./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 c36dfa3b 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-wip.dd.seqcomp-c36dfa3 [2021-11-04 03:11:32,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 03:11:32,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 03:11:32,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 03:11:32,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 03:11:32,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 03:11:32,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 03:11:32,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 03:11:32,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 03:11:32,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 03:11:32,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 03:11:32,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 03:11:32,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 03:11:32,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 03:11:32,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 03:11:32,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 03:11:32,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 03:11:32,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 03:11:32,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 03:11:32,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 03:11:32,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 03:11:32,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 03:11:32,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 03:11:32,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 03:11:32,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 03:11:32,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 03:11:32,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 03:11:32,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 03:11:32,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 03:11:32,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 03:11:32,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 03:11:32,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 03:11:32,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 03:11:32,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 03:11:32,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 03:11:32,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 03:11:32,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 03:11:32,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 03:11:32,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 03:11:32,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 03:11:32,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 03:11:32,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 03:11:32,475 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 03:11:32,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 03:11:32,476 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 03:11:32,477 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 03:11:32,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 03:11:32,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 03:11:32,478 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 03:11:32,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 03:11:32,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 03:11:32,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 03:11:32,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 03:11:32,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 03:11:32,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 03:11:32,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 03:11:32,480 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 03:11:32,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 03:11:32,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 03:11:32,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 03:11:32,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 03:11:32,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 03:11:32,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 03:11:32,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 03:11:32,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 03:11:32,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 03:11:32,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 03:11:32,483 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 03:11:32,483 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 03:11:32,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 03:11:32,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 03:11:32,483 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 709e000bdea0bf1517f1edc69f1d5199e729e3cf1effc12ce3f796e9f1102469 [2021-11-04 03:11:32,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 03:11:32,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 03:11:32,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 03:11:32,728 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 03:11:32,728 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 03:11:32,730 INFO L432 ainManager$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 [2021-11-04 03:11:32,794 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a44f072d7/53173772fff242ceb011577b2b9239d7/FLAG97a8f023a [2021-11-04 03:11:33,485 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 03:11:33,485 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 [2021-11-04 03:11:33,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a44f072d7/53173772fff242ceb011577b2b9239d7/FLAG97a8f023a [2021-11-04 03:11:33,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a44f072d7/53173772fff242ceb011577b2b9239d7 [2021-11-04 03:11:33,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 03:11:33,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 03:11:33,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 03:11:33,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 03:11:33,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 03:11:33,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:11:33" (1/1) ... [2021-11-04 03:11:33,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6066c5ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:11:33, skipping insertion in model container [2021-11-04 03:11:33,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:11:33" (1/1) ... [2021-11-04 03:11:33,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 03:11:33,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 03:11:35,394 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] [2021-11-04 03:11:35,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 03:11:35,493 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 03:11:35,766 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] [2021-11-04 03:11:35,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 03:11:35,908 INFO L208 MainTranslator]: Completed translation [2021-11-04 03:11:35,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:11:35 WrapperNode [2021-11-04 03:11:35,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 03:11:35,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 03:11:35,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 03:11:35,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 03:11:35,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:11:35" (1/1) ... [2021-11-04 03:11:36,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:11:35" (1/1) ... [2021-11-04 03:11:37,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 03:11:37,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 03:11:37,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 03:11:37,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 03:11:37,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:11:35" (1/1) ... [2021-11-04 