./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 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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-5b36d44 [2021-11-07 12:27:23,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 12:27:23,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 12:27:23,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 12:27:23,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 12:27:23,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 12:27:23,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 12:27:23,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 12:27:23,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 12:27:23,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 12:27:23,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 12:27:23,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 12:27:23,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 12:27:23,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 12:27:23,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 12:27:23,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 12:27:23,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 12:27:23,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 12:27:23,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 12:27:23,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 12:27:23,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 12:27:23,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 12:27:23,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 12:27:23,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 12:27:23,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 12:27:23,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 12:27:23,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 12:27:23,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 12:27:23,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 12:27:23,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 12:27:23,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 12:27:23,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 12:27:23,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 12:27:23,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 12:27:23,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 12:27:23,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 12:27:23,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 12:27:23,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 12:27:23,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 12:27:23,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 12:27:23,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 12:27:23,214 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 12:27:23,241 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 12:27:23,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 12:27:23,241 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 12:27:23,242 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 12:27:23,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 12:27:23,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 12:27:23,243 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 12:27:23,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 12:27:23,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 12:27:23,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 12:27:23,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 12:27:23,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 12:27:23,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 12:27:23,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 12:27:23,245 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 12:27:23,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 12:27:23,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 12:27:23,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 12:27:23,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 12:27:23,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:27:23,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 12:27:23,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 12:27:23,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 12:27:23,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 12:27:23,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 12:27:23,247 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 12:27:23,247 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 12:27:23,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 12:27:23,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 12:27:23,249 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 709e000bdea0bf1517f1edc69f1d5199e729e3cf1effc12ce3f796e9f1102469 [2021-11-07 12:27:23,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 12:27:23,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 12:27:23,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 12:27:23,532 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 12:27:23,533 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 12:27:23,534 INFO L432 ainManager$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 [2021-11-07 12:27:23,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073181cfc/81cc8e41cc754c5282bebaed5d30246b/FLAG51474ee5b [2021-11-07 12:27:24,325 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 12:27:24,326 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 [2021-11-07 12:27:24,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073181cfc/81cc8e41cc754c5282bebaed5d30246b/FLAG51474ee5b [2021-11-07 12:27:24,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073181cfc/81cc8e41cc754c5282bebaed5d30246b [2021-11-07 12:27:24,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 12:27:24,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 12:27:24,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 12:27:24,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 12:27:24,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 12:27:24,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:27:24" (1/1) ... [2021-11-07 12:27:24,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6142f216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:24, skipping insertion in model container [2021-11-07 12:27:24,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:27:24" (1/1) ... [2021-11-07 12:27:24,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 12:27:24,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 12:27:25,962 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] [2021-11-07 12:27:26,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:27:26,069 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 12:27:26,370 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] [2021-11-07 12:27:26,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:27:26,497 INFO L208 MainTranslator]: Completed translation [2021-11-07 12:27:26,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:26 WrapperNode [2021-11-07 12:27:26,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 12:27:26,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 12:27:26,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 12:27:26,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 