./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.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-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.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 ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 14:01:16,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 14:01:16,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 14:01:16,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 14:01:16,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 14:01:16,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 14:01:16,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 14:01:16,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 14:01:16,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 14:01:16,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 14:01:16,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 14:01:16,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 14:01:16,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 14:01:16,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 14:01:16,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 14:01:16,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 14:01:16,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 14:01:16,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 14:01:16,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 14:01:16,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 14:01:16,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 14:01:16,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 14:01:16,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 14:01:16,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 14:01:16,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 14:01:16,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 14:01:16,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 14:01:16,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 14:01:16,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 14:01:16,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 14:01:16,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 14:01:16,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 14:01:16,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 14:01:16,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 14:01:16,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 14:01:16,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 14:01:16,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 14:01:16,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 14:01:16,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 14:01:16,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 14:01:16,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 14:01:17,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 14:01:17,013 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 14:01:17,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 14:01:17,013 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 14:01:17,013 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 14:01:17,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 14:01:17,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 14:01:17,014 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 14:01:17,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 14:01:17,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 14:01:17,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 14:01:17,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 14:01:17,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 14:01:17,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 14:01:17,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 14:01:17,015 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 14:01:17,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 14:01:17,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 14:01:17,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 14:01:17,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 14:01:17,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:01:17,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 14:01:17,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 14:01:17,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 14:01:17,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 14:01:17,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 14:01:17,017 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 14:01:17,017 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 14:01:17,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 14:01:17,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 14:01:17,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b [2021-11-07 14:01:17,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 14:01:17,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 14:01:17,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 14:01:17,164 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 14:01:17,165 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 14:01:17,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 14:01:17,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed2e29b33/2abfc987b65b4ac5875c61278ce71a69/FLAG24e55c7da [2021-11-07 14:01:17,850 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 14:01:17,850 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 14:01:17,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed2e29b33/2abfc987b65b4ac5875c61278ce71a69/FLAG24e55c7da [2021-11-07 14:01:18,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed2e29b33/2abfc987b65b4ac5875c61278ce71a69 [2021-11-07 14:01:18,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 14:01:18,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 14:01:18,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 14:01:18,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 14:01:18,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 14:01:18,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:18" (1/1) ... [2021-11-07 14:01:18,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@607bdc97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:18, skipping insertion in model container [2021-11-07 14:01:18,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:18" (1/1) ... [2021-11-07 14:01:18,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 14:01:18,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 14:01:19,126 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-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i[218543,218556] [2021-11-07 14:01:19,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:01:19,176 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 14:01:19,472 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-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i[218543,218556] [2021-11-07 14:01:19,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:01:19,537 INFO L208 MainTranslator]: Completed translation [2021-11-07 14:01:19,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19 WrapperNode [2021-11-07 14:01:19,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 14:01:19,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 14:01:19,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 14:01:19,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 14:01:19,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 14:01:19,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 14:01:20,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 14:01:20,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 14:01:20,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 14:01:20,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 14:01:20,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 14:01:20,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 14:01:20,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 