03:11:37,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:11:35" (1/1) ... [2021-11-04 03:11:37,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:11:35" (1/1) ... [2021-11-04 03:11:37,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:11:35" (1/1) ... [2021-11-04 03:11:38,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:11:35" (1/1) ... [2021-11-04 03:11:38,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:11:35" (1/1) ... [2021-11-04 03:11:38,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:11:35" (1/1) ... [2021-11-04 03:11:39,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 03:11:39,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 03:11:39,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 03:11:39,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 03:11:39,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:11:35" (1/1) ... [2021-11-04 03:11:39,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 03:11:39,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:11:39,173 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) [2021-11-04 03:11:39,215 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 [2021-11-04 03:11:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 03:11:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 03:11:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 03:11:39,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 03:11:39,242 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-04 03:11:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 03:11:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 03:11:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 03:11:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 03:11:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 03:11:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 03:11:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 03:11:39,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 03:11:39,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 03:11:39,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 03:11:39,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 03:11:40,336 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-04 03:11:40,377 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-04 03:11:46,555 INFO L757 $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; [2021-11-04 03:11:46,555 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3546: assume vfio_pci_ioctl_#t~short204; [2021-11-04 03:11:46,556 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4594: assume vfio_pci_ioctl_#t~short204; [2021-11-04 03:11:46,556 INFO L757 $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; [2021-11-04 03:11:46,557 INFO L757 $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; [2021-11-04 03:11:46,557 INFO L757 $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); [2021-11-04 03:11:46,557 INFO L757 $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); [2021-11-04 03:11:46,557 INFO L757 $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; [2021-11-04 03:11:46,558 INFO L757 $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); [2021-11-04 03:11:46,558 INFO L757 $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); [2021-11-04 03:11:46,558 INFO L757 $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); [2021-11-04 03:11:46,558 INFO L757 $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; [2021-11-04 03:11:46,562 INFO L757 $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); [2021-11-04 03:11:46,563 INFO L757 $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; [2021-11-04 03:11:46,563 INFO L757 $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; [2021-11-04 03:11:46,563 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765: assume !vfio_pci_ioctl_#t~short213; [2021-11-04 03:11:46,563 INFO L757 $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; [2021-11-04 03:11:46,563 INFO L757 $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; [2021-11-04 03:11:46,563 INFO L757 $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; [2021-11-04 03:11:46,564 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-5: assume !vfio_pci_ioctl_#t~short213; [2021-11-04 03:11:46,564 INFO L757 $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; [2021-11-04 03:11:46,564 INFO L757 $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; [2021-11-04 03:11:46,599 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 03:11:46,599 INFO L299 CfgBuilder]: Removed 6923 assume(true) statements. [2021-11-04 03:11:46,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:11:46 BoogieIcfgContainer [2021-11-04 03:11:46,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 03:11:46,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 03:11:46,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 03:11:46,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 03:11:46,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 03:11:33" (1/3) ... [2021-11-04 03:11:46,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddca88e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:11:46, skipping insertion in model container [2021-11-04 03:11:46,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:11:35" (2/3) ... [2021-11-04 03:11:46,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddca88e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:11:46, skipping insertion in model container [2021-11-04 03:11:46,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:11:46" (3/3) ... [2021-11-04 03:11:46,618 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i [2021-11-04 03:11:46,622 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 03:11:46,623 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-04 03:11:46,694 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 03:11:46,701 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 [2021-11-04 03:11:46,702 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-04 03:11:46,827 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) [2021-11-04 03:11:46,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-04 03:11:46,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:11:46,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:11:46,851 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)] === [2021-11-04 03:11:46,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:11:46,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1086763830, now seen corresponding path program 1 times [2021-11-04 03:11:46,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:11:46,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47948000] [2021-11-04 03:11:46,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:11:46,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:11:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:11:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:11:47,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:11:47,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47948000] [2021-11-04 03:11:47,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47948000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:11:47,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:11:47,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:11:47,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6025912] [2021-11-04 03:11:47,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:11:47,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:11:47,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:11:47,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:11:47,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:11:47,373 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) [2021-11-04 03:12:12,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:12:12,987 INFO L93 Difference]: Finished difference Result 15969 states and 23160 transitions. [2021-11-04 03:12:12,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:12:12,990 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 [2021-11-04 03:12:12,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:12:13,043 INFO L225 Difference]: With dead ends: 15969 [2021-11-04 03:12:13,044 INFO L226 Difference]: Without dead ends: 8155 [2021-11-04 03:12:13,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:12:13,067 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 416 mSDsluCounter, 11215 mSDsCounter, 0 mSdLazyCounter, 22488 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21608.