12:27:26,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:26" (1/1) ... [2021-11-07 12:27:26,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:26" (1/1) ... [2021-11-07 12:27:27,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 12:27:27,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 12:27:27,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 12:27:27,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 12:27:27,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:26" (1/1) ... [2021-11-07 12:27:27,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:26" (1/1) ... [2021-11-07 12:27:28,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:26" (1/1) ... [2021-11-07 12:27:28,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:26" (1/1) ... [2021-11-07 12:27:28,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:26" (1/1) ... [2021-11-07 12:27:29,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:26" (1/1) ... [2021-11-07 12:27:29,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:26" (1/1) ... [2021-11-07 12:27:29,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 12:27:29,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 12:27:29,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 12:27:29,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 12:27:29,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:26" (1/1) ... [2021-11-07 12:27:29,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:27:29,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:27:29,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 12:27:29,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 12:27:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 12:27:29,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 12:27:29,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 12:27:29,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 12:27:29,732 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-07 12:27:29,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 12:27:29,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 12:27:29,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 12:27:29,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 12:27:29,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 12:27:29,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 12:27:29,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 12:27:29,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 12:27:29,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 12:27:29,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 12:27:29,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 12:27:30,662 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 12:27:30,814 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 12:27:51,348 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; [2021-11-07 12:27:51,348 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3546: assume vfio_pci_ioctl_#t~short204; [2021-11-07 12:27:51,349 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4594: assume vfio_pci_ioctl_#t~short204; [2021-11-07 12:27:51,349 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; [2021-11-07 12:27:51,350 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; [2021-11-07 12:27:51,350 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); [2021-11-07 12:27:51,350 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); [2021-11-07 12:27:51,350 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; [2021-11-07 12:27:51,350 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); [2021-11-07 12:27:51,351 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); [2021-11-07 12:27:51,351 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); [2021-11-07 12:27:51,351 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; [2021-11-07 12:27:51,351 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); [2021-11-07 12:27:51,351 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; [2021-11-07 12:27:51,352 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; [2021-11-07 12:27:51,352 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765: assume !vfio_pci_ioctl_#t~short213; [2021-11-07 12:27:51,352 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; [2021-11-07 12:27:51,352 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; [2021-11-07 12:27:51,352 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; [2021-11-07 12:27:51,352 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-5: assume !vfio_pci_ioctl_#t~short213; [2021-11-07 12:27:51,353 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; [2021-11-07 12:27:51,353 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; [2021-11-07 12:27:51,391 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 12:27:51,391 INFO L299 CfgBuilder]: Removed 6923 assume(true) statements. [2021-11-07 12:27:51,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:27:51 BoogieIcfgContainer [2021-11-07 12:27:51,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 12:27:51,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 12:27:51,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 12:27:51,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 12:27:51,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:27:24" (1/3) ... [2021-11-07 12:27:51,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd5de58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:27:51, skipping insertion in model container [2021-11-07 12:27:51,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:26" (2/3) ... [2021-11-07 12:27:51,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd5de58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:27:51, skipping insertion in model container [2021-11-07 12:27:51,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:27:51" (3/3) ... [2021-11-07 12:27:51,405 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i [2021-11-07 12:27:51,409 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 12:27:51,409 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-07 12:27:51,521 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 12:27:51,527 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 12:27:51,528 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-07 12:27:51,624 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) [2021-11-07 12:27:51,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 12:27:51,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:27:51,649 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] [2021-11-07 12:27:51,650 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)] === [2021-11-07 12:27:51,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:27:51,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1086763830, now seen corresponding path program 1 times [2021-11-07 12:27:51,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:27:51,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852268694] [2021-11-07 12:27:51,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:27:51,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:27:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:27:52,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:27:52,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:27:52,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852268694] [2021-11-07 