./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--advansys.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--advansys.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7aeec7696a529cfd4fe4dd2b18db6cb21f16cff1a7793506058657f67fba4ef5 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 19:25:51,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 19:25:51,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 19:25:51,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 19:25:51,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 19:25:51,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 19:25:51,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 19:25:51,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 19:25:51,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 19:25:51,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 19:25:51,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 19:25:51,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 19:25:51,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 19:25:51,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 19:25:51,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 19:25:51,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 19:25:51,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 19:25:51,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 19:25:51,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 19:25:51,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 19:25:51,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 19:25:51,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 19:25:51,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 19:25:51,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 19:25:51,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 19:25:51,188 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 19:25:51,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 19:25:51,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 19:25:51,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 19:25:51,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 19:25:51,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 19:25:51,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 19:25:51,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 19:25:51,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 19:25:51,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 19:25:51,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 19:25:51,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 19:25:51,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 19:25:51,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 19:25:51,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 19:25:51,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 19:25:51,200 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 19:25:51,228 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 19:25:51,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 19:25:51,229 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 19:25:51,229 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 19:25:51,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 19:25:51,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 19:25:51,231 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 19:25:51,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 19:25:51,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 19:25:51,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 19:25:51,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 19:25:51,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 19:25:51,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 19:25:51,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 19:25:51,233 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 19:25:51,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 19:25:51,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 19:25:51,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 19:25:51,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 19:25:51,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:25:51,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 19:25:51,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 19:25:51,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 19:25:51,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 19:25:51,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 19:25:51,242 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 19:25:51,242 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 19:25:51,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 19:25:51,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 19:25:51,242 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aeec7696a529cfd4fe4dd2b18db6cb21f16cff1a7793506058657f67fba4ef5 [2021-11-05 19:25:51,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 19:25:51,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 19:25:51,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 19:25:51,518 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 19:25:51,518 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 19:25:51,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--advansys.ko-entry_point.cil.out.i [2021-11-05 19:25:51,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e36646f6/ddc03e0feee3449eac41d0c3c9f9ed80/FLAG19ea13f25 [2021-11-05 19:25:52,279 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 19:25:52,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--advansys.ko-entry_point.cil.out.i [2021-11-05 19:25:52,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e36646f6/ddc03e0feee3449eac41d0c3c9f9ed80/FLAG19ea13f25 [2021-11-05 19:25:52,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e36646f6/ddc03e0feee3449eac41d0c3c9f9ed80 [2021-11-05 19:25:52,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 19:25:52,360 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 19:25:52,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 19:25:52,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 19:25:52,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 19:25:52,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:25:52" (1/1) ... [2021-11-05 19:25:52,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17b1a755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:52, skipping insertion in model container [2021-11-05 19:25:52,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:25:52" (1/1) ... [2021-11-05 19:25:52,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 19:25:52,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 19:25:54,884 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--advansys.ko-entry_point.cil.out.i[434068,434081] [2021-11-05 19:25:54,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:25:54,979 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 19:25:55,516 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--advansys.ko-entry_point.cil.out.i[434068,434081] [2021-11-05 19:25:55,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:25:55,607 INFO L208 MainTranslator]: Completed translation [2021-11-05 19:25:55,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:55 WrapperNode [2021-11-05 19:25:55,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 19:25:55,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 19:25:55,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 19:25:55,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 19:25:55,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:55" (1/1) ... [2021-11-05 19:25:55,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:55" (1/1) ... [2021-11-05 19:25:59,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 19:25:59,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 19:25:59,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 19:25:59,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 19:25:59,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:55" (1/1) ... [2021-11-05 19:25:59,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:55" (1/1) ... [2021-11-05 19:26:00,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:55" (1/1) ... [2021-11-05 19:26:00,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:55" (1/1) ... [2021-11-05 19:26:01,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:55" (1/1) ... [2021-11-05 