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.53ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24826.87ms IncrementalHoareTripleChecker+Time [2021-11-04 03:12:13,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 0 Invalid, 22490 Unknown, 0 Unchecked, 43.53ms Time], IncrementalHoareTripleChecker [2 Valid, 22488 Invalid, 0 Unknown, 0 Unchecked, 24826.87ms Time] [2021-11-04 03:12:13,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8155 states. [2021-11-04 03:12:13,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8155 to 8123. [2021-11-04 03:12:13,354 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) [2021-11-04 03:12:13,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8123 states to 8123 states and 11626 transitions. [2021-11-04 03:12:13,386 INFO L78 Accepts]: Start accepts. Automaton has 8123 states and 11626 transitions. Word has length 32 [2021-11-04 03:12:13,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:12:13,386 INFO L470 AbstractCegarLoop]: Abstraction has 8123 states and 11626 transitions. [2021-11-04 03:12:13,386 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) [2021-11-04 03:12:13,388 INFO L276 IsEmpty]: Start isEmpty. Operand 8123 states and 11626 transitions. [2021-11-04 03:12:13,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-04 03:12:13,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:12:13,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:12:13,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 03:12:13,391 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)] === [2021-11-04 03:12:13,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:12:13,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1709174855, now seen corresponding path program 1 times [2021-11-04 03:12:13,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:12:13,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835066513] [2021-11-04 03:12:13,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:12:13,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:12:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:12:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:12:13,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:12:13,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835066513] [2021-11-04 03:12:13,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835066513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:12:13,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:12:13,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:12:13,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176111381] [2021-11-04 03:12:13,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:12:13,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:12:13,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:12:13,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:12:13,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:12:13,546 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) [2021-11-04 03:12:52,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:12:52,602 INFO L93 Difference]: Finished difference Result 23816 states and 34243 transitions. [2021-11-04 03:12:52,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:12:52,602 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 [2021-11-04 03:12:52,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:12:52,669 INFO L225 Difference]: With dead ends: 23816 [2021-11-04 03:12:52,669 INFO L226 Difference]: Without dead ends: 15696 [2021-11-04 03:12:52,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:12:52,685 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11197 mSDsluCounter, 10933 mSDsCounter, 0 mSdLazyCounter, 33008 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33140.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11197 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 33011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.58ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38380.53ms IncrementalHoareTripleChecker+Time [2021-11-04 03:12:52,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11197 Valid, 0 Invalid, 33011 Unknown, 0 Unchecked, 53.58ms Time], IncrementalHoareTripleChecker [3 Valid, 33008 Invalid, 0 Unknown, 0 Unchecked, 38380.53ms Time] [2021-11-04 03:12:52,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15696 states. [2021-11-04 03:12:52,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15696 to 15688. [2021-11-04 03:12:53,030 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) [2021-11-04 03:12:53,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15688 states to 15688 states and 22610 transitions. [2021-11-04 03:12:53,071 INFO L78 Accepts]: Start accepts. Automaton has 15688 states and 22610 transitions. Word has length 34 [2021-11-04 03:12:53,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:12:53,072 INFO L470 AbstractCegarLoop]: Abstraction has 15688 states and 22610 transitions. [2021-11-04 03:12:53,072 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) [2021-11-04 03:12:53,073 INFO L276 IsEmpty]: Start isEmpty. Operand 15688 states and 22610 transitions. [2021-11-04 03:12:53,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-04 03:12:53,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:12:53,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:12:53,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 03:12:53,077 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)] === [2021-11-04 03:12:53,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:12:53,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1068528312, now seen corresponding path program 1 times [2021-11-04 03:12:53,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:12:53,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599526032] [2021-11-04 03:12:53,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:12:53,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:12:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:12:53,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:12:53,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:12:53,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599526032] [2021-11-04 03:12:53,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599526032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:12:53,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:12:53,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:12:53,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967849302] [2021-11-04 03:12:53,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:12:53,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:12:53,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:12:53,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:12:53,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:12:53,303 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) [2021-11-04 03:13:18,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:13:18,479 INFO L93 Difference]: Finished difference Result 31389 states and 45249 transitions. [2021-11-04 03:13:18,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:13:18,480 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 [2021-11-04 03:13:18,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:13:18,526 INFO L225 Difference]: With dead ends: 31389 [2021-11-04 03:13:18,527 INFO L226 Difference]: Without dead ends: 15704 [2021-11-04 03:13:18,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:13:18,548 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 11193 mSDsCounter, 0 mSdLazyCounter, 22474 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21439.