12:27:52,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852268694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:27:52,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:27:52,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:27:52,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643634792] [2021-11-07 12:27:52,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:27:52,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:27:52,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:27:52,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:27:52,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:27:52,232 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) [2021-11-07 12:27:52,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:27:52,624 INFO L93 Difference]: Finished difference Result 15969 states and 23160 transitions. [2021-11-07 12:27:52,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:27:52,626 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 [2021-11-07 12:27:52,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:27:52,685 INFO L225 Difference]: With dead ends: 15969 [2021-11-07 12:27:52,685 INFO L226 Difference]: Without dead ends: 8155 [2021-11-07 12:27:52,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.82ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:27:52,713 INFO L933 BasicCegarLoop]: 11246 mSDtfsCounter, 416 mSDsluCounter, 11215 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 22461 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.72ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.48ms IncrementalHoareTripleChecker+Time [2021-11-07 12:27:52,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 22461 Invalid, 29 Unknown, 0 Unchecked, 43.72ms Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 68.48ms Time] [2021-11-07 12:27:52,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8155 states. [2021-11-07 12:27:52,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8155 to 8123. [2021-11-07 12:27:52,940 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) [2021-11-07 12:27:52,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8123 states to 8123 states and 11626 transitions. [2021-11-07 12:27:52,966 INFO L78 Accepts]: Start accepts. Automaton has 8123 states and 11626 transitions. Word has length 32 [2021-11-07 12:27:52,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:27:52,967 INFO L470 AbstractCegarLoop]: Abstraction has 8123 states and 11626 transitions. [2021-11-07 12:27:52,967 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) [2021-11-07 12:27:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 8123 states and 11626 transitions. [2021-11-07 12:27:52,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 12:27:52,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:27:52,969 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] [2021-11-07 12:27:52,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 12:27:52,969 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)] === [2021-11-07 12:27:52,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:27:52,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1709174855, now seen corresponding path program 1 times [2021-11-07 12:27:52,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:27:52,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651287913] [2021-11-07 12:27:52,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:27:52,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:27:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:27:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:27:53,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:27:53,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651287913] [2021-11-07 12:27:53,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651287913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:27:53,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:27:53,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:27:53,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679031790] [2021-11-07 12:27:53,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:27:53,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:27:53,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:27:53,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:27:53,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:27:53,114 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) [2021-11-07 12:27:53,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:27:53,710 INFO L93 Difference]: Finished difference Result 23816 states and 34243 transitions. [2021-11-07 12:27:53,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:27:53,711 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 [2021-11-07 12:27:53,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:27:53,781 INFO L225 Difference]: With dead ends: 23816 [2021-11-07 12:27:53,781 INFO L226 Difference]: Without dead ends: 15696 [2021-11-07 12:27:53,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.82ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:27:53,804 INFO L933 BasicCegarLoop]: 22062 mSDtfsCounter, 11197 mSDsluCounter, 10933 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 234.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11197 SdHoareTripleChecker+Valid, 32995 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.73ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 259.55ms IncrementalHoareTripleChecker+Time [2021-11-07 12:27:53,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11197 Valid, 32995 Invalid, 16 Unknown, 0 Unchecked, 43.73ms Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 259.55ms Time] [2021-11-07 12:27:53,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15696 states. [2021-11-07 12:27:54,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15696 to 15688. [2021-11-07 12:27:54,469 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) [2021-11-07 12:27:54,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15688 states to 15688 states and 22610 transitions. [2021-11-07 12:27:54,525 INFO L78 Accepts]: Start accepts. Automaton has 15688 states and 22610 transitions. Word has length 34 [2021-11-07 12:27:54,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:27:54,526 INFO L470 AbstractCegarLoop]: Abstraction has 15688 states and 22610 transitions. [2021-11-07 12:27:54,526 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) [2021-11-07 12:27:54,527 INFO L276 IsEmpty]: Start isEmpty. Operand 15688 states and 22610 transitions. [2021-11-07 12:27:54,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 12:27:54,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:27:54,530 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] [2021-11-07 12:27:54,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 12:27:54,531 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)] === [2021-11-07 12:27:54,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:27:54,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1068528312, now seen corresponding path program 1 times [2021-11-07 12:27:54,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:27:54,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446679550] [2021-11-07 