19:26:01,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:55" (1/1) ... [2021-11-05 19:26:02,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:55" (1/1) ... [2021-11-05 19:26:02,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 19:26:02,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 19:26:02,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 19:26:02,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 19:26:02,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:55" (1/1) ... [2021-11-05 19:26:02,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:26:02,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:26:02,617 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) [2021-11-05 19:26:02,636 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 [2021-11-05 19:26:02,648 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-05 19:26:02,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 19:26:02,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 19:26:02,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 19:26:02,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 19:26:02,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 19:26:02,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 19:26:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 19:26:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 19:26:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 19:26:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 19:26:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 19:26:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 19:26:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 19:26:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 19:26:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 19:32:42,957 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 19:32:42,958 INFO L299 CfgBuilder]: Removed 30775 assume(true) statements. [2021-11-05 19:32:42,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:32:42 BoogieIcfgContainer [2021-11-05 19:32:42,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 19:32:42,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 19:32:42,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 19:32:42,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 19:32:42,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 07:25:52" (1/3) ... [2021-11-05 19:32:42,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da7017b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:32:42, skipping insertion in model container [2021-11-05 19:32:42,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:55" (2/3) ... [2021-11-05 19:32:42,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da7017b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:32:42, skipping insertion in model container [2021-11-05 19:32:42,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:32:42" (3/3) ... [2021-11-05 19:32:42,985 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--advansys.ko-entry_point.cil.out.i [2021-11-05 19:32:42,989 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 19:32:42,989 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-05 19:32:43,079 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 19:32:43,083 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 [2021-11-05 19:32:43,084 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-05 19:32:43,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 26230 states, 26222 states have (on average 1.3154603005110213) internal successors, (34494), 26229 states have internal predecessors, (34494), 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) [2021-11-05 19:32:43,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-05 19:32:43,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:43,440 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] [2021-11-05 19:32:43,441 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 19:32:43,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:43,450 INFO L85 PathProgramCache]: Analyzing trace with hash -417480011, now seen corresponding path program 1 times [2021-11-05 19:32:43,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:43,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989982454] [2021-11-05 19:32:43,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:43,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:32:44,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:44,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989982454] [2021-11-05 19:32:44,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989982454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:44,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:32:44,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:32:44,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681128990] [2021-11-05 19:32:44,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:44,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 19:32:44,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:44,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 19:32:44,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 19:32:44,119 INFO L87 Difference]: Start difference. First operand has 26230 states, 26222 states have (on average 1.3154603005110213) internal successors, (34494), 26229 states have internal predecessors, (34494), 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 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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) [2021-11-05 19:32:44,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:44,717 INFO L93 Difference]: Finished difference Result 50824 states and 66807 transitions. [2021-11-05 19:32:44,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 19:32:44,719 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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 45 [2021-11-05 19:32:44,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:44,817 INFO L225 Difference]: With dead ends: 50824 [2021-11-05 19:32:44,818 INFO L226 Difference]: Without dead ends: 24240 [2021-11-05 19:32:44,874 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 [2021-11-05 19:32:44,878 INFO L933 BasicCegarLoop]: 31679 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, 31679 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.09ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:44,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31679 Invalid, 0 Unknown, 0 Unchecked, 62.09ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 19:32:44,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24240 states. [2021-11-05 19:32:45,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24240 to 24240. [2021-11-05 19:32:45,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24240 states, 24233 states have (on average 1.2780505921677052) internal successors, (30971), 24239 states have internal predecessors, (30971), 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) [2021-11-05 19:32:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24240 states to 24240 states and 30971 transitions. [2021-11-05 19:32:45,768 INFO L78 Accepts]: Start accepts. Automaton has 24240 states and 30971 transitions. Word has length 45 [2021-11-05 19:32:45,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:45,769 INFO L470 AbstractCegarLoop]: Abstraction has 24240 states and 30971 transitions. [2021-11-05 19:32:45,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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) [2021-11-05 19:32:45,769 INFO L276 IsEmpty]: Start isEmpty. Operand 24240 states and 30971 transitions. [2021-11-05 19:32:45,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-05 19:32:45,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:45,776 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] [2021-11-05 19:32:45,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 19:32:45,776 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 19:32:45,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:45,778 INFO L85 PathProgramCache]: Analyzing trace with hash 874923437, now seen corresponding path program 1 times [2021-11-05 19:32:45,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:45,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130737591] [2021-11-05 