./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.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 709e000bdea0bf1517f1edc69f1d5199e729e3cf1effc12ce3f796e9f1102469 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 13:53:14,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 13:53:14,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 13:53:14,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 13:53:14,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 13:53:14,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 13:53:14,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 13:53:14,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 13:53:14,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 13:53:14,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 13:53:14,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 13:53:14,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 13:53:14,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 13:53:14,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 13:53:14,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 13:53:14,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 13:53:14,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 13:53:14,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 13:53:14,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 13:53:14,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 13:53:14,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 13:53:14,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 13:53:14,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 13:53:14,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 13:53:14,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 13:53:14,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 13:53:14,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 13:53:14,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 13:53:14,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 13:53:14,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 13:53:14,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 13:53:14,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 13:53:14,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 13:53:14,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 13:53:14,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 13:53:14,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 13:53:14,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 13:53:14,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 13:53:14,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 13:53:14,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 13:53:14,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 13:53:14,251 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 13:53:14,274 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 13:53:14,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 13:53:14,274 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 13:53:14,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 13:53:14,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 13:53:14,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 13:53:14,276 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 13:53:14,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 13:53:14,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 13:53:14,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 13:53:14,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 13:53:14,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 13:53:14,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 13:53:14,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 13:53:14,277 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 13:53:14,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 13:53:14,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 13:53:14,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 13:53:14,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 13:53:14,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 13:53:14,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 13:53:14,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 13:53:14,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 13:53:14,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 13:53:14,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 13:53:14,279 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 13:53:14,279 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 13:53:14,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 13:53:14,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 13:53:14,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 709e000bdea0bf1517f1edc69f1d5199e729e3cf1effc12ce3f796e9f1102469 [2021-11-06 13:53:14,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 13:53:14,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 13:53:14,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 13:53:14,472 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 13:53:14,474 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 13:53:14,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i [2021-11-06 13:53:14,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86f464262/46eb6ed6da1d4e1f8e5ca54678ec3a83/FLAG2cc2aa910 [2021-11-06 13:53:15,106 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 13:53:15,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i [2021-11-06 13:53:15,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86f464262/46eb6ed6da1d4e1f8e5ca54678ec3a83/FLAG2cc2aa910 [2021-11-06 13:53:15,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86f464262/46eb6ed6da1d4e1f8e5ca54678ec3a83 [2021-11-06 13:53:15,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 13:53:15,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 13:53:15,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 13:53:15,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 13:53:15,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 13:53:15,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 01:53:15" (1/1) ... [2021-11-06 13:53:15,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bbcd1ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:53:15, skipping insertion in model container [2021-11-06 13:53:15,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 01:53:15" (1/1) ... [2021-11-06 13:53:15,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 13:53:15,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 13:53:16,338 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i[185756,185769] [2021-11-06 13:53:16,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 13:53:16,425 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 13:53:16,622 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i[185756,185769] [2021-11-06 13:53:16,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 13:53:16,726 INFO L208 MainTranslator]: Completed translation [2021-11-06 13:53:16,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:53:16 WrapperNode [2021-11-06 13:53:16,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 13:53:16,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 13:53:16,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 13:53:16,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 13:53:16,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:53:16" (1/1) ... [2021-11-06 13:53:16,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:53:16" (1/1) ... [2021-11-06 13:53:17,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 13:53:17,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 13:53:17,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 13:53:17,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 13:53:17,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:53:16" (1/1) ... [2021-11-06 13:53:17,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:53:16" (1/1) ... [2021-11-06 