12:27:54,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:27:54,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:27:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:27:54,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:27:54,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:27:54,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446679550] [2021-11-07 12:27:54,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446679550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:27:54,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:27:54,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:27:54,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812495160] [2021-11-07 12:27:54,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:27:54,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:27:54,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:27:54,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:27:54,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:27:54,861 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) [2021-11-07 12:27:55,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:27:55,187 INFO L93 Difference]: Finished difference Result 31389 states and 45249 transitions. [2021-11-07 12:27:55,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:27:55,188 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 [2021-11-07 12:27:55,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:27:55,249 INFO L225 Difference]: With dead ends: 31389 [2021-11-07 12:27:55,250 INFO L226 Difference]: Without dead ends: 15704 [2021-11-07 12:27:55,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:27:55,291 INFO L933 BasicCegarLoop]: 11233 mSDtfsCounter, 0 mSDsluCounter, 11193 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22426 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.82ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.80ms IncrementalHoareTripleChecker+Time [2021-11-07 12:27:55,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22426 Invalid, 62 Unknown, 0 Unchecked, 20.82ms Time], IncrementalHoareTripleChecker [14 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 77.80ms Time] [2021-11-07 12:27:55,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15704 states. [2021-11-07 12:27:55,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15704 to 15704. [2021-11-07 12:27:55,663 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) [2021-11-07 12:27:55,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15704 states to 15704 states and 22626 transitions. [2021-11-07 12:27:55,698 INFO L78 Accepts]: Start accepts. Automaton has 15704 states and 22626 transitions. Word has length 124 [2021-11-07 12:27:55,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:27:55,698 INFO L470 AbstractCegarLoop]: Abstraction has 15704 states and 22626 transitions. [2021-11-07 12:27:55,698 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) [2021-11-07 12:27:55,699 INFO L276 IsEmpty]: Start isEmpty. Operand 15704 states and 22626 transitions. [2021-11-07 12:27:55,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 12:27:55,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:27:55,702 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] [2021-11-07 12:27:55,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 12:27:55,703 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)] === [2021-11-07 12:27:55,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:27:55,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1460709686, now seen corresponding path program 1 times [2021-11-07 12:27:55,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:27:55,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726793427] [2021-11-07 12:27:55,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:27:55,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:27:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:27:55,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:27:55,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:27:55,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726793427] [2021-11-07 12:27:55,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726793427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:27:55,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:27:55,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:27:55,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598942852] [2021-11-07 12:27:55,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:27:55,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:27:55,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:27:55,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:27:55,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:27:55,884 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) [2021-11-07 12:27:57,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:27:57,188 INFO L93 Difference]: Finished difference Result 77686 states and 112156 transitions. [2021-11-07 12:27:57,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:27:57,189 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 [2021-11-07 12:27:57,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:27:57,352 INFO L225 Difference]: With dead ends: 77686 [2021-11-07 12:27:57,352 INFO L226 Difference]: Without dead ends: 61985 [2021-11-07 12:27:57,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.13ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:27:57,411 INFO L933 BasicCegarLoop]: 22501 mSDtfsCounter, 33273 mSDsluCounter, 33669 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33273 SdHoareTripleChecker+Valid, 56170 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 84.97ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103.35ms IncrementalHoareTripleChecker+Time [2021-11-07 12:27:57,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33273 Valid, 56170 Invalid, 83 Unknown, 0 Unchecked, 84.97ms Time], IncrementalHoareTripleChecker [8 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 103.35ms Time] [2021-11-07 12:27:57,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61985 states. [2021-11-07 12:27:58,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61985 to 15708. [2021-11-07 12:27:58,196 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) [2021-11-07 12:27:58,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15708 states to 15708 states and 22630 transitions. [2021-11-07 12:27:58,227 INFO L78 Accepts]: Start accepts. Automaton has 15708 states and 22630 transitions. Word has length 124 [2021-11-07 12:27:58,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:27:58,228 INFO L470 AbstractCegarLoop]: Abstraction has 15708 states and 22630 transitions. [2021-11-07 12:27:58,228 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) [2021-11-07 12:27:58,228 INFO L276 IsEmpty]: Start isEmpty. Operand 15708 states and 22630 transitions. [2021-11-07 12:27:58,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 12:27:58,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:27:58,230 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] [2021-11-07 12:27:58,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 12:27:58,230 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)] === [2021-11-07 12:27:58,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:27:58,231 INFO L85 PathProgramCache]: Analyzing trace with hash 347341648, now seen