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.18ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 22474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24787.09ms IncrementalHoareTripleChecker+Time [2021-11-04 03:13:18,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 22488 Unknown, 0 Unchecked, 31.18ms Time], IncrementalHoareTripleChecker [14 Valid, 22474 Invalid, 0 Unknown, 0 Unchecked, 24787.09ms Time] [2021-11-04 03:13:18,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15704 states. [2021-11-04 03:13:18,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15704 to 15704. [2021-11-04 03:13:18,875 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) [2021-11-04 03:13:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15704 states to 15704 states and 22626 transitions. [2021-11-04 03:13:18,909 INFO L78 Accepts]: Start accepts. Automaton has 15704 states and 22626 transitions. Word has length 124 [2021-11-04 03:13:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:13:18,909 INFO L470 AbstractCegarLoop]: Abstraction has 15704 states and 22626 transitions. [2021-11-04 03:13:18,909 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) [2021-11-04 03:13:18,910 INFO L276 IsEmpty]: Start isEmpty. Operand 15704 states and 22626 transitions. [2021-11-04 03:13:18,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-04 03:13:18,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:13:18,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:13:18,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 03:13:18,915 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)] === [2021-11-04 03:13:18,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:13:18,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1460709686, now seen corresponding path program 1 times [2021-11-04 03:13:18,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:13:18,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577654040] [2021-11-04 03:13:18,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:13:18,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:13:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:13:19,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:13:19,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:13:19,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577654040] [2021-11-04 03:13:19,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577654040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:13:19,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:13:19,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:13:19,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391399613] [2021-11-04 03:13:19,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:13:19,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:13:19,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:13:19,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:13:19,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:13:19,104 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) [2021-11-04 03:14:39,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:14:39,335 INFO L93 Difference]: Finished difference Result 77686 states and 112156 transitions. [2021-11-04 03:14:39,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:14:39,336 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 [2021-11-04 03:14:39,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:14:39,501 INFO L225 Difference]: With dead ends: 77686 [2021-11-04 03:14:39,501 INFO L226 Difference]: Without dead ends: 61985 [2021-11-04 03:14:39,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:14:39,546 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 33273 mSDsluCounter, 33669 mSDsCounter, 0 mSdLazyCounter, 56245 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66988.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33273 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 56253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 140.89ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78547.49ms IncrementalHoareTripleChecker+Time [2021-11-04 03:14:39,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33273 Valid, 0 Invalid, 56253 Unknown, 0 Unchecked, 140.89ms Time], IncrementalHoareTripleChecker [8 Valid, 56245 Invalid, 0 Unknown, 0 Unchecked, 78547.49ms Time] [2021-11-04 03:14:39,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61985 states. [2021-11-04 03:14:40,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61985 to 15708. [2021-11-04 03:14:40,155 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) [2021-11-04 03:14:40,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15708 states to 15708 states and 22630 transitions. [2021-11-04 03:14:40,185 INFO L78 Accepts]: Start accepts. Automaton has 15708 states and 22630 transitions. Word has length 124 [2021-11-04 03:14:40,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:14:40,187 INFO L470 AbstractCegarLoop]: Abstraction has 15708 states and 22630 transitions. [2021-11-04 03:14:40,187 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) [2021-11-04 03:14:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 15708 states and 22630 transitions. [2021-11-04 03:14:40,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-04 03:14:40,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:14:40,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:14:40,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 03:14:40,190 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)] === [2021-11-04 03:14:40,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:14:40,191 INFO L85 PathProgramCache]: Analyzing trace with hash 347341648, now seen corresponding path program 1 times [2021-11-04 03:14:40,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:14:40,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045086323] [2021-11-04 03:14:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:14:40,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:14:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:14:40,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:14:40,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:14:40,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045086323] [2021-11-04 03:14:40,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045086323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:14:40,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:14:40,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:14:40,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601558667] [2021-11-04 03:14:40,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:14:40,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:14:40,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:14:40,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:14:40,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:14:40,384 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) [2021-11-04 03:15:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:15:46,905 INFO L93 Difference]: Finished difference Result 77746 states and 112212 transitions. [2021-11-04 03:15:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:15:46,906 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 [2021-11-04 03:15:46,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:15:47,076 INFO L225 Difference]: With dead ends: 77746 [2021-11-04 03:15:47,077 INFO L226 Difference]: Without dead ends: 62041 [2021-11-04 03:15:47,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.45ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:15:47,141 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 44277 mSDsluCounter, 22641 mSDsCounter, 0 mSdLazyCounter, 34054 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54136.