13:53:18,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:53:16" (1/1) ... [2021-11-06 13:53:18,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:53:16" (1/1) ... [2021-11-06 13:53:18,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:53:16" (1/1) ... [2021-11-06 13:53:18,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:53:16" (1/1) ... [2021-11-06 13:53:18,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:53:16" (1/1) ... [2021-11-06 13:53:19,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 13:53:19,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 13:53:19,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 13:53:19,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 13:53:19,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:53:16" (1/1) ... [2021-11-06 13:53:19,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 13:53:19,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 13:53:19,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 13:53:19,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 13:53:19,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 13:53:19,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 13:53:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 13:53:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 13:53:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-06 13:53:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 13:53:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 13:53:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 13:53:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 13:53:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 13:53:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 13:53:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 13:53:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 13:53:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 13:53:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 13:53:19,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 13:53:19,975 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 13:53:20,013 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 13:53:38,906 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3547: assume !vfio_pci_ioctl_#t~short204;call vfio_pci_ioctl_#t~mem200 := read~int(vfio_pci_ioctl_~#info___0~0.base, 8 + vfio_pci_ioctl_~#info___0~0.offset, 4);call vfio_pci_ioctl_#t~mem202 := read~int(vfio_pci_ioctl_~pdev~2.base, 8 + (1242 + vfio_pci_ioctl_~pdev~2.offset + 56 * (vfio_pci_ioctl_#t~mem200 % 4294967296)), 8);call vfio_pci_ioctl_#t~mem201 := read~int(vfio_pci_ioctl_~#info___0~0.base, 8 + vfio_pci_ioctl_~#info___0~0.offset, 4);call vfio_pci_ioctl_#t~mem203 := read~int(vfio_pci_ioctl_~pdev~2.base, 1242 + vfio_pci_ioctl_~pdev~2.offset + 56 * (vfio_pci_ioctl_#t~mem201 % 4294967296), 8);vfio_pci_ioctl_#t~short204 := vfio_pci_ioctl_#t~mem202 % 18446744073709551616 != vfio_pci_ioctl_#t~mem203 % 18446744073709551616; [2021-11-06 13:53:38,907 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3546: assume vfio_pci_ioctl_#t~short204; [2021-11-06 13:53:38,907 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4594: assume vfio_pci_ioctl_#t~short204; [2021-11-06 13:53:38,907 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4595: assume !vfio_pci_ioctl_#t~short204;call vfio_pci_ioctl_#t~mem200 := read~int(vfio_pci_ioctl_~#info___0~0.base, 8 + vfio_pci_ioctl_~#info___0~0.offset, 4);call vfio_pci_ioctl_#t~mem202 := read~int(vfio_pci_ioctl_~pdev~2.base, 8 + (1242 + vfio_pci_ioctl_~pdev~2.offset + 56 * (vfio_pci_ioctl_#t~mem200 % 4294967296)), 8);call vfio_pci_ioctl_#t~mem201 := read~int(vfio_pci_ioctl_~#info___0~0.base, 8 + vfio_pci_ioctl_~#info___0~0.offset, 4);call vfio_pci_ioctl_#t~mem203 := read~int(vfio_pci_ioctl_~pdev~2.base, 1242 + vfio_pci_ioctl_~pdev~2.offset + 56 * (vfio_pci_ioctl_#t~mem201 % 4294967296), 8);vfio_pci_ioctl_#t~short204 := vfio_pci_ioctl_#t~mem202 % 18446744073709551616 != vfio_pci_ioctl_#t~mem203 % 18446744073709551616; [2021-11-06 13:53:38,908 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2754: assume vfio_pci_ioctl_#t~short204;havoc vfio_pci_ioctl_#t~mem198;havoc vfio_pci_ioctl_#t~mem199;havoc vfio_pci_ioctl_#t~mem200;havoc vfio_pci_ioctl_#t~mem202;havoc vfio_pci_ioctl_#t~mem201;havoc vfio_pci_ioctl_#t~mem203;havoc vfio_pci_ioctl_#t~short204;call vfio_pci_ioctl_#t~mem205 := read~int(vfio_pci_ioctl_~#info___0~0.base, 8 + vfio_pci_ioctl_~#info___0~0.offset, 4);call vfio_pci_ioctl_#t~mem207 := read~int(vfio_pci_ioctl_~pdev~2.base, 8 + (1242 + vfio_pci_ioctl_~pdev~2.offset + 56 * (vfio_pci_ioctl_#t~mem205 % 4294967296)), 8);call vfio_pci_ioctl_#t~mem206 := read~int(vfio_pci_ioctl_~#info___0~0.base, 8 + vfio_pci_ioctl_~#info___0~0.offset, 4);call vfio_pci_ioctl_#t~mem208 := read~int(vfio_pci_ioctl_~pdev~2.base, 1242 + vfio_pci_ioctl_~pdev~2.offset + 56 * (vfio_pci_ioctl_#t~mem206 % 4294967296), 8);call write~int(1 + (vfio_pci_ioctl_#t~mem207 - vfio_pci_ioctl_#t~mem208), vfio_pci_ioctl_~#info___0~0.base, 16 + vfio_pci_ioctl_~#info___0~0.offset, 8);havoc vfio_pci_ioctl_#t~mem205;havoc vfio_pci_ioctl_#t~mem207;havoc vfio_pci_ioctl_#t~mem206;havoc vfio_pci_ioctl_#t~mem208; [2021-11-06 13:53:38,908 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2754: assume !vfio_pci_ioctl_#t~short204;havoc vfio_pci_ioctl_#t~mem198;havoc vfio_pci_ioctl_#t~mem199;havoc vfio_pci_ioctl_#t~mem200;havoc vfio_pci_ioctl_#t~mem202;havoc vfio_pci_ioctl_#t~mem201;havoc vfio_pci_ioctl_#t~mem203;havoc vfio_pci_ioctl_#t~short204;call write~int(0, vfio_pci_ioctl_~#info___0~0.base, 16 + vfio_pci_ioctl_~#info___0~0.offset, 8); [2021-11-06 13:53:38,908 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2754-2: call vfio_pci_ioctl_#t~mem209 := read~int(vfio_pci_ioctl_~#info___0~0.base, 16 + vfio_pci_ioctl_~#info___0~0.offset, 8); [2021-11-06 13:53:38,908 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2754-3: assume vfio_pci_ioctl_#t~short204;havoc vfio_pci_ioctl_#t~mem198;havoc vfio_pci_ioctl_#t~mem199;havoc vfio_pci_ioctl_#t~mem200;havoc vfio_pci_ioctl_#t~mem202;havoc vfio_pci_ioctl_#t~mem201;havoc vfio_pci_ioctl_#t~mem203;havoc vfio_pci_ioctl_#t~short204;call vfio_pci_ioctl_#t~mem205 := read~int(vfio_pci_ioctl_~#info___0~0.base, 8 + vfio_pci_ioctl_~#info___0~0.offset, 4);call vfio_pci_ioctl_#t~mem207 := read~int(vfio_pci_ioctl_~pdev~2.base, 8 + (1242 + vfio_pci_ioctl_~pdev~2.offset + 56 * (vfio_pci_ioctl_#t~mem205 % 4294967296)), 8);call vfio_pci_ioctl_#t~mem206 := read~int(vfio_pci_ioctl_~#info___0~0.base, 8 + vfio_pci_ioctl_~#info___0~0.offset, 4);call vfio_pci_ioctl_#t~mem208 := read~int(vfio_pci_ioctl_~pdev~2.base, 1242 + vfio_pci_ioctl_~pdev~2.offset + 56 * (vfio_pci_ioctl_#t~mem206 % 4294967296), 8);call write~int(1 + (vfio_pci_ioctl_#t~mem207 - vfio_pci_ioctl_#t~mem208), vfio_pci_ioctl_~#info___0~0.base, 16 + vfio_pci_ioctl_~#info___0~0.offset, 8);havoc vfio_pci_ioctl_#t~mem205;havoc vfio_pci_ioctl_#t~mem207;havoc vfio_pci_ioctl_#t~mem206;havoc vfio_pci_ioctl_#t~mem208; [2021-11-06 13:53:38,908 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2754-3: assume !vfio_pci_ioctl_#t~short204;havoc vfio_pci_ioctl_#t~mem198;havoc vfio_pci_ioctl_#t~mem199;havoc vfio_pci_ioctl_#t~mem200;havoc vfio_pci_ioctl_#t~mem202;havoc vfio_pci_ioctl_#t~mem201;havoc vfio_pci_ioctl_#t~mem203;havoc vfio_pci_ioctl_#t~short204;call write~int(0, vfio_pci_ioctl_~#info___0~0.base, 16 + vfio_pci_ioctl_~#info___0~0.offset, 8); [2021-11-06 13:53:38,908 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2754-5: call vfio_pci_ioctl_#t~mem209 := read~int(vfio_pci_ioctl_~#info___0~0.base, 16 + vfio_pci_ioctl_~#info___0~0.offset, 8); [2021-11-06 13:53:38,909 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2759-1: assume 0 == vfio_pci_ioctl_#t~mem209 % 18446744073709551616;havoc vfio_pci_ioctl_#t~mem209;call write~int(0, vfio_pci_ioctl_~#info___0~0.base, 4 + vfio_pci_ioctl_~#info___0~0.offset, 4); [2021-11-06 13:53:38,909 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2759-1: assume !