corresponding path program 1 times [2021-11-07 12:27:58,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:27:58,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468634677] [2021-11-07 12:27:58,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:27:58,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:27:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:27:58,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:27:58,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:27:58,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468634677] [2021-11-07 12:27:58,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468634677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:27:58,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:27:58,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:27:58,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365269096] [2021-11-07 12:27:58,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:27:58,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:27:58,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:27:58,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:27:58,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:27:58,403 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) [2021-11-07 12:27:59,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:27:59,700 INFO L93 Difference]: Finished difference Result 77746 states and 112212 transitions. [2021-11-07 12:27:59,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:27:59,701 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 [2021-11-07 12:27:59,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:27:59,877 INFO L225 Difference]: With dead ends: 77746 [2021-11-07 12:27:59,878 INFO L226 Difference]: Without dead ends: 62041 [2021-11-07 12:27:59,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.72ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:27:59,911 INFO L933 BasicCegarLoop]: 11360 mSDtfsCounter, 44277 mSDsluCounter, 22641 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44277 SdHoareTripleChecker+Valid, 34001 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.98ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.97ms IncrementalHoareTripleChecker+Time [2021-11-07 12:27:59,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44277 Valid, 34001 Invalid, 67 Unknown, 0 Unchecked, 53.98ms Time], IncrementalHoareTripleChecker [14 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 75.97ms Time] [2021-11-07 12:27:59,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62041 states. [2021-11-07 12:28:00,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62041 to 15712. [2021-11-07 12:28:00,409 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) [2021-11-07 12:28:00,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15712 states to 15712 states and 22634 transitions. [2021-11-07 12:28:00,566 INFO L78 Accepts]: Start accepts. Automaton has 15712 states and 22634 transitions. Word has length 127 [2021-11-07 12:28:00,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:28:00,566 INFO L470 AbstractCegarLoop]: Abstraction has 15712 states and 22634 transitions. [2021-11-07 12:28:00,567 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) [2021-11-07 12:28:00,567 INFO L276 IsEmpty]: Start isEmpty. Operand 15712 states and 22634 transitions. [2021-11-07 12:28:00,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-07 12:28:00,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:28:00,569 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] [2021-11-07 12:28:00,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 12:28:00,569 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)] === [2021-11-07 12:28:00,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:28:00,570 INFO L85 PathProgramCache]: Analyzing trace with hash 38528940, now seen corresponding path program 1 times [2021-11-07 12:28:00,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:28:00,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968472377] [2021-11-07 12:28:00,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:28:00,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:28:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:28:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:28:00,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:28:00,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968472377] [2021-11-07 12:28:00,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968472377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:28:00,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:28:00,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:28:00,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311433480] [2021-11-07 12:28:00,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:28:00,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:28:00,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:28:00,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:28:00,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:28:00,743 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) [2021-11-07 12:28:02,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:28:02,121 INFO L93 Difference]: Finished difference Result 77746 states and 112208 transitions. [2021-11-07 12:28:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:28:02,122 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 [2021-11-07 12:28:02,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:28:02,266 INFO L225 Difference]: With dead ends: 77746 [2021-11-07 12:28:02,267 INFO L226 Difference]: Without dead ends: 62037 [2021-11-07 12:28:02,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.56ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:28:02,313 INFO L933 BasicCegarLoop]: 22516 mSDtfsCounter, 33268 mSDsluCounter, 33697 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33268 SdHoareTripleChecker+Valid, 56213 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.05ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.20ms IncrementalHoareTripleChecker+Time [2021-11-07 12:28:02,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33268 Valid, 56213 Invalid, 84 Unknown, 0 Unchecked, 58.05ms Time], IncrementalHoareTripleChecker [8 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 92.20ms Time] [2021-11-07 12:28:02,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62037 states. [2021-11-07 12:28:02,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62037 to 15716. [2021-11-07 12:28:02,982 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) [2021-11-07 12:28:03,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15716 states to 15716 states and 22638 transitions. [2021-11-07 12:28:03,009 INFO L78 Accepts]: Start accepts. Automaton has 15716 states and 22638 transitions. Word has length 129 [2021-11-07 12:28:03,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:28:03,009 INFO L470 AbstractCegarLoop]: Abstraction has 15716 states and 22638 transitions. [2021-11-07 12:28:03,009 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) [2021-11-07 12:28:03,009 INFO L276 IsEmpty]: Start isEmpty. Operand 15716 states and 22638 transitions. [2021-11-07 12:28:03,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-07 12:28:03,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:28:03,011 