14:01:20,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 14:01:21,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 14:01:21,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 14:01:21,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 14:01:21,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 14:01:21,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 14:01:21,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 14:01:21,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 14:01:21,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 14:01:21,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:01:21,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:01:21,557 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 14:01:21,638 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 14:01:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 14:01:21,671 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-07 14:01:21,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 14:01:21,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 14:01:21,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 14:01:21,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 14:01:21,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 14:01:21,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 14:01:21,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 14:01:21,672 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 14:01:21,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 14:01:21,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 14:01:21,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 14:01:21,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 14:01:21,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 14:01:21,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 14:01:21,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 14:04:42,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 14:04:42,261 INFO L299 CfgBuilder]: Removed 5913 assume(true) statements. [2021-11-07 14:04:42,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:04:42 BoogieIcfgContainer [2021-11-07 14:04:42,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 14:04:42,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 14:04:42,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 14:04:42,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 14:04:42,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:01:18" (1/3) ... [2021-11-07 14:04:42,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e54de87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:04:42, skipping insertion in model container [2021-11-07 14:04:42,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (2/3) ... [2021-11-07 14:04:42,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e54de87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:04:42, skipping insertion in model container [2021-11-07 14:04:42,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:04:42" (3/3) ... [2021-11-07 14:04:42,271 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 14:04:42,278 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 14:04:42,278 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 14:04:42,339 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 14:04:42,343 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 14:04:42,344 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 14:04:42,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 6793 states, 6788 states have (on average 1.459634649381261) internal successors, (9908), 6792 states have internal predecessors, (9908), 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 14:04:42,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 14:04:42,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:04:42,473 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] [2021-11-07 14:04:42,474 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:04:42,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:04:42,477 INFO L85 PathProgramCache]: Analyzing trace with hash -597361012, now seen corresponding path program 1 times [2021-11-07 14:04:42,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:04:42,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90636202] [2021-11-07 14:04:42,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:04:42,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:04:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:04:43,076 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 14:04:43,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:04:43,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90636202] [2021-11-07 14:04:43,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90636202] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:04:43,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:04:43,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:04:43,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935696996] [2021-11-07 14:04:43,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:04:43,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 14:04:43,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:04:43,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 14:04:43,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 14:04:43,112 INFO L87 Difference]: Start difference. First operand has 6793 states, 6788 states have (on average 1.459634649381261) internal successors, (9908), 6792 states have internal predecessors, (9908), 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) Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 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 14:04:43,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:04:43,272 INFO L93 Difference]: Finished difference Result 13582 states and 19811 transitions. [2021-11-07 14:04:43,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 14:04:43,274 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 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 67 [2021-11-07 14:04:43,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:04:43,307 INFO L225 Difference]: With dead ends: 13582 [2021-11-07 14:04:43,307 INFO L226 Difference]: Without dead ends: 6781 [2021-11-07 14:04:43,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 14:04:43,326 INFO L933 BasicCegarLoop]: 9701 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9701 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.54ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 14:04:43,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9701 Invalid, 0 Unknown, 0 Unchecked, 12.54ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 14:04:43,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6781 states. [2021-11-07 14:04:43,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6781 to 6781. [2021-11-07 14:04:43,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6781 states, 6777 states have (on average 1.428655747380847) internal successors, (9682), 6780 states have internal predecessors, (9682), 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 14:04:43,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6781 states to 6781 states and 9682 transitions. [2021-11-07 14:04:43,481 INFO L78 Accepts]: Start accepts. Automaton has 6781 states and 9682 transitions. Word has length 67 [2021-11-07 14:04:43,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:04:43,481 INFO L470 AbstractCegarLoop]: Abstraction has 6781 states and 9682 transitions. [2021-11-07 14:04:43,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 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 14:04:43,482 INFO L276 IsEmpty]: Start isEmpty. Operand 6781 states and 9682 transitions. [2021-11-07 14:04:43,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 14:04:43,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:04:43,488 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] [2021-11-07 