(0 == vfio_pci_ioctl_#t~mem209 % 18446744073709551616);havoc vfio_pci_ioctl_#t~mem209;call write~int(3, vfio_pci_ioctl_~#info___0~0.base, 4 + vfio_pci_ioctl_~#info___0~0.offset, 4);call vfio_pci_ioctl_#t~mem210 := read~int(vfio_pci_ioctl_~#info___0~0.base, 8 + vfio_pci_ioctl_~#info___0~0.offset, 4);call vfio_pci_ioctl_#t~mem211 := read~int(vfio_pci_ioctl_~pdev~2.base, 24 + (1242 + vfio_pci_ioctl_~pdev~2.offset + 56 * (vfio_pci_ioctl_#t~mem210 % 4294967296)), 8);vfio_pci_ioctl_#t~short213 := 0 != ~bitwiseAnd(vfio_pci_ioctl_#t~mem211, 512) % 18446744073709551616; [2021-11-06 13:53:38,909 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2759: assume 0 == vfio_pci_ioctl_#t~mem209 % 18446744073709551616;havoc vfio_pci_ioctl_#t~mem209;call write~int(0, vfio_pci_ioctl_~#info___0~0.base, 4 + vfio_pci_ioctl_~#info___0~0.offset, 4); [2021-11-06 13:53:38,909 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2759: assume !(0 == vfio_pci_ioctl_#t~mem209 % 18446744073709551616);havoc vfio_pci_ioctl_#t~mem209;call write~int(3, vfio_pci_ioctl_~#info___0~0.base, 4 + vfio_pci_ioctl_~#info___0~0.offset, 4);call vfio_pci_ioctl_#t~mem210 := read~int(vfio_pci_ioctl_~#info___0~0.base, 8 + vfio_pci_ioctl_~#info___0~0.offset, 4);call vfio_pci_ioctl_#t~mem211 := read~int(vfio_pci_ioctl_~pdev~2.base, 24 + (1242 + vfio_pci_ioctl_~pdev~2.offset + 56 * (vfio_pci_ioctl_#t~mem210 % 4294967296)), 8);vfio_pci_ioctl_#t~short213 := 0 != ~bitwiseAnd(vfio_pci_ioctl_#t~mem211, 512) % 18446744073709551616; [2021-11-06 13:53:38,909 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765: assume vfio_pci_ioctl_#t~short213;call vfio_pci_ioctl_#t~mem212 := read~int(vfio_pci_ioctl_~#info___0~0.base, 16 + vfio_pci_ioctl_~#info___0~0.offset, 8);vfio_pci_ioctl_#t~short213 := vfio_pci_ioctl_#t~mem212 % 18446744073709551616 > 4095; [2021-11-06 13:53:38,909 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765: assume !vfio_pci_ioctl_#t~short213; [2021-11-06 13:53:38,909 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-2: assume vfio_pci_ioctl_#t~short213;havoc vfio_pci_ioctl_#t~mem210;havoc vfio_pci_ioctl_#t~mem211;havoc vfio_pci_ioctl_#t~mem212;havoc vfio_pci_ioctl_#t~short213;call vfio_pci_ioctl_#t~mem214 := read~int(vfio_pci_ioctl_~#info___0~0.base, 4 + vfio_pci_ioctl_~#info___0~0.offset, 4);call write~int(~bitwiseOr(vfio_pci_ioctl_#t~mem214, 4), vfio_pci_ioctl_~#info___0~0.base, 4 + vfio_pci_ioctl_~#info___0~0.offset, 4);havoc vfio_pci_ioctl_#t~mem214; [2021-11-06 13:53:38,910 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-2: assume !vfio_pci_ioctl_#t~short213;havoc vfio_pci_ioctl_#t~mem210;havoc vfio_pci_ioctl_#t~mem211;havoc vfio_pci_ioctl_#t~mem212;havoc vfio_pci_ioctl_#t~short213; [2021-11-06 13:53:38,910 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-5: assume vfio_pci_ioctl_#t~short213;call vfio_pci_ioctl_#t~mem212 := read~int(vfio_pci_ioctl_~#info___0~0.base, 16 + vfio_pci_ioctl_~#info___0~0.offset, 8);vfio_pci_ioctl_#t~short213 := vfio_pci_ioctl_#t~mem212 % 18446744073709551616 > 4095; [2021-11-06 13:53:38,910 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-5: assume !vfio_pci_ioctl_#t~short213; [2021-11-06 13:53:38,910 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-7: assume vfio_pci_ioctl_#t~short213;havoc vfio_pci_ioctl_#t~mem210;havoc vfio_pci_ioctl_#t~mem211;havoc vfio_pci_ioctl_#t~mem212;havoc vfio_pci_ioctl_#t~short213;call vfio_pci_ioctl_#t~mem214 := read~int(vfio_pci_ioctl_~#info___0~0.base, 4 + vfio_pci_ioctl_~#info___0~0.offset, 4);call write~int(~bitwiseOr(vfio_pci_ioctl_#t~mem214, 4), vfio_pci_ioctl_~#info___0~0.base, 4 + vfio_pci_ioctl_~#info___0~0.offset, 4);havoc vfio_pci_ioctl_#t~mem214; [2021-11-06 13:53:38,910 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-7: assume !vfio_pci_ioctl_#t~short213;havoc vfio_pci_ioctl_#t~mem210;havoc vfio_pci_ioctl_#t~mem211;havoc vfio_pci_ioctl_#t~mem212;havoc vfio_pci_ioctl_#t~short213; [2021-11-06 13:53:38,937 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 13:53:38,938 INFO L299 CfgBuilder]: Removed 6923 assume(true) statements. [2021-11-06 13:53:38,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 01:53:38 BoogieIcfgContainer [2021-11-06 13:53:38,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 13:53:38,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 13:53:38,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 13:53:38,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 13:53:38,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 01:53:15" (1/3) ... [2021-11-06 13:53:38,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d211338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 01:53:38, skipping insertion in model container [2021-11-06 13:53:38,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:53:16" (2/3) ... [2021-11-06 13:53:38,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d211338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 01:53:38, skipping insertion in model container [2021-11-06 13:53:38,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 01:53:38" (3/3) ... [2021-11-06 13:53:38,949 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i [2021-11-06 13:53:38,952 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 13:53:38,953 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-06 13:53:39,000 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 13:53:39,007 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 13:53:39,008 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-06 13:53:39,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 7809 states, 7801 states have (on average 1.4563517497756697) internal successors, (11361), 7808 states have internal predecessors, (11361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:39,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-06 13:53:39,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:53:39,113 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:53:39,114 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:53:39,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:53:39,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1086763830, now seen corresponding path program 1 times [2021-11-06 13:53:39,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:53:39,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875814451] [2021-11-06 13:53:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:53:39,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:53:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:53:39,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:53:39,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:53:39,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875814451] [2021-11-06 13:53:39,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875814451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:53:39,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:53:39,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:53:39,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056596412] [2021-11-06 13:53:39,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:53:39,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:53:39,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:53:39,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:53:39,501 INFO L87 Difference]: Start difference. First operand has 7809 states, 7801 states have (on average 1.4563517497756697) internal successors, (11361), 7808 states have internal predecessors, (11361), 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 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:39,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:53:39,786 INFO L93 Difference]: Finished difference Result 15969 states and 23160 transitions. [2021-11-06 13:53:39,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:53:39,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2021-11-06 13:53:39,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:53:39,831 INFO L225 Difference]: With dead ends: 15969 [2021-11-06 13:53:39,831 INFO L226 Difference]: Without dead ends: 8155 [2021-11-06 13:53:39,848 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:53:39,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8155 states. [2021-11-06 13:53:40,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8155 to 8123. [2021-11-06 13:53:40,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8123 states, 8116 states have (on average 1.4324790537210448) internal successors, (11626), 8122 states have internal predecessors, (11626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:40,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8123 states to 8123 states and 11626 transitions. [2021-11-06 13:53:40,048 INFO L78 Accepts]: Start accepts. Automaton has 8123 states and 11626 transitions. Word has length 32 [2021-11-06 13:53:40,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:53:40,048 INFO L470 AbstractCegarLoop]: Abstraction has 8123 states and 11626 transitions. [2021-11-06 13:53:40,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:40,049 INFO L276 IsEmpty]: Start isEmpty. Operand 8123 states and 11626 transitions. [2021-11-06 13:53:40,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-06 13:53:40,051 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:53:40,051 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:53:40,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 13:53:40,052 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:53:40,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:53:40,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1709174855, now seen corresponding path program 1 times [2021-11-06 13:53:40,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:53:40,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437273879] [2021-11-06 13:53:40,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:53:40,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:53:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:53:40,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:53:40,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:53:40,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437273879] [2021-11-06 13:53:40,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437273879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:53:40,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:53:40,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:53:40,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515679646] [2021-11-06 13:53:40,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:53:40,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:53:40,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:53:40,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:53:40,197 INFO L87 Difference]: Start difference. First operand 8123 states and 11626 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:40,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:53:40,918 INFO L93 Difference]: Finished difference Result 23816 states and 34243 transitions. [2021-11-06 13:53:40,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:53:40,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 34 [2021-11-06 13:53:40,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:53:40,980 INFO L225 Difference]: With dead ends: 23816 [2021-11-06 13:53:40,980 INFO L226 Difference]: Without dead ends: 15696 [2021-11-06 13:53:40,997 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:53:41,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15696 states. [2021-11-06 13:53:41,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15696 to 15688. [2021-11-06 13:53:41,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15688 states, 15681 states have (on average 1.4418723295708182) internal successors, (22610), 15687 states have internal predecessors, (22610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:41,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15688 states to 15688 states and 22610 transitions. [2021-11-06 13:53:41,353 INFO L78 Accepts]: Start accepts. Automaton has 15688 states and 22610 transitions. Word has length 34 [2021-11-06 13:53:41,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:53:41,353 INFO L470 AbstractCegarLoop]: Abstraction has 15688 states and 22610 transitions. [2021-11-06 13:53:41,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:41,354 INFO L276 IsEmpty]: Start isEmpty. Operand 15688 states and 22610 transitions. [2021-11-06 13:53:41,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 13:53:41,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:53:41,362 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:53:41,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 13:53:41,362 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:53:41,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:53:41,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1068528312, now seen corresponding path program 1 times [2021-11-06 13:53:41,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:53:41,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722991136] [2021-11-06 13:53:41,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:53:41,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:53:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:53:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:53:41,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:53:41,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722991136] [2021-11-06 13:53:41,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722991136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:53:41,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:53:41,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:53:41,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624388300] [2021-11-06 13:53:41,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:53:41,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:53:41,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:53:41,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:53:41,524 INFO L87 Difference]: Start difference. First operand 15688 states and 22610 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:41,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:53:41,803 INFO L93 Difference]: Finished difference Result 31389 states and 45249 transitions. [2021-11-06 13:53:41,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:53:41,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 124 [2021-11-06 13:53:41,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:53:41,838 INFO L225 Difference]: With dead ends: 31389 [2021-11-06 13:53:41,839 INFO L226 Difference]: Without dead ends: 15704 [2021-11-06 13:53:41,859 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:53:41,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15704 states. [2021-11-06 13:53:42,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15704 to 15704. [2021-11-06 13:53:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15704 states, 15697 states have (on average 1.4414219277568963) internal successors, (22626), 15703 states have internal predecessors, (22626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:42,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15704 states to 15704 states and 22626 transitions. [2021-11-06 13:53:42,290 INFO L78 Accepts]: Start accepts. Automaton has 15704 states and 22626 transitions. Word has length 124 [2021-11-06 13:53:42,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:53:42,291 INFO L470 AbstractCegarLoop]: Abstraction has 15704 states and 22626 transitions. [2021-11-06 13:53:42,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:42,291 INFO L276 IsEmpty]: Start isEmpty. Operand 15704 states and 22626 transitions. [2021-11-06 13:53:42,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 13:53:42,292 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:53:42,292 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:53:42,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 