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] [2021-11-07 12:28:03,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 12:28:03,011 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)] === [2021-11-07 12:28:03,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:28:03,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1634946294, now seen corresponding path program 1 times [2021-11-07 12:28:03,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:28:03,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982820239] [2021-11-07 12:28:03,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:28:03,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:28:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:28:03,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:28:03,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:28:03,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982820239] [2021-11-07 12:28:03,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982820239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:28:03,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:28:03,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:28:03,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802588890] [2021-11-07 12:28:03,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:28:03,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:28:03,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:28:03,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:28:03,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:28:03,183 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) [2021-11-07 12:28:04,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:28:04,882 INFO L93 Difference]: Finished difference Result 77750 states and 112208 transitions. [2021-11-07 12:28:04,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:28:04,882 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 [2021-11-07 12:28:04,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:28:04,977 INFO L225 Difference]: With dead ends: 77750 [2021-11-07 12:28:04,977 INFO L226 Difference]: Without dead ends: 62037 [2021-11-07 12:28:05,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.77ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:28:05,009 INFO L933 BasicCegarLoop]: 22518 mSDtfsCounter, 33266 mSDsluCounter, 33697 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33266 SdHoareTripleChecker+Valid, 56215 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.04ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 111.07ms IncrementalHoareTripleChecker+Time [2021-11-07 12:28:05,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33266 Valid, 56215 Invalid, 88 Unknown, 0 Unchecked, 55.04ms Time], IncrementalHoareTripleChecker [8 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 111.07ms Time] [2021-11-07 12:28:05,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62037 states. [2021-11-07 12:28:05,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62037 to 15720. [2021-11-07 12:28:05,709 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) [2021-11-07 12:28:05,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15720 states to 15720 states and 22642 transitions. [2021-11-07 12:28:05,732 INFO L78 Accepts]: Start accepts. Automaton has 15720 states and 22642 transitions. Word has length 132 [2021-11-07 12:28:05,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:28:05,733 INFO L470 AbstractCegarLoop]: Abstraction has 15720 states and 22642 transitions. [2021-11-07 12:28:05,733 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) [2021-11-07 12:28:05,733 INFO L276 IsEmpty]: Start isEmpty. Operand 15720 states and 22642 transitions. [2021-11-07 12:28:05,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-07 12:28:05,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:28:05,735 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] [2021-11-07 12:28:05,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 12:28:05,735 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)] === [2021-11-07 12:28:05,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:28:05,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1340369784, now seen corresponding path program 1 times [2021-11-07 12:28:05,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:28:05,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071526473] [2021-11-07 12:28:05,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:28:05,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:28:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:28:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:28:06,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:28:06,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071526473] [2021-11-07 12:28:06,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071526473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:28:06,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:28:06,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:28:06,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849255784] [2021-11-07 12:28:06,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:28:06,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:28:06,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:28:06,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:28:06,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:28:06,027 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) [2021-11-07 12:28:07,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:28:07,568 INFO L93 Difference]: Finished difference Result 77758 states and 112212 transitions. [2021-11-07 12:28:07,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:28:07,569 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 [2021-11-07 12:28:07,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:28:07,669 INFO L225 Difference]: With dead ends: 77758 [2021-11-07 12:28:07,669 INFO L226 Difference]: Without dead ends: 62041 [2021-11-07 12:28:07,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.67ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:28:07,705 INFO L933 BasicCegarLoop]: 11456 mSDtfsCounter, 44252 mSDsluCounter, 22726 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44252 SdHoareTripleChecker+Valid, 34182 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.09ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.12ms IncrementalHoareTripleChecker+Time [2021-11-07 12:28:07,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44252 Valid, 34182 Invalid, 80 Unknown, 0 Unchecked, 48.09ms Time], IncrementalHoareTripleChecker [11 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 85.12ms Time] [2021-11-07 12:28:07,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62041 states. [2021-11-07 12:28:08,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62041 to 15724. [2021-11-07 12:28:08,439 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) [2021-11-07 12:28:08,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15724 states to 15724 states and 22646 transitions. [2021-11-07 12:28:08,461 INFO L78 Accepts]: Start accepts. Automaton has 15724 states and 22646 transitions. Word has length 135 [2021-11-07 12:28:08,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:28:08,461 