19:32:45,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:45,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:32:46,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:46,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130737591] [2021-11-05 19:32:46,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130737591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:46,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:32:46,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:32:46,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597468782] [2021-11-05 19:32:46,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:46,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:32:46,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:46,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:32:46,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:32:46,126 INFO L87 Difference]: Start difference. First operand 24240 states and 30971 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-05 19:32:47,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:47,464 INFO L93 Difference]: Finished difference Result 69763 states and 89174 transitions. [2021-11-05 19:32:47,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:32:47,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2021-11-05 19:32:47,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:47,575 INFO L225 Difference]: With dead ends: 69763 [2021-11-05 19:32:47,575 INFO L226 Difference]: Without dead ends: 45557 [2021-11-05 19:32:47,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:32:47,632 INFO L933 BasicCegarLoop]: 30970 mSDtfsCounter, 27300 mSDsluCounter, 30923 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27300 SdHoareTripleChecker+Valid, 61893 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.20ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 150.10ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:47,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27300 Valid, 61893 Invalid, 11 Unknown, 0 Unchecked, 79.20ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 150.10ms Time] [2021-11-05 19:32:47,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45557 states. [2021-11-05 19:32:48,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45557 to 45542. [2021-11-05 19:32:48,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45542 states, 45535 states have (on average 1.2788184912704512) internal successors, (58231), 45541 states have internal predecessors, (58231), 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) [2021-11-05 19:32:48,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45542 states to 45542 states and 58231 transitions. [2021-11-05 19:32:48,737 INFO L78 Accepts]: Start accepts. Automaton has 45542 states and 58231 transitions. Word has length 45 [2021-11-05 19:32:48,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:48,738 INFO L470 AbstractCegarLoop]: Abstraction has 45542 states and 58231 transitions. [2021-11-05 19:32:48,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-05 19:32:48,739 INFO L276 IsEmpty]: Start isEmpty. Operand 45542 states and 58231 transitions. [2021-11-05 19:32:48,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-05 19:32:48,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:48,746 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] [2021-11-05 19:32:48,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 19:32:48,747 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 19:32:48,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:48,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1968680070, now seen corresponding path program 1 times [2021-11-05 19:32:48,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:48,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536762957] [2021-11-05 19:32:48,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:48,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:32:49,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:49,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536762957] [2021-11-05 19:32:49,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536762957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:49,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:32:49,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 19:32:49,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422968015] [2021-11-05 19:32:49,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:49,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:32:49,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:49,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:32:49,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:32:49,109 INFO L87 Difference]: Start difference. First operand 45542 states and 58231 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2021-11-05 19:32:51,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:51,205 INFO L93 Difference]: Finished difference Result 157813 states and 201810 transitions. [2021-11-05 19:32:51,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 19:32:51,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 74 [2021-11-05 19:32:51,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:51,519 INFO L225 Difference]: With dead ends: 157813 [2021-11-05 19:32:51,519 INFO L226 Difference]: Without dead ends: 112305 [2021-11-05 19:32:51,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 89.96ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:32:51,644 INFO L933 BasicCegarLoop]: 89114 mSDtfsCounter, 61843 mSDsluCounter, 85466 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 61843 SdHoareTripleChecker+Valid, 174580 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 118.28ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.53ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:51,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61843 Valid, 174580 Invalid, 19 Unknown, 0 Unchecked, 118.28ms Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 76.53ms Time] [2021-11-05 19:32:51,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112305 states. [2021-11-05 19:32:53,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112305 to 45542. [2021-11-05 19:32:53,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45542 states, 45535 states have (on average 1.2787306467552433) internal successors, (58227), 45541 states have internal predecessors, (58227), 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) [2021-11-05 19:32:53,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45542 states to 45542 states and 58227 transitions. [2021-11-05 19:32:53,395 INFO L78 Accepts]: Start accepts. Automaton has 45542 states and 58227 transitions. Word has length 74 [2021-11-05 19:32:53,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:53,395 INFO L470 AbstractCegarLoop]: Abstraction has 45542 states and 58227 transitions. [2021-11-05 19:32:53,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2021-11-05 19:32:53,396 INFO L276 IsEmpty]: Start isEmpty. Operand 45542 states and 58227 transitions. [2021-11-05 19:32:53,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-05 19:32:53,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:53,407 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] [2021-11-05 19:32:53,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 19:32:53,407 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 19:32:53,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:53,408 INFO L85 PathProgramCache]: Analyzing trace with hash -388972167, now seen corresponding path program 1 times [2021-11-05 19:32:53,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:53,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469303440] [2021-11-05 19:32:53,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:53,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:53,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:32:53,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:53,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469303440] [2021-11-05 19:32:53,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469303440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:53,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:32:53,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 19:32:53,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285832399] [2021-11-05 