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44277 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 34068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 123.06ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 34054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64628.18ms IncrementalHoareTripleChecker+Time [2021-11-04 03:15:47,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44277 Valid, 0 Invalid, 34068 Unknown, 0 Unchecked, 123.06ms Time], IncrementalHoareTripleChecker [14 Valid, 34054 Invalid, 0 Unknown, 0 Unchecked, 64628.18ms Time] [2021-11-04 03:15:47,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62041 states. [2021-11-04 03:15:47,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62041 to 15712. [2021-11-04 03:15:47,834 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) [2021-11-04 03:15:47,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15712 states to 15712 states and 22634 transitions. [2021-11-04 03:15:47,871 INFO L78 Accepts]: Start accepts. Automaton has 15712 states and 22634 transitions. Word has length 127 [2021-11-04 03:15:47,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:15:47,871 INFO L470 AbstractCegarLoop]: Abstraction has 15712 states and 22634 transitions. [2021-11-04 03:15:47,872 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) [2021-11-04 03:15:47,872 INFO L276 IsEmpty]: Start isEmpty. Operand 15712 states and 22634 transitions. [2021-11-04 03:15:47,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-04 03:15:47,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:15:47,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:15:47,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 03:15:47,874 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)] === [2021-11-04 03:15:47,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:15:47,874 INFO L85 PathProgramCache]: Analyzing trace with hash 38528940, now seen corresponding path program 1 times [2021-11-04 03:15:47,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:15:47,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021459646] [2021-11-04 03:15:47,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:15:47,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:15:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:15:48,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:15:48,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:15:48,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021459646] [2021-11-04 03:15:48,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021459646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:15:48,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:15:48,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:15:48,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127503815] [2021-11-04 03:15:48,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:15:48,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:15:48,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:15:48,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:15:48,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:15:48,057 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) [2021-11-04 03:17:45,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:17:45,642 INFO L93 Difference]: Finished difference Result 77746 states and 112208 transitions. [2021-11-04 03:17:45,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:17:45,643 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 [2021-11-04 03:17:45,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:17:45,808 INFO L225 Difference]: With dead ends: 77746 [2021-11-04 03:17:45,809 INFO L226 Difference]: Without dead ends: 62037 [2021-11-04 03:17:45,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.63ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:17:45,851 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 33268 mSDsluCounter, 33697 mSDsCounter, 0 mSdLazyCounter, 56289 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93359.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33268 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 56297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 211.22ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114878.34ms IncrementalHoareTripleChecker+Time [2021-11-04 03:17:45,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33268 Valid, 0 Invalid, 56297 Unknown, 0 Unchecked, 211.22ms Time], IncrementalHoareTripleChecker [8 Valid, 56289 Invalid, 0 Unknown, 0 Unchecked, 114878.34ms Time] [2021-11-04 03:17:46,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62037 states. [2021-11-04 03:17:46,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62037 to 15716. [2021-11-04 03:17:46,513 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) [2021-11-04 03:17:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15716 states to 15716 states and 22638 transitions. [2021-11-04 03:17:46,548 INFO L78 Accepts]: Start accepts. Automaton has 15716 states and 22638 transitions. Word has length 129 [2021-11-04 03:17:46,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:17:46,549 INFO L470 AbstractCegarLoop]: Abstraction has 15716 states and 22638 transitions. [2021-11-04 03:17:46,549 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) [2021-11-04 03:17:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand 15716 states and 22638 transitions. [2021-11-04 03:17:46,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-04 03:17:46,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:17:46,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:17:46,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 03:17:46,551 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)] === [2021-11-04 03:17:46,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:17:46,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1634946294, now seen corresponding path program 1 times [2021-11-04 03:17:46,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:17:46,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268012137] [2021-11-04 03:17:46,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:17:46,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:17:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:17:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:17:46,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:17:46,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268012137] [2021-11-04 03:17:46,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268012137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:17:46,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:17:46,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:17:46,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855617248] [2021-11-04 03:17:46,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:17:46,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:17:46,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:17:46,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:17:46,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:17:46,753 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) [2021-11-04 03:20:05,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:20:05,428 INFO L93 Difference]: Finished difference Result 77750 states and 112208 transitions. [2021-11-04 03:20:05,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:20:05,429 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 [2021-11-04 03:20:05,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:20:05,696 INFO L225 Difference]: With dead ends: 77750 [2021-11-04 03:20:05,696 INFO L226 Difference]: Without dead ends: 62037 [2021-11-04 03:20:05,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.29ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:20:05,721 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 33266 mSDsluCounter, 33697 mSDsCounter, 0 mSdLazyCounter, 56295 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105833.