INFO L470 AbstractCegarLoop]: Abstraction has 15724 states and 22646 transitions. [2021-11-07 12:28:08,462 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) [2021-11-07 12:28:08,462 INFO L276 IsEmpty]: Start isEmpty. Operand 15724 states and 22646 transitions. [2021-11-07 12:28:08,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 12:28:08,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:28:08,463 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] [2021-11-07 12:28:08,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 12:28:08,464 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)] === [2021-11-07 12:28:08,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:28:08,464 INFO L85 PathProgramCache]: Analyzing trace with hash 423059804, now seen corresponding path program 1 times [2021-11-07 12:28:08,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:28:08,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403069068] [2021-11-07 12:28:08,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:28:08,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:28:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:28:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:28:08,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:28:08,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403069068] [2021-11-07 12:28:08,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403069068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:28:08,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:28:08,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:28:08,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021077165] [2021-11-07 12:28:08,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:28:08,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:28:08,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:28:08,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:28:08,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:28:08,646 INFO L87 Difference]: Start difference. First operand 15724 states and 22646 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:28:10,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:28:10,569 INFO L93 Difference]: Finished difference Result 77742 states and 112192 transitions. [2021-11-07 12:28:10,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:28:10,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-07 12:28:10,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:28:10,660 INFO L225 Difference]: With dead ends: 77742 [2021-11-07 12:28:10,660 INFO L226 Difference]: Without dead ends: 62021 [2021-11-07 12:28:10,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.89ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:28:10,684 INFO L933 BasicCegarLoop]: 22516 mSDtfsCounter, 33260 mSDsluCounter, 33691 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33260 SdHoareTripleChecker+Valid, 56207 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.11ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.15ms IncrementalHoareTripleChecker+Time [2021-11-07 12:28:10,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33260 Valid, 56207 Invalid, 88 Unknown, 0 Unchecked, 62.11ms Time], IncrementalHoareTripleChecker [8 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 95.15ms Time] [2021-11-07 12:28:10,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62021 states. [2021-11-07 12:28:11,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62021 to 15728. [2021-11-07 12:28:11,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15728 states, 15721 states have (on average 1.4407480440175562) internal successors, (22650), 15727 states have internal predecessors, (22650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:28:11,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15728 states to 15728 states and 22650 transitions. [2021-11-07 12:28:11,291 INFO L78 Accepts]: Start accepts. Automaton has 15728 states and 22650 transitions. Word has length 137 [2021-11-07 12:28:11,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:28:11,292 INFO L470 AbstractCegarLoop]: Abstraction has 15728 states and 22650 transitions. [2021-11-07 12:28:11,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:28:11,292 INFO L276 IsEmpty]: Start isEmpty. Operand 15728 states and 22650 transitions. [2021-11-07 12:28:11,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 12:28:11,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:28:11,293 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, 1, 1, 1] [2021-11-07 12:28:11,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 12:28:11,294 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:28:11,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:28:11,294 INFO L85 PathProgramCache]: Analyzing trace with hash -397844976, now seen corresponding path program 1 times [2021-11-07 12:28:11,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:28:11,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259195725] [2021-11-07 12:28:11,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:28:11,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:28:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:28:11,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:28:11,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:28:11,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259195725] [2021-11-07 12:28:11,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259195725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:28:11,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:28:11,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:28:11,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865707046] [2021-11-07 12:28:11,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:28:11,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:28:11,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:28:11,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:28:11,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:28:11,607 INFO L87 Difference]: Start difference. First operand 15728 states and 22650 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:28:13,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:28:13,686 INFO L93 Difference]: Finished difference Result 77655 states and 112086 transitions. [2021-11-07 12:28:13,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:28:13,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 12:28:13,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:28:13,778 INFO L225 Difference]: With dead ends: 77655 [2021-11-07 12:28:13,779 INFO L226 Difference]: Without dead ends: 61930 [2021-11-07 12:28:13,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.26ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:28:13,805 INFO L933 BasicCegarLoop]: 11523 mSDtfsCounter, 44169 mSDsluCounter, 44474 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44169 SdHoareTripleChecker+Valid, 55997 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.11ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.58ms IncrementalHoareTripleChecker+Time [2021-11-07 12:28:13,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44169 Valid, 55997 Invalid, 88 Unknown, 0 Unchecked, 54.11ms Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 98.58ms Time] [2021-11-07 