13:53:42,293 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:53:42,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:53:42,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1460709686, now seen corresponding path program 1 times [2021-11-06 13:53:42,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:53:42,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838448221] [2021-11-06 13:53:42,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:53:42,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:53:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:53:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:53:42,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:53:42,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838448221] [2021-11-06 13:53:42,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838448221] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:53:42,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:53:42,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 13:53:42,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387766092] [2021-11-06 13:53:42,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:53:42,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:53:42,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:53:42,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 13:53:42,386 INFO L87 Difference]: Start difference. First operand 15704 states and 22626 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:43,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:53:43,445 INFO L93 Difference]: Finished difference Result 77686 states and 112156 transitions. [2021-11-06 13:53:43,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 13:53:43,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 124 [2021-11-06 13:53:43,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:53:43,578 INFO L225 Difference]: With dead ends: 77686 [2021-11-06 13:53:43,578 INFO L226 Difference]: Without dead ends: 61985 [2021-11-06 13:53:43,608 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:53:43,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61985 states. [2021-11-06 13:53:44,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61985 to 15708. [2021-11-06 13:53:44,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15708 states, 15701 states have (on average 1.4413094707343481) internal successors, (22630), 15707 states have internal predecessors, (22630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:44,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15708 states to 15708 states and 22630 transitions. [2021-11-06 13:53:44,229 INFO L78 Accepts]: Start accepts. Automaton has 15708 states and 22630 transitions. Word has length 124 [2021-11-06 13:53:44,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:53:44,231 INFO L470 AbstractCegarLoop]: Abstraction has 15708 states and 22630 transitions. [2021-11-06 13:53:44,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:44,231 INFO L276 IsEmpty]: Start isEmpty. Operand 15708 states and 22630 transitions. [2021-11-06 13:53:44,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-06 13:53:44,234 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:53:44,234 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:53:44,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 13:53:44,235 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:53:44,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:53:44,235 INFO L85 PathProgramCache]: Analyzing trace with hash 347341648, now seen corresponding path program 1 times [2021-11-06 13:53:44,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:53:44,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568864203] [2021-11-06 13:53:44,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:53:44,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:53:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:53:44,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:53:44,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:53:44,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568864203] [2021-11-06 13:53:44,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568864203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:53:44,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:53:44,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 13:53:44,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691412165] [2021-11-06 13:53:44,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:53:44,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:53:44,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:53:44,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 13:53:44,357 INFO L87 Difference]: Start difference. First operand 15708 states and 22630 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:45,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:53:45,435 INFO L93 Difference]: Finished difference Result 77746 states and 112212 transitions. [2021-11-06 13:53:45,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 13:53:45,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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 127 [2021-11-06 13:53:45,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:53:45,548 INFO L225 Difference]: With dead ends: 77746 [2021-11-06 13:53:45,548 INFO L226 Difference]: Without dead ends: 62041 [2021-11-06 13:53:45,580 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:53:45,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62041 states. [2021-11-06 13:53:46,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62041 to 15712. [2021-11-06 13:53:46,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15712 states, 15705 states have (on average 1.4411970709964979) internal successors, (22634), 15711 states have internal predecessors, (22634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:46,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15712 states to 15712 states and 22634 transitions. [2021-11-06 13:53:46,220 INFO L78 Accepts]: Start accepts. Automaton has 15712 states and 22634 transitions. Word has length 127 [2021-11-06 13:53:46,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:53:46,220 INFO L470 AbstractCegarLoop]: Abstraction has 15712 states and 22634 transitions. [2021-11-06 13:53:46,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:46,221 INFO L276 IsEmpty]: Start isEmpty. Operand 15712 states and 22634 transitions. [2021-11-06 13:53:46,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-06 13:53:46,222 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:53:46,222 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:53:46,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 13:53:46,222 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:53:46,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:53:46,223 INFO L85 PathProgramCache]: Analyzing trace with hash 38528940, now seen corresponding path program 1 times [2021-11-06 13:53:46,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:53:46,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356527018] [2021-11-06 13:53:46,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:53:46,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:53:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:53:46,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:53:46,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:53:46,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356527018] [2021-11-06 13:53:46,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356527018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:53:46,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:53:46,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 13:53:46,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615136571] [2021-11-06 