14:04:43,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 14:04:43,488 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:04:43,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:04:43,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1226720446, now seen corresponding path program 1 times [2021-11-07 14:04:43,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:04:43,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589399218] [2021-11-07 14:04:43,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:04:43,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:04:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:04:43,832 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 14:04:43,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:04:43,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589399218] [2021-11-07 14:04:43,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589399218] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:04:43,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:04:43,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:04:43,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470741016] [2021-11-07 14:04:43,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:04:43,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:04:43,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:04:43,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:04:43,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:04:43,835 INFO L87 Difference]: Start difference. First operand 6781 states and 9682 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 14:04:45,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:04:46,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:04:46,320 INFO L93 Difference]: Finished difference Result 20143 states and 28812 transitions. [2021-11-07 14:04:46,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:04:46,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2021-11-07 14:04:46,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:04:46,357 INFO L225 Difference]: With dead ends: 20143 [2021-11-07 14:04:46,357 INFO L226 Difference]: Without dead ends: 13421 [2021-11-07 14:04:46,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.06ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:04:46,555 INFO L933 BasicCegarLoop]: 9679 mSDtfsCounter, 9553 mSDsluCounter, 9631 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2134.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9553 SdHoareTripleChecker+Valid, 19310 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.68ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2256.88ms IncrementalHoareTripleChecker+Time [2021-11-07 14:04:46,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9553 Valid, 19310 Invalid, 13 Unknown, 0 Unchecked, 24.68ms Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 2256.88ms Time] [2021-11-07 14:04:46,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13421 states. [2021-11-07 14:04:46,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13421 to 13421. [2021-11-07 14:04:46,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13421 states, 13417 states have (on average 1.4308712827010508) internal successors, (19198), 13420 states have internal predecessors, (19198), 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 14:04:46,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13421 states to 13421 states and 19198 transitions. [2021-11-07 14:04:46,783 INFO L78 Accepts]: Start accepts. Automaton has 13421 states and 19198 transitions. Word has length 67 [2021-11-07 14:04:46,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:04:46,785 INFO L470 AbstractCegarLoop]: Abstraction has 13421 states and 19198 transitions. [2021-11-07 14:04:46,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 14:04:46,788 INFO L276 IsEmpty]: Start isEmpty. Operand 13421 states and 19198 transitions. [2021-11-07 14:04:46,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 14:04:46,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:04:46,792 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] [2021-11-07 14:04:46,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 14:04:46,793 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:04:46,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:04:46,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2061512005, now seen corresponding path program 1 times [2021-11-07 14:04:46,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:04:46,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004156580] [2021-11-07 14:04:46,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:04:46,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:04:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:04:47,120 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 14:04:47,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:04:47,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004156580] [2021-11-07 14:04:47,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004156580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:04:47,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:04:47,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:04:47,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002419959] [2021-11-07 14:04:47,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:04:47,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:04:47,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:04:47,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:04:47,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:04:47,121 INFO L87 Difference]: Start difference. First operand 13421 states and 19198 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 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 14:04:47,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:04:47,483 INFO L93 Difference]: Finished difference Result 26779 states and 38322 transitions. [2021-11-07 14:04:47,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:04:47,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 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 79 [2021-11-07 14:04:47,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:04:47,552 INFO L225 Difference]: With dead ends: 26779 [2021-11-07 14:04:47,553 INFO L226 Difference]: Without dead ends: 26768 [2021-11-07 14:04:47,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:04:47,569 INFO L933 BasicCegarLoop]: 9684 mSDtfsCounter, 9595 mSDsluCounter, 9601 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9595 SdHoareTripleChecker+Valid, 19285 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.57ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.99ms IncrementalHoareTripleChecker+Time [2021-11-07 14:04:47,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9595 Valid, 19285 Invalid, 13 Unknown, 0 Unchecked, 26.57ms Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 40.99ms Time] [2021-11-07 14:04:47,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26768 states. [2021-11-07 14:04:47,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26768 to 26768. [2021-11-07 14:04:47,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26768 states, 26765 states have (on average 1.4313469082757333) internal successors, (38310), 26767 states have internal predecessors, (38310), 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 14:04:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26768 states to 26768 states and 38310 transitions. [2021-11-07 14:04:48,053 INFO L78 Accepts]: Start accepts. Automaton has 26768 states and 38310 transitions. Word has length 79 [2021-11-07 14:04:48,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:04:48,055 INFO L470 AbstractCegarLoop]: Abstraction has 26768 states and 38310 transitions. [2021-11-07 14:04:48,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 