-11-06 14:53:07,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225513068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:53:07,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:53:07,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:53:07,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633943686] [2021-11-06 14:53:07,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:53:07,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:53:07,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:53:07,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:53:07,899 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) [2021-11-06 14:53:09,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:53:09,244 INFO L93 Difference]: Finished difference Result 87943 states and 123567 transitions. [2021-11-06 14:53:09,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:53:09,245 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 [2021-11-06 14:53:09,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:53:09,480 INFO L225 Difference]: With dead ends: 87943 [2021-11-06 14:53:09,480 INFO L226 Difference]: Without dead ends: 53416 [2021-11-06 14:53:09,722 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:53:09,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53416 states. [2021-11-06 14:53:11,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53416 to 53402. [2021-11-06 14:53:11,188 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) [2021-11-06 14:53:11,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53402 states to 53402 states and 75032 transitions. [2021-11-06 14:53:11,402 INFO L78 Accepts]: Start accepts. Automaton has 53402 states and 75032 transitions. Word has length 89 [2021-11-06 14:53:11,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:53:11,404 INFO L470 AbstractCegarLoop]: Abstraction has 53402 states and 75032 transitions. [2021-11-06 14:53:11,404 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) [2021-11-06 14:53:11,404 INFO L276 IsEmpty]: Start isEmpty. Operand 53402 states and 75032 transitions. [2021-11-06 14:53:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-06 14:53:11,416 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:53:11,416 INFO L513 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] [2021-11-06 14:53:11,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:53:11,417 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)] === [2021-11-06 14:53:11,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:53:11,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1334107731, now seen corresponding path program 1 times [2021-11-06 14:53:11,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:53:11,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243261794] [2021-11-06 14:53:11,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:53:11,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:53:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:53:11,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:53:11,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:53:11,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243261794] [2021-11-06 14:53:11,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243261794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:53:11,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:53:11,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:53:11,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161908713] [2021-11-06 14:53:11,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:53:11,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:53:11,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:53:11,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:53:11,780 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) [2021-11-06 14:53:13,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:53:13,688 INFO L93 Difference]: Finished difference Result 82828 states and 117761 transitions. [2021-11-06 14:53:13,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:53:13,690 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 [2021-11-06 14:53:13,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:53:14,025 INFO L225 Difference]: With dead ends: 82828 [2021-11-06 14:53:14,025 INFO L226 Difference]: Without dead ends: 82806 [2021-11-06 14:53:14,067 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:53:14,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82806 states. [2021-11-06 14:53:15,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82806 to 63005. [2021-11-06 14:53:15,690 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) [2021-11-06 14:53:15,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63005 states to 63005 states and 88585 transitions. [2021-11-06 14:53:15,906 INFO L78 Accepts]: Start accepts. Automaton has 63005 states and 88585 transitions. Word has length 149 [2021-11-06 14:53:15,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:53:15,908 INFO L470 AbstractCegarLoop]: Abstraction has 63005 states and 88585 transitions. [2021-11-06 14:53:15,908 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) [2021-11-06 14:53:15,908 INFO L276 IsEmpty]: Start isEmpty. Operand 63005 states and 88585 transitions. [2021-11-06 14:53:16,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-06 14:53:16,172 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:53:16,173 INFO L513 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] [2021-11-06 14:53:16,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:53:16,173 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)] === [2021-11-06 14:53:16,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:53:16,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1674999198, now seen corresponding path program 1 times [2021-11-06 14:53:16,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:53:16,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528150034] [2021-11-06 14:53:16,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:53:16,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:53:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:53:16,405 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 14:53:16,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:53:16,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528150034] [2021-11-06 14:53:16,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528150034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:53:16,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:53:16,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:53:16,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403737310] [2021-11-06 14:53:16,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:53:16,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:53:16,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:53:16,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:53:16,409 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) [2021-11-06 14:53:20,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:53:20,864 INFO L93 Difference]: Finished difference Result 188497 states and 265173 transitions. [2021-11-06 14:53:20,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:53:20,864 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 [2021-11-06 14:53:20,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:53:21,258 INFO L225 Difference]: With dead ends: 188497 [2021-11-06 14:53:21,259 INFO L226 Difference]: Without dead ends: 125747 [2021-11-06 14:53:21,364 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:53:21,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125747 states. [2021-11-06 14:53:23,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125747 to 63013. [2021-11-06 14:53:23,283 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) [2021-11-06 14:53:23,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63013 states to 63013 states and 88593 transitions. [2021-11-06 14:53:23,423 INFO L78 Accepts]: Start accepts. Automaton has 63013 states and 88593 transitions. Word has length 165 [2021-11-06 14:53:23,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:53:23,424 