12:28:13,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61930 states. [2021-11-07 12:28:14,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61930 to 15732. [2021-11-07 12:28:14,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15732 states, 15725 states have (on average 1.4406359300476947) internal successors, (22654), 15731 states have internal predecessors, (22654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:28:14,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15732 states to 15732 states and 22654 transitions. [2021-11-07 12:28:14,558 INFO L78 Accepts]: Start accepts. Automaton has 15732 states and 22654 transitions. Word has length 140 [2021-11-07 12:28:14,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:28:14,559 INFO L470 AbstractCegarLoop]: Abstraction has 15732 states and 22654 transitions. [2021-11-07 12:28:14,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:28:14,559 INFO L276 IsEmpty]: Start isEmpty. Operand 15732 states and 22654 transitions. [2021-11-07 12:28:14,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-07 12:28:14,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:28:14,560 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, 1, 1, 1, 1, 1] [2021-11-07 12:28:14,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 12:28:14,560 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:28:14,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:28:14,561 INFO L85 PathProgramCache]: Analyzing trace with hash -286403660, now seen corresponding path program 1 times [2021-11-07 12:28:14,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:28:14,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3486348] [2021-11-07 12:28:14,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:28:14,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:28:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:28:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:28:14,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:28:14,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3486348] [2021-11-07 12:28:14,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3486348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:28:14,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:28:14,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:28:14,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393049199] [2021-11-07 12:28:14,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:28:14,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:28:14,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:28:14,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:28:14,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:28:14,775 INFO L87 Difference]: Start difference. First operand 15732 states and 22654 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:28:17,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:28:17,070 INFO L93 Difference]: Finished difference Result 77054 states and 111432 transitions. [2021-11-07 12:28:17,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 12:28:17,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-07 12:28:17,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:28:17,168 INFO L225 Difference]: With dead ends: 77054 [2021-11-07 12:28:17,169 INFO L226 Difference]: Without dead ends: 61325 [2021-11-07 12:28:17,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.74ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:28:17,196 INFO L933 BasicCegarLoop]: 11320 mSDtfsCounter, 65724 mSDsluCounter, 66521 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 65724 SdHoareTripleChecker+Valid, 77841 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 184.43ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.48ms IncrementalHoareTripleChecker+Time [2021-11-07 12:28:17,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65724 Valid, 77841 Invalid, 33 Unknown, 0 Unchecked, 184.43ms Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 31.48ms Time] [2021-11-07 12:28:17,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61325 states. [2021-11-07 12:28:17,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61325 to 15738. [2021-11-07 12:28:17,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15738 states, 15731 states have (on average 1.4404678659970758) internal successors, (22660), 15737 states have internal predecessors, (22660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:28:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15738 states to 15738 states and 22660 transitions. [2021-11-07 12:28:17,999 INFO L78 Accepts]: Start accepts. Automaton has 15738 states and 22660 transitions. Word has length 142 [2021-11-07 12:28:17,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:28:17,999 INFO L470 AbstractCegarLoop]: Abstraction has 15738 states and 22660 transitions. [2021-11-07 12:28:17,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:28:17,999 INFO L276 IsEmpty]: Start isEmpty. Operand 15738 states and 22660 transitions. [2021-11-07 12:28:18,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-07 12:28:18,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:28:18,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:28:18,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 12:28:18,001 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:28:18,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:28:18,001 INFO L85 PathProgramCache]: Analyzing trace with hash 999922544, now seen corresponding path program 1 times [2021-11-07 12:28:18,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:28:18,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669093106] [2021-11-07 12:28:18,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:28:18,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:28:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:28:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:28:18,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:28:18,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669093106] [2021-11-07 12:28:18,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669093106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:28:18,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:28:18,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:28:18,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123194713] [2021-11-07 12:28:18,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:28:18,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:28:18,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:28:18,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:28:18,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:28:18,172 INFO L87 Difference]: Start difference. First operand 15738 states and 22660 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:28:20,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:28:20,138 INFO L93 Difference]: Finished difference Result 62377 states and 89981 transitions. [2021-11-07 12:28:20,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:28:20,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-11-07 12:28:20,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:28:20,208 INFO L225 Difference]: With dead ends: 62377 [2021-11-07 12:28:20,208 INFO L226 Difference]: Without dead ends: 46642