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 14:04:48,056 INFO L276 IsEmpty]: Start isEmpty. Operand 26768 states and 38310 transitions. [2021-11-07 14:04:48,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 14:04:48,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:04:48,061 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] [2021-11-07 14:04:48,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 14:04:48,061 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:04:48,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:04:48,062 INFO L85 PathProgramCache]: Analyzing trace with hash 708206509, now seen corresponding path program 1 times [2021-11-07 14:04:48,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:04:48,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318794611] [2021-11-07 14:04:48,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:04:48,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:04:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:04:48,518 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 14:04:48,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:04:48,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318794611] [2021-11-07 14:04:48,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318794611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:04:48,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:04:48,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 14:04:48,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263983763] [2021-11-07 14:04:48,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:04:48,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 14:04:48,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:04:48,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 14:04:48,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 14:04:48,520 INFO L87 Difference]: Start difference. First operand 26768 states and 38310 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 14:04:50,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:04:50,240 INFO L93 Difference]: Finished difference Result 120142 states and 172012 transitions. [2021-11-07 14:04:50,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 14:04:50,241 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 85 [2021-11-07 14:04:50,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:04:50,430 INFO L225 Difference]: With dead ends: 120142 [2021-11-07 14:04:50,430 INFO L226 Difference]: Without dead ends: 93433 [2021-11-07 14:04:50,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 334.43ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-07 14:04:50,503 INFO L933 BasicCegarLoop]: 19260 mSDtfsCounter, 76626 mSDsluCounter, 76954 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 154.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 76626 SdHoareTripleChecker+Valid, 96214 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 96.07ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 161.75ms IncrementalHoareTripleChecker+Time [2021-11-07 14:04:50,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76626 Valid, 96214 Invalid, 37 Unknown, 0 Unchecked, 96.07ms Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 161.75ms Time] [2021-11-07 14:04:50,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93433 states. [2021-11-07 14:04:51,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93433 to 26772. [2021-11-07 14:04:51,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26772 states, 26769 states have (on average 1.43128245358437) internal successors, (38314), 26771 states have internal predecessors, (38314), 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 14:04:51,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26772 states to 26772 states and 38314 transitions. [2021-11-07 14:04:51,613 INFO L78 Accepts]: Start accepts. Automaton has 26772 states and 38314 transitions. Word has length 85 [2021-11-07 14:04:51,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:04:51,614 INFO L470 AbstractCegarLoop]: Abstraction has 26772 states and 38314 transitions. [2021-11-07 14:04:51,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 14:04:51,614 INFO L276 IsEmpty]: Start isEmpty. Operand 26772 states and 38314 transitions. [2021-11-07 14:04:51,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 14:04:51,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:04:51,627 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:04:51,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 14:04:51,628 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:04:51,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:04:51,628 INFO L85 PathProgramCache]: Analyzing trace with hash -593319977, now seen corresponding path program 1 times [2021-11-07 14:04:51,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:04:51,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806658822] [2021-11-07 14:04:51,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:04:51,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:04:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:04:52,105 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:04:52,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:04:52,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806658822] [2021-11-07 14:04:52,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806658822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:04:52,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:04:52,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 14:04:52,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866467008] [2021-11-07 14:04:52,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:04:52,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:04:52,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:04:52,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:04:52,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 14:04:52,107 INFO L87 Difference]: Start difference. First operand 26772 states and 38314 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 14:04:53,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:04:53,010 INFO L93 Difference]: Finished difference Result 60216 states and 86174 transitions. [2021-11-07 14:04:53,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 14:04:53,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 105 [2021-11-07 14:04:53,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:04:53,056 INFO L225 Difference]: With dead ends: 60216 [2021-11-07 14:04:53,056 INFO L226 Difference]: Without dead ends: 33503 [2021-11-07 14:04:53,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 83.50ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:04:53,085 INFO L933 BasicCegarLoop]: 19237 mSDtfsCounter, 19242 mSDsluCounter, 9672 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19242 SdHoareTripleChecker+Valid, 28909 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.58ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 147.44ms IncrementalHoareTripleChecker+Time [2021-11-07 14:04:53,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19242 Valid, 28909 Invalid, 13 Unknown, 0 Unchecked, 27.58ms Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 147.44ms Time] [2021-11-07 14:04:53,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33503 states. [2021-11-07 14:04:53,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33503 to 20132. [2021-11-07 14:04:53,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20132 states, 20129 states have (on average 1.4305728054051368) internal successors, (28796), 20131 states have internal predecessors, (28796), 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 14:04:53,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20132 states to 20132 states and 28796 transitions. [2021-11-07 14:04:53,504 INFO L78 Accepts]: Start accepts. Automaton has 20132 states and 28796 transitions. Word has length 