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33266 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 56303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 228.61ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135749.12ms IncrementalHoareTripleChecker+Time [2021-11-04 03:20:05,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33266 Valid, 0 Invalid, 56303 Unknown, 0 Unchecked, 228.61ms Time], IncrementalHoareTripleChecker [8 Valid, 56295 Invalid, 0 Unknown, 0 Unchecked, 135749.12ms Time] [2021-11-04 03:20:05,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62037 states. [2021-11-04 03:20:06,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62037 to 15720. [2021-11-04 03:20:06,275 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) [2021-11-04 03:20:06,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15720 states to 15720 states and 22642 transitions. [2021-11-04 03:20:06,301 INFO L78 Accepts]: Start accepts. Automaton has 15720 states and 22642 transitions. Word has length 132 [2021-11-04 03:20:06,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:20:06,301 INFO L470 AbstractCegarLoop]: Abstraction has 15720 states and 22642 transitions. [2021-11-04 03:20:06,301 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) [2021-11-04 03:20:06,301 INFO L276 IsEmpty]: Start isEmpty. Operand 15720 states and 22642 transitions. [2021-11-04 03:20:06,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-04 03:20:06,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:20:06,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:20:06,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 03:20:06,303 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)] === [2021-11-04 03:20:06,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:20:06,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1340369784, now seen corresponding path program 1 times [2021-11-04 03:20:06,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:20:06,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13846499] [2021-11-04 03:20:06,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:20:06,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:20:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:20:06,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:20:06,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:20:06,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13846499] [2021-11-04 03:20:06,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13846499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:20:06,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:20:06,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:20:06,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235553439] [2021-11-04 03:20:06,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:20:06,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:20:06,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:20:06,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:20:06,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:20:06,494 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) [2021-11-04 03:21:58,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:21:58,979 INFO L93 Difference]: Finished difference Result 77758 states and 112212 transitions. [2021-11-04 03:21:58,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:21:58,979 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 [2021-11-04 03:21:58,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:21:59,118 INFO L225 Difference]: With dead ends: 77758 [2021-11-04 03:21:59,118 INFO L226 Difference]: Without dead ends: 62041 [2021-11-04 03:21:59,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.01ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:21:59,164 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 44252 mSDsluCounter, 22726 mSDsCounter, 0 mSdLazyCounter, 34251 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83195.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44252 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 34262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 185.48ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 34251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109663.97ms IncrementalHoareTripleChecker+Time [2021-11-04 03:21:59,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44252 Valid, 0 Invalid, 34262 Unknown, 0 Unchecked, 185.48ms Time], IncrementalHoareTripleChecker [11 Valid, 34251 Invalid, 0 Unknown, 0 Unchecked, 109663.97ms Time] [2021-11-04 03:21:59,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62041 states. [2021-11-04 03:21:59,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62041 to 15724. [2021-11-04 03:21:59,833 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) [2021-11-04 03:21:59,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15724 states to 15724 states and 22646 transitions. [2021-11-04 03:21:59,856 INFO L78 Accepts]: Start accepts. Automaton has 15724 states and 22646 transitions. Word has length 135 [2021-11-04 03:21:59,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:21:59,857 INFO L470 AbstractCegarLoop]: Abstraction has 15724 states and 22646 transitions. [2021-11-04 03:21:59,857 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) [2021-11-04 03:21:59,857 INFO L276 IsEmpty]: Start isEmpty. Operand 15724 states and 22646 transitions. [2021-11-04 03:21:59,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-04 03:21:59,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:21:59,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:21:59,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 03:21:59,859 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)] === [2021-11-04 03:21:59,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:21:59,860 INFO L85 PathProgramCache]: Analyzing trace with hash 423059804, now seen corresponding path program 1 times [2021-11-04 03:21:59,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:21:59,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881298171] [2021-11-04 03:21:59,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:21:59,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:21:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:22:00,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:22:00,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:22:00,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881298171] [2021-11-04 03:22:00,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881298171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:22:00,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:22:00,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:22:00,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411018715] [2021-11-04 03:22:00,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:22:00,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:22:00,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:22:00,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:22:00,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:22:00,060 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) Killed by 15