INFO L470 AbstractCegarLoop]: Abstraction has 63013 states and 88593 transitions. [2021-11-06 14:53:23,424 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) [2021-11-06 14:53:23,424 INFO L276 IsEmpty]: Start isEmpty. Operand 63013 states and 88593 transitions. [2021-11-06 14:53:23,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-06 14:53:23,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:53:23,454 INFO L513 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] [2021-11-06 14:53:23,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 14:53:23,455 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)] === [2021-11-06 14:53:23,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:53:23,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1540985692, now seen corresponding path program 1 times [2021-11-06 14:53:23,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:53:23,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71445727] [2021-11-06 14:53:23,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:53:23,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:53:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:53:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:53:23,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:53:23,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71445727] [2021-11-06 14:53:23,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71445727] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:53:23,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110331027] [2021-11-06 14:53:23,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:53:23,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:53:23,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:53:23,916 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) [2021-11-06 14:53:23,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 14:53:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:53:25,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 3275 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 14:53:25,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:53:25,818 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:53:25,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110331027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:53:25,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:53:25,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2021-11-06 14:53:25,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099638784] [2021-11-06 14:53:25,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:53:25,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:53:25,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:53:25,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-11-06 14:53:25,820 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) [2021-11-06 14:53:29,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:53:29,749 INFO L93 Difference]: Finished difference Result 125837 states and 176985 transitions. [2021-11-06 14:53:29,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 14:53:29,749 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 [2021-11-06 14:53:29,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:53:29,925 INFO L225 Difference]: With dead ends: 125837 [2021-11-06 14:53:29,925 INFO L226 Difference]: Without dead ends: 62999 [2021-11-06 14:53:30,236 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-06 14:53:30,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62999 states. [2021-11-06 14:53:31,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62999 to 62901. [2021-11-06 14:53:31,813 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) [2021-11-06 14:53:31,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62901 states to 62901 states and 88449 transitions. [2021-11-06 14:53:31,936 INFO L78 Accepts]: Start accepts. Automaton has 62901 states and 88449 transitions. Word has length 165 [2021-11-06 14:53:31,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:53:31,936 INFO L470 AbstractCegarLoop]: Abstraction has 62901 states and 88449 transitions. [2021-11-06 14:53:31,936 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) [2021-11-06 14:53:31,936 INFO L276 IsEmpty]: Start isEmpty. Operand 62901 states and 88449 transitions. [2021-11-06 14:53:31,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-06 14:53:31,960 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:53:31,960 INFO L513 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] [2021-11-06 14:53:31,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 14:53:32,169 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 [2021-11-06 14:53:32,170 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)] === [2021-11-06 14:53:32,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:53:32,170 INFO L85 PathProgramCache]: Analyzing trace with hash -402126144, now seen corresponding path program 1 times [2021-11-06 14:53:32,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:53:32,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233324885] [2021-11-06 14:53:32,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:53:32,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:53:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:53:32,592 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:53:32,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:53:32,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233324885] [2021-11-06 14:53:32,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233324885] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:53:32,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28442691] [2021-11-06 14:53:32,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:53:32,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:53:32,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:53:32,594 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) [2021-11-06 14:53:32,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 14:53:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:53:39,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 3300 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-06 14:53:39,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:53:40,577 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 [2021-11-06 14:53:40,596 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:53:40,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28442691] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:53:40,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:53:40,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-11-06 14:53:40,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542115880] [2021-11-06 14:53:40,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-06 14:53:40,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:53:40,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-06 14:53:40,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-11-06 14:53:40,599 INFO L87 Difference]: Start difference. First operand 62901 states and 88449 transitions. Second operand has 17 states, 17 states have (on average 12.0) internal successors, (204), 16 states have internal predecessors, (204), 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) [2021-11-06 14:54:34,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:54:34,185 INFO L93 Difference]: Finished difference Result 510209 states and 725653 transitions. [2021-11-06 14:54:34,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-06 14:54:34,186 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 12.0) internal successors, (204), 16 states have internal predecessors, (204), 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 [2021-11-06 14:54:34,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:54:36,049 INFO L225 Difference]: With dead ends: 510209 [2021-11-06 14:54:36,049 INFO L226 Difference]: Without dead ends: 447563 [2021-11-06 14:54:36,289 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=405, Invalid=1155, Unknown=0, NotChecked=0, Total=1560 [2021-11-06 14:54:36,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447563 states.