105 [2021-11-07 14:04:53,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:04:53,504 INFO L470 AbstractCegarLoop]: Abstraction has 20132 states and 28796 transitions. [2021-11-07 14:04:53,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 14:04:53,505 INFO L276 IsEmpty]: Start isEmpty. Operand 20132 states and 28796 transitions. [2021-11-07 14:04:53,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-07 14:04:53,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:04:53,517 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:04:53,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 14:04:53,517 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:04:53,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:04:53,518 INFO L85 PathProgramCache]: Analyzing trace with hash 961569095, now seen corresponding path program 1 times [2021-11-07 14:04:53,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:04:53,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66036617] [2021-11-07 14:04:53,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:04:53,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:04:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:04:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 14:04:54,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:04:54,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66036617] [2021-11-07 14:04:54,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66036617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:04:54,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:04:54,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:04:54,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878092031] [2021-11-07 14:04:54,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:04:54,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:04:54,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:04:54,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:04:54,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:04:54,143 INFO L87 Difference]: Start difference. First operand 20132 states and 28796 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:04:54,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:04:54,885 INFO L93 Difference]: Finished difference Result 40250 states and 57587 transitions. [2021-11-07 14:04:54,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:04:54,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-07 14:04:54,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:04:54,915 INFO L225 Difference]: With dead ends: 40250 [2021-11-07 14:04:54,916 INFO L226 Difference]: Without dead ends: 20142 [2021-11-07 14:04:54,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:04:54,939 INFO L933 BasicCegarLoop]: 9667 mSDtfsCounter, 0 mSDsluCounter, 9605 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 399.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19272 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.85ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 442.74ms IncrementalHoareTripleChecker+Time [2021-11-07 14:04:54,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19272 Invalid, 90 Unknown, 0 Unchecked, 7.85ms Time], IncrementalHoareTripleChecker [18 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 442.74ms Time] [2021-11-07 14:04:54,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20142 states. [2021-11-07 14:04:55,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20142 to 20142. [2021-11-07 14:04:55,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20142 states, 20139 states have (on average 1.430359004915835) internal successors, (28806), 20141 states have internal predecessors, (28806), 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 14:04:55,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20142 states to 20142 states and 28806 transitions. [2021-11-07 14:04:55,403 INFO L78 Accepts]: Start accepts. Automaton has 20142 states and 28806 transitions. Word has length 130 [2021-11-07 14:04:55,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:04:55,403 INFO L470 AbstractCegarLoop]: Abstraction has 20142 states and 28806 transitions. [2021-11-07 14:04:55,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:04:55,404 INFO L276 IsEmpty]: Start isEmpty. Operand 20142 states and 28806 transitions. [2021-11-07 14:04:55,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 14:04:55,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:04:55,417 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:04:55,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 14:04:55,417 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:04:55,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:04:55,418 INFO L85 PathProgramCache]: Analyzing trace with hash 866099111, now seen corresponding path program 1 times [2021-11-07 14:04:55,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:04:55,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142021415] [2021-11-07 14:04:55,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:04:55,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:04:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:04:56,034 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 14:04:56,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:04:56,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142021415] [2021-11-07 14:04:56,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142021415] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:04:56,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58592962] [2021-11-07 14:04:56,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:04:56,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:04:56,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:04:56,037 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 14:04:56,040 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 14:04:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:04:57,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 5181 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 14:04:57,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:04:59,838 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 14:04:59,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 14:04:59,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58592962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:04:59,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 14:04:59,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-07 14:04:59,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541874341] [2021-11-07 14:04:59,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:04:59,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:04:59,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:04:59,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:04:59,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 14:04:59,839 INFO L87 Difference]: Start difference. First operand 20142 states and 28806 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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 14:05:00,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:00,473 INFO L93 Difference]: Finished difference Result 33577 states and 48017 transitions. [2021-11-07 14:05:00,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 14:05:00,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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 140 [2021-11-07 14:05:00,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:00,506 INFO L225 Difference]: With dead ends: 33577 [2021-11-07 14:05:00,506 INFO L226 Difference]: Without dead ends: 20144 [2021-11-07 14:05:00,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 290.89ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 14:05:00,519 INFO L933 BasicCegarLoop]: 19190 mSDtfsCounter, 19194 mSDsluCounter, 9592 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19194 