19:32:53,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:53,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:32:53,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:53,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:32:53,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:32:53,765 INFO L87 Difference]: Start difference. First operand 45542 states and 58227 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-11-05 19:32:56,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:56,381 INFO L93 Difference]: Finished difference Result 157817 states and 201806 transitions. [2021-11-05 19:32:56,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:32:56,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 80 [2021-11-05 19:32:56,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:56,772 INFO L225 Difference]: With dead ends: 157817 [2021-11-05 19:32:56,772 INFO L226 Difference]: Without dead ends: 112309 [2021-11-05 19:32:56,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.72ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:32:56,851 INFO L933 BasicCegarLoop]: 58209 mSDtfsCounter, 92753 mSDsluCounter, 85470 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 92753 SdHoareTripleChecker+Valid, 143679 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 108.49ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.33ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:56,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92753 Valid, 143679 Invalid, 15 Unknown, 0 Unchecked, 108.49ms Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 69.33ms Time] [2021-11-05 19:32:56,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112309 states. [2021-11-05 19:32:58,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112309 to 45542. [2021-11-05 19:32:58,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45542 states, 45535 states have (on average 1.2786867244976392) internal successors, (58225), 45541 states have internal predecessors, (58225), 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) [2021-11-05 19:32:58,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45542 states to 45542 states and 58225 transitions. [2021-11-05 19:32:58,546 INFO L78 Accepts]: Start accepts. Automaton has 45542 states and 58225 transitions. Word has length 80 [2021-11-05 19:32:58,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:58,547 INFO L470 AbstractCegarLoop]: Abstraction has 45542 states and 58225 transitions. [2021-11-05 19:32:58,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-11-05 19:32:58,547 INFO L276 IsEmpty]: Start isEmpty. Operand 45542 states and 58225 transitions. [2021-11-05 19:32:58,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-05 19:32:58,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:58,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:32:58,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 19:32:58,554 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 19:32:58,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:58,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1770265138, now seen corresponding path program 1 times [2021-11-05 19:32:58,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:58,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324180763] [2021-11-05 19:32:58,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:58,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:32:58,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:58,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324180763] [2021-11-05 19:32:58,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324180763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:58,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:32:58,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:32:58,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469407336] [2021-11-05 19:32:58,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:58,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:32:58,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:58,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:32:58,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:32:58,875 INFO L87 Difference]: Start difference. First operand 45542 states and 58225 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:33:01,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:33:01,252 INFO L93 Difference]: Finished difference Result 128296 states and 163910 transitions. [2021-11-05 19:33:01,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:33:01,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-05 19:33:01,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:33:01,402 INFO L225 Difference]: With dead ends: 128296 [2021-11-05 19:33:01,402 INFO L226 Difference]: Without dead ends: 82788 [2021-11-05 19:33:01,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:33:01,466 INFO L933 BasicCegarLoop]: 31076 mSDtfsCounter, 26741 mSDsluCounter, 29682 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 286.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26741 SdHoareTripleChecker+Valid, 60758 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.28ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 324.87ms IncrementalHoareTripleChecker+Time [2021-11-05 19:33:01,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26741 Valid, 60758 Invalid, 82 Unknown, 0 Unchecked, 44.28ms Time], IncrementalHoareTripleChecker [52 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 324.87ms Time] [2021-11-05 19:33:01,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82788 states. [2021-11-05 19:33:03,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82788 to 81048. [2021-11-05 19:33:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81048 states, 81041 states have (on average 1.2746757813946028) internal successors, (103301), 81047 states have internal predecessors, (103301), 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) [2021-11-05 19:33:03,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81048 states to 81048 states and 103301 transitions. [2021-11-05 19:33:03,883 INFO L78 Accepts]: Start accepts. Automaton has 81048 states and 103301 transitions. Word has length 82 [2021-11-05 19:33:03,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:33:03,884 INFO L470 AbstractCegarLoop]: Abstraction has 81048 states and 103301 transitions. [2021-11-05 19:33:03,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:33:03,884 INFO L276 IsEmpty]: Start isEmpty. Operand 81048 states and 103301 transitions. [2021-11-05 19:33:03,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 19:33:03,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:33:03,889 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] [2021-11-05 19:33:03,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 19:33:03,890 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 19:33:03,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:33:03,890 INFO L85 PathProgramCache]: Analyzing trace with hash 640550573, now seen corresponding path program 1 times [2021-11-05 19:33:03,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:33:03,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185451803] [2021-11-05 19:33:03,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:33:03,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:33:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:33:04,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-05 19:33:04,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:33:04,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185451803] [2021-11-05 19:33:04,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185451803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:33:04,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:33:04,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:33:04,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132599681] [2021-11-05 19:33:04,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:33:04,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:33:04,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:33:04,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:33:04,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:33:04,192 INFO L87 Difference]: Start difference. First operand 81048 states and 103301 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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)