13:53:46,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:53:46,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:53:46,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:53:46,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 13:53:46,341 INFO L87 Difference]: Start difference. First operand 15712 states and 22634 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:47,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:53:47,454 INFO L93 Difference]: Finished difference Result 77746 states and 112208 transitions. [2021-11-06 13:53:47,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 13:53:47,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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 129 [2021-11-06 13:53:47,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:53:47,559 INFO L225 Difference]: With dead ends: 77746 [2021-11-06 13:53:47,560 INFO L226 Difference]: Without dead ends: 62037 [2021-11-06 13:53:47,588 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:53:47,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62037 states. [2021-11-06 13:53:48,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62037 to 15716. [2021-11-06 13:53:48,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15716 states, 15709 states have (on average 1.4410847284995862) internal successors, (22638), 15715 states have internal predecessors, (22638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:48,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15716 states to 15716 states and 22638 transitions. [2021-11-06 13:53:48,088 INFO L78 Accepts]: Start accepts. Automaton has 15716 states and 22638 transitions. Word has length 129 [2021-11-06 13:53:48,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:53:48,088 INFO L470 AbstractCegarLoop]: Abstraction has 15716 states and 22638 transitions. [2021-11-06 13:53:48,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:48,089 INFO L276 IsEmpty]: Start isEmpty. Operand 15716 states and 22638 transitions. [2021-11-06 13:53:48,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-06 13:53:48,090 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:53:48,090 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:53:48,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 13:53:48,090 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:53:48,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:53:48,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1634946294, now seen corresponding path program 1 times [2021-11-06 13:53:48,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:53:48,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821563021] [2021-11-06 13:53:48,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:53:48,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:53:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:53:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:53:48,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:53:48,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821563021] [2021-11-06 13:53:48,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821563021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:53:48,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:53:48,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 13:53:48,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325021026] [2021-11-06 13:53:48,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:53:48,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:53:48,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:53:48,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 13:53:48,356 INFO L87 Difference]: Start difference. First operand 15716 states and 22638 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:49,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:53:49,718 INFO L93 Difference]: Finished difference Result 77750 states and 112208 transitions. [2021-11-06 13:53:49,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 13:53:49,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 132 [2021-11-06 13:53:49,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:53:49,815 INFO L225 Difference]: With dead ends: 77750 [2021-11-06 13:53:49,816 INFO L226 Difference]: Without dead ends: 62037 [2021-11-06 13:53:49,840 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:53:49,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62037 states. [2021-11-06 13:53:50,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62037 to 15720. [2021-11-06 13:53:50,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15720 states, 15713 states have (on average 1.4409724431998983) internal successors, (22642), 15719 states have internal predecessors, (22642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:50,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15720 states to 15720 states and 22642 transitions. [2021-11-06 13:53:50,403 INFO L78 Accepts]: Start accepts. Automaton has 15720 states and 22642 transitions. Word has length 132 [2021-11-06 13:53:50,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:53:50,403 INFO L470 AbstractCegarLoop]: Abstraction has 15720 states and 22642 transitions. [2021-11-06 13:53:50,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:50,404 INFO L276 IsEmpty]: Start isEmpty. Operand 15720 states and 22642 transitions. [2021-11-06 13:53:50,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-06 13:53:50,405 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:53:50,405 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:53:50,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 13:53:50,405 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:53:50,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:53:50,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1340369784, now seen corresponding path program 1 times [2021-11-06 13:53:50,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:53:50,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632012336] [2021-11-06 13:53:50,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:53:50,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:53:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:53:50,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:53:50,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:53:50,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632012336] [2021-11-06 13:53:50,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632012336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:53:50,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:53:50,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 13:53:50,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883859448] [2021-11-06 13:53:50,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:53:50,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:53:50,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:53:50,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 13:53:50,535 INFO L87 Difference]: Start difference. First operand 15720 states and 22642 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:52,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:53:52,214 INFO L93 Difference]: Finished difference Result 77758 states and 112212 transitions. [2021-11-06 13:53:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 13:53:52,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-06 13:53:52,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:53:52,308 INFO L225 Difference]: With dead ends: 77758 [2021-11-06 13:53:52,309 INFO L226 Difference]: Without dead ends: 62041 [2021-11-06 13:53:52,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:53:52,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62041 states. [2021-11-06 13:53:52,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62041 to 15724. [2021-11-06 13:53:52,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15724 states, 15717 states have (on average 1.4408602150537635) internal successors, (22646), 15723 states have internal predecessors, (22646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:52,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15724 