SdHoareTripleChecker+Valid, 28782 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.22ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:00,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19194 Valid, 28782 Invalid, 5 Unknown, 0 Unchecked, 23.80ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 42.22ms Time] [2021-11-07 14:05:00,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20144 states. [2021-11-07 14:05:00,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20144 to 20142. [2021-11-07 14:05:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20142 states, 20139 states have (on average 1.4302596951189235) internal successors, (28804), 20141 states have internal predecessors, (28804), 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 14:05:00,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20142 states to 20142 states and 28804 transitions. [2021-11-07 14:05:00,910 INFO L78 Accepts]: Start accepts. Automaton has 20142 states and 28804 transitions. Word has length 140 [2021-11-07 14:05:00,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:00,910 INFO L470 AbstractCegarLoop]: Abstraction has 20142 states and 28804 transitions. [2021-11-07 14:05:00,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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 14:05:00,910 INFO L276 IsEmpty]: Start isEmpty. Operand 20142 states and 28804 transitions. [2021-11-07 14:05:00,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 14:05:00,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:00,926 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:05:00,958 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 14:05:01,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:05:01,143 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:05:01,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:01,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1067923045, now seen corresponding path program 1 times [2021-11-07 14:05:01,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:01,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717076786] [2021-11-07 14:05:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:01,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 14:05:01,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:01,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717076786] [2021-11-07 14:05:01,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717076786] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:05:01,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660272334] [2021-11-07 14:05:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:01,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:05:01,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:05:01,792 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 14:05:01,793 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 14:05:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:03,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 5181 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 14:05:03,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:05:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 14:05:05,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 14:05:05,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660272334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:05:05,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 14:05:05,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-07 14:05:05,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990592586] [2021-11-07 14:05:05,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:05:05,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:05:05,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:05:05,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:05:05,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 14:05:05,439 INFO L87 Difference]: Start difference. First operand 20142 states and 28804 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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 14:05:06,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:06,156 INFO L93 Difference]: Finished difference Result 33577 states and 48013 transitions. [2021-11-07 14:05:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 14:05:06,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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 140 [2021-11-07 14:05:06,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:06,202 INFO L225 Difference]: With dead ends: 33577 [2021-11-07 14:05:06,223 INFO L226 Difference]: Without dead ends: 20144 [2021-11-07 14:05:06,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 274.56ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 14:05:06,257 INFO L933 BasicCegarLoop]: 19189 mSDtfsCounter, 19201 mSDsluCounter, 9586 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19201 SdHoareTripleChecker+Valid, 28775 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.27ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.06ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:06,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19201 Valid, 28775 Invalid, 5 Unknown, 0 Unchecked, 23.27ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 36.06ms Time] [2021-11-07 14:05:06,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20144 states. [2021-11-07 14:05:06,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20144 to 20142. [2021-11-07 14:05:06,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20142 states, 20139 states have (on average 1.430160385322012) internal successors, (28802), 20141 states have internal predecessors, (28802), 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 14:05:06,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20142 states to 20142 states and 28802 transitions. [2021-11-07 14:05:06,907 INFO L78 Accepts]: Start accepts. Automaton has 20142 states and 28802 transitions. Word has length 140 [2021-11-07 14:05:06,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:06,908 INFO L470 AbstractCegarLoop]: Abstraction has 20142 states and 28802 transitions. [2021-11-07 14:05:06,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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 14:05:06,909 INFO L276 IsEmpty]: Start isEmpty. Operand 20142 states and 28802 transitions. [2021-11-07 14:05:06,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 14:05:06,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:06,919 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:05:06,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 14:05:07,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-07 14:05:07,143 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:05:07,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:07,144 INFO L85 PathProgramCache]: Analyzing trace with hash 650526439, now seen corresponding path program 1 times [2021-11-07 14:05:07,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:07,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072880825] [2021-11-07 14:05:07,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:07,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:07,668 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 14:05:07,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:07,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072880825] [2021-11-07 14:05:07,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072880825] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:05:07,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597698035] [2021-11-07 14:05:07,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:07,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:05:07,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:05:07,670 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 14:05:07,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process Killed by 15