states to 15724 states and 22646 transitions. [2021-11-06 13:53:52,898 INFO L78 Accepts]: Start accepts. Automaton has 15724 states and 22646 transitions. Word has length 135 [2021-11-06 13:53:52,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:53:52,899 INFO L470 AbstractCegarLoop]: Abstraction has 15724 states and 22646 transitions. [2021-11-06 13:53:52,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:52,899 INFO L276 IsEmpty]: Start isEmpty. Operand 15724 states and 22646 transitions. [2021-11-06 13:53:52,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 13:53:52,904 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:53:52,904 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:53:52,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 13:53:52,905 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:53:52,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:53:52,905 INFO L85 PathProgramCache]: Analyzing trace with hash 423059804, now seen corresponding path program 1 times [2021-11-06 13:53:52,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:53:52,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993374535] [2021-11-06 13:53:52,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:53:52,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:53:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:53:53,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:53:53,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:53:53,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993374535] [2021-11-06 13:53:53,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993374535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:53:53,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:53:53,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 13:53:53,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023904864] [2021-11-06 13:53:53,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:53:53,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:53:53,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:53:53,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 13:53:53,036 INFO L87 Difference]: Start difference. First operand 15724 states and 22646 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:54,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:53:54,734 INFO L93 Difference]: Finished difference Result 77742 states and 112192 transitions. [2021-11-06 13:53:54,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 13:53:54,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-06 13:53:54,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:53:54,848 INFO L225 Difference]: With dead ends: 77742 [2021-11-06 13:53:54,849 INFO L226 Difference]: Without dead ends: 62021 [2021-11-06 13:53:54,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:53:54,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62021 states. [2021-11-06 13:53:55,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62021 to 15728. [2021-11-06 13:53:55,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15728 states, 15721 states have (on average 1.4407480440175562) internal successors, (22650), 15727 states have internal predecessors, (22650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15728 states to 15728 states and 22650 transitions. [2021-11-06 13:53:55,766 INFO L78 Accepts]: Start accepts. Automaton has 15728 states and 22650 transitions. Word has length 137 [2021-11-06 13:53:55,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:53:55,767 INFO L470 AbstractCegarLoop]: Abstraction has 15728 states and 22650 transitions. [2021-11-06 13:53:55,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:55,767 INFO L276 IsEmpty]: Start isEmpty. Operand 15728 states and 22650 transitions. [2021-11-06 13:53:55,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-06 13:53:55,768 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:53:55,768 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:53:55,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 13:53:55,768 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:53:55,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:53:55,769 INFO L85 PathProgramCache]: Analyzing trace with hash -397844976, now seen corresponding path program 1 times [2021-11-06 13:53:55,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:53:55,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541880350] [2021-11-06 13:53:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:53:55,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:53:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:53:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:53:55,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:53:55,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541880350] [2021-11-06 13:53:55,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541880350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:53:55,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:53:55,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 13:53:55,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128728877] [2021-11-06 13:53:55,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:53:55,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:53:55,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:53:55,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 13:53:55,895 INFO L87 Difference]: Start difference. First operand 15728 states and 22650 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 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) [2021-11-06 13:53:57,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:53:57,729 INFO L93 Difference]: Finished difference Result 77655 states and 112086 transitions. [2021-11-06 13:53:57,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 13:53:57,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 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 [2021-11-06 13:53:57,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:53:57,839 INFO L225 Difference]: With dead ends: 77655 [2021-11-06 13:53:57,839 INFO L226 Difference]: Without dead ends: 61930 [2021-11-06 13:53:57,866 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:53:57,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61930 states. [2021-11-06 13:53:58,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61930 to 15732. [2021-11-06 13:53:58,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15732 states, 15725 states have (on average 1.4406359300476947) internal successors, (22654), 15731 states have internal predecessors, (22654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:53:58,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15732 states to 15732 states and 22654 transitions. [2021-11-06 13:53:58,709 INFO L78 Accepts]: Start accepts. Automaton has 15732 states and 22654 transitions. Word has length 140 [2021-11-06 13:53:58,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:53:58,709 INFO L470 AbstractCegarLoop]: Abstraction has 15732 states and 22654 transitions. [2021-11-06 13:53:58,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 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) [2021-11-06 13:53:58,710 INFO L276 IsEmpty]: Start isEmpty. Operand 15732 states and 22654 transitions. [2021-11-06 13:53:58,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-06 13:53:58,719 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:53:58,719 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:53:58,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 13:53:58,720 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:53:58,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:53:58,720 INFO L85 PathProgramCache]: Analyzing trace with hash -286403660, now seen corresponding path program 1 times [2021-11-06 13:53:58,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:53:58,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752310756] [2021-11-06 13:53:58,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:53:58,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:53:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:53:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:53:58,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:53:58,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752310756] [2021-11-06 13:53:58,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752310756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:53:58,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:53:58,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 13:53:58,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872367] [2021-11-06 13:53:58,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 13:53:58,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:53:58,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 13:53:58,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:53:58,869 INFO L87 Difference]: Start difference. First operand 15732 states and 22654 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:54:01,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:54:01,071 INFO L93 Difference]: Finished difference Result 77054 states and 111432 transitions. [2021-11-06 13:54:01,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 13:54:01,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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 142 [2021-11-06 13:54:01,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:54:01,178 INFO L225 Difference]: With dead ends: 77054 [2021-11-06 13:54:01,178 INFO L226 Difference]: Without dead ends: 61325 [2021-11-06 13:54:01,206 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 13:54:01,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61325 states. [2021-11-06 13:54:01,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61325 to 15738. [2021-11-06 13:54:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15738 states, 15731 states have (on average 1.4404678659970758) internal successors, (22660), 15737 states have internal predecessors, (22660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:54:01,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15738 states to 15738 states and 22660 transitions. [2021-11-06 13:54:01,991 INFO L78 Accepts]: Start accepts. Automaton has 15738 states and 22660 transitions. Word has length 142 [2021-11-06 13:54:01,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:54:01,992 INFO L470 AbstractCegarLoop]: Abstraction has 15738 states and 22660 transitions. [2021-11-06 13:54:01,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:54:01,992 INFO L276 IsEmpty]: Start isEmpty. Operand 15738 states and 22660 transitions. [2021-11-06 13:54:01,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-06 13:54:01,993 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:54:01,993 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:54:01,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 13:54:01,993 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:54:01,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:54:01,994 INFO L85 PathProgramCache]: Analyzing trace with hash 999922544, now seen corresponding path program 1 times [2021-11-06 13:54:01,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:54:01,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259592387] [2021-11-06 13:54:01,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:54:01,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:54:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:54:02,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:54:02,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:54:02,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259592387] [2021-11-06 13:54:02,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259592387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:54:02,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:54:02,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 13:54:02,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774825817] [2021-11-06 13:54:02,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:54:02,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:54:02,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:54:02,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 13:54:02,112 INFO L87 Difference]: Start difference. First operand 15738 states and 22660 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:54:03,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:54:03,815 INFO L93 Difference]: Finished difference Result 62377 states and 89981 transitions. [2021-11-06 13:54:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 13:54:03,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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 147 [2021-11-06 13:54:03,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:54:03,891 INFO L225 Difference]: With dead ends: 62377 [2021-11-06 13:54:03,891 INFO L226 Difference]: Without dead ends: 46642 [2021-11-06 13:54:03,918 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:54:03,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46642 states. [2021-11-06 13:54:04,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46642 to 15742. [2021-11-06 13:54:04,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15742 states, 15735 states have (on average 1.440355894502701) internal successors, (22664), 15741 states have internal predecessors, (22664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:54:04,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15742 states to 15742 states and 22664 transitions. [2021-11-06 13:54:04,695 INFO L78 Accepts]: Start accepts. Automaton has 15742 states and 22664 transitions. Word has length 147 [2021-11-06 13:54:04,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:54:04,695 INFO L470 AbstractCegarLoop]: Abstraction has 15742 states and 22664 transitions. [2021-11-06 13:54:04,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:54:04,696 INFO L276 IsEmpty]: Start isEmpty. Operand 15742 states and 22664 transitions. [2021-11-06 13:54:04,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-06 13:54:04,697 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:54:04,697 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:54:04,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 13:54:04,697 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:54:04,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:54:04,698 INFO L85 PathProgramCache]: Analyzing trace with hash 606895534, now seen corresponding path program 1 times [2021-11-06 13:54:04,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:54:04,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511216548] [2021-11-06 13:54:04,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:54:04,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:54:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:54:04,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:54:04,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:54:04,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511216548] [2021-11-06 13:54:04,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511216548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:54:04,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:54:04,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 13:54:04,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147901832] [2021-11-06 13:54:04,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:54:04,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:54:04,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:54:04,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 13:54:04,814 INFO L87 Difference]: Start difference. First operand 15742 states and 22664 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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)