./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.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 e184773994bf5ba427e3ad6843df80bcf1aa90cb50c2ace36ee6ac9939c1f916 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:28:18,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:28:18,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:28:18,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:28:18,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:28:18,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:28:18,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:28:18,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:28:18,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:28:18,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:28:18,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:28:18,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:28:18,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:28:18,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:28:18,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:28:18,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:28:18,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:28:18,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:28:18,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:28:18,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:28:18,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:28:18,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:28:18,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:28:18,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:28:18,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:28:18,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:28:18,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:28:18,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:28:18,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:28:18,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:28:18,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:28:18,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:28:18,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:28:18,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:28:18,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:28:18,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:28:18,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:28:18,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:28:18,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:28:18,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:28:18,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:28:18,741 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:28:18,769 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:28:18,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:28:18,770 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:28:18,770 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:28:18,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:28:18,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:28:18,772 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:28:18,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:28:18,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:28:18,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:28:18,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:28:18,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:28:18,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:28:18,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:28:18,774 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:28:18,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:28:18,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:28:18,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:28:18,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:28:18,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:28:18,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:28:18,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:28:18,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:28:18,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:28:18,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:28:18,775 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:28:18,775 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:28:18,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:28:18,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:28:18,777 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e184773994bf5ba427e3ad6843df80bcf1aa90cb50c2ace36ee6ac9939c1f916 [2021-11-06 19:28:18,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:28:18,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:28:18,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:28:18,963 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:28:18,964 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:28:18,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-06 19:28:19,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bf7f752/69461541a11343c18a4d35c77767d66d/FLAGb2957a313 [2021-11-06 19:28:19,598 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:28:19,598 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-06 19:28:19,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bf7f752/69461541a11343c18a4d35c77767d66d/FLAGb2957a313 [2021-11-06 19:28:20,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bf7f752/69461541a11343c18a4d35c77767d66d [2021-11-06 19:28:20,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:28:20,045 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:28:20,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:28:20,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:28:20,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:28:20,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:28:20" (1/1) ... [2021-11-06 19:28:20,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3435639f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:28:20, skipping insertion in model container [2021-11-06 19:28:20,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:28:20" (1/1) ... [2021-11-06 19:28:20,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:28:20,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:28:21,669 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[340444,340457] [2021-11-06 19:28:21,673 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[340589,340602] [2021-11-06 19:28:21,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:28:21,749 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:28:21,997 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[340444,340457] [2021-11-06 19:28:21,998 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[340589,340602] [2021-11-06 19:28:22,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:28:22,121 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:28:22,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:28:22 WrapperNode [2021-11-06 19:28:22,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:28:22,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:28:22,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:28:22,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:28:22,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:28:22" (1/1) ... [2021-11-06 19:28:22,199 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:28:22" (1/1) ... [2021-11-06 19:28:30,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:28:30,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:28:30,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:28:30,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:28:30,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:28:22" (1/1) ... [2021-11-06 19:28:30,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:28:22" (1/1) ... [2021-11-06 19:28:31,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:28:22" (1/1) ... [2021-11-06 19:28:31,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:28:22" (1/1) ... [2021-11-06 19:28:32,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:28:22" (1/1) ... [2021-11-06 19:28:33,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:28:22" (1/1) ... [2021-11-06 19:28:33,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:28:22" (1/1) ... [2021-11-06 19:28:34,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:28:34,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:28:34,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:28:34,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:28:34,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:28:22" (1/1) ... [2021-11-06 19:28:34,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:28:34,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:28:34,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 19:28:34,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 19:28:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-06 19:28:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:28:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 19:28:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 19:28:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:28:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:28:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:28:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:28:34,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:28:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 19:28:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 19:28:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:28:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:28:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:28:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:28:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:30:00,908 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_entry_EMGentry_14_returnLabel: main_#res := 0; [2021-11-06 19:30:00,911 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:30:00,912 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L9962: #t~ret1340 := main_#res; [2021-11-06 19:30:00,918 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_pci_pci_instance_2_switch_break: call ULTIMATE.dealloc(ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.base, ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.offset);havoc ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.base, ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.offset; [2021-11-06 19:30:00,998 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:30:00,998 INFO L299 CfgBuilder]: Removed 44878 assume(true) statements. [2021-11-06 19:30:01,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:30:01 BoogieIcfgContainer [2021-11-06 19:30:01,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:30:01,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:30:01,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:30:01,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:30:01,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:28:20" (1/3) ... [2021-11-06 19:30:01,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28462c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:30:01, skipping insertion in model container [2021-11-06 19:30:01,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:28:22" (2/3) ... [2021-11-06 19:30:01,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28462c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:30:01, skipping insertion in model container [2021-11-06 19:30:01,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:30:01" (3/3) ... [2021-11-06 19:30:01,025 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-06 19:30:01,028 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:30:01,028 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-06 19:30:01,113 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:30:01,117 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 19:30:01,117 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-06 19:30:01,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 28720 states, 28704 states have (on average 1.2088559085841695) internal successors, (34699), 28719 states have internal predecessors, (34699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:01,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-06 19:30:01,403 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:30:01,403 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:30:01,404 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 19:30:01,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:30:01,409 INFO L85 PathProgramCache]: Analyzing trace with hash -221297839, now seen corresponding path program 1 times [2021-11-06 19:30:01,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:30:01,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646027570] [2021-11-06 19:30:01,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:30:01,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:30:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:30:01,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:30:01,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:30:01,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646027570] [2021-11-06 19:30:01,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646027570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:30:01,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:30:01,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 19:30:01,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489293787] [2021-11-06 19:30:01,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 19:30:01,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:30:01,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 19:30:01,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 19:30:01,953 INFO L87 Difference]: Start difference. First operand has 28720 states, 28704 states have (on average 1.2088559085841695) internal successors, (34699), 28719 states have internal predecessors, (34699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:02,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:30:02,729 INFO L93 Difference]: Finished difference Result 57401 states and 69348 transitions. [2021-11-06 19:30:02,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 19:30:02,730 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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 52 [2021-11-06 19:30:02,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:30:02,821 INFO L225 Difference]: With dead ends: 57401 [2021-11-06 19:30:02,821 INFO L226 Difference]: Without dead ends: 24525 [2021-11-06 19:30:02,888 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 19:30:02,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24525 states. [2021-11-06 19:30:03,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24525 to 24525. [2021-11-06 19:30:03,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24525 states, 24509 states have (on average 1.203843486066343) internal successors, (29505), 24524 states have internal predecessors, (29505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:03,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24525 states to 24525 states and 29505 transitions. [2021-11-06 19:30:03,675 INFO L78 Accepts]: Start accepts. Automaton has 24525 states and 29505 transitions. Word has length 52 [2021-11-06 19:30:03,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:30:03,676 INFO L470 AbstractCegarLoop]: Abstraction has 24525 states and 29505 transitions. [2021-11-06 19:30:03,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:03,678 INFO L276 IsEmpty]: Start isEmpty. Operand 24525 states and 29505 transitions. [2021-11-06 19:30:03,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-06 19:30:03,681 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:30:03,681 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:30:03,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:30:03,681 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 19:30:03,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:30:03,684 INFO L85 PathProgramCache]: Analyzing trace with hash -2000935398, now seen corresponding path program 1 times [2021-11-06 19:30:03,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:30:03,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703108151] [2021-11-06 19:30:03,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:30:03,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:30:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:30:03,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:30:03,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:30:03,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703108151] [2021-11-06 19:30:03,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703108151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:30:03,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:30:03,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 19:30:03,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842405484] [2021-11-06 19:30:03,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:30:03,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:30:03,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:30:03,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:30:03,924 INFO L87 Difference]: Start difference. First operand 24525 states and 29505 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:04,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:30:04,620 INFO L93 Difference]: Finished difference Result 49019 states and 58976 transitions. [2021-11-06 19:30:04,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:30:04,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 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 53 [2021-11-06 19:30:04,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:30:04,674 INFO L225 Difference]: With dead ends: 49019 [2021-11-06 19:30:04,674 INFO L226 Difference]: Without dead ends: 24525 [2021-11-06 19:30:04,708 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:30:04,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24525 states. [2021-11-06 19:30:05,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24525 to 24525. [2021-11-06 19:30:05,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24525 states, 24509 states have (on average 1.2031906646538006) internal successors, (29489), 24524 states have internal predecessors, (29489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:05,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24525 states to 24525 states and 29489 transitions. [2021-11-06 19:30:05,298 INFO L78 Accepts]: Start accepts. Automaton has 24525 states and 29489 transitions. Word has length 53 [2021-11-06 19:30:05,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:30:05,298 INFO L470 AbstractCegarLoop]: Abstraction has 24525 states and 29489 transitions. [2021-11-06 19:30:05,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 24525 states and 29489 transitions. [2021-11-06 19:30:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-06 19:30:05,300 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:30:05,300 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:30:05,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:30:05,300 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 19:30:05,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:30:05,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1899368458, now seen corresponding path program 1 times [2021-11-06 19:30:05,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:30:05,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402920221] [2021-11-06 19:30:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:30:05,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:30:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:30:05,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:30:05,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:30:05,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402920221] [2021-11-06 19:30:05,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402920221] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:30:05,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:30:05,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:30:05,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616544309] [2021-11-06 19:30:05,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:30:05,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:30:05,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:30:05,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:30:05,522 INFO L87 Difference]: Start difference. First operand 24525 states and 29489 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:06,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:30:06,467 INFO L93 Difference]: Finished difference Result 49019 states and 58944 transitions. [2021-11-06 19:30:06,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:30:06,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2021-11-06 19:30:06,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:30:06,520 INFO L225 Difference]: With dead ends: 49019 [2021-11-06 19:30:06,521 INFO L226 Difference]: Without dead ends: 24525 [2021-11-06 19:30:06,578 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:30:06,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24525 states. [2021-11-06 19:30:07,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24525 to 24525. [2021-11-06 19:30:07,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24525 states, 24509 states have (on average 1.2025378432412583) internal successors, (29473), 24524 states have internal predecessors, (29473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:07,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24525 states to 24525 states and 29473 transitions. [2021-11-06 19:30:07,252 INFO L78 Accepts]: Start accepts. Automaton has 24525 states and 29473 transitions. Word has length 54 [2021-11-06 19:30:07,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:30:07,254 INFO L470 AbstractCegarLoop]: Abstraction has 24525 states and 29473 transitions. [2021-11-06 19:30:07,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:07,254 INFO L276 IsEmpty]: Start isEmpty. Operand 24525 states and 29473 transitions. [2021-11-06 19:30:07,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-06 19:30:07,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:30:07,255 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:30:07,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:30:07,256 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 19:30:07,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:30:07,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1249355637, now seen corresponding path program 1 times [2021-11-06 19:30:07,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:30:07,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451617971] [2021-11-06 19:30:07,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:30:07,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:30:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:30:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:30:07,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:30:07,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451617971] [2021-11-06 19:30:07,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451617971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:30:07,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:30:07,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:30:07,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255229803] [2021-11-06 19:30:07,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:30:07,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:30:07,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:30:07,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:30:07,562 INFO L87 Difference]: Start difference. First operand 24525 states and 29473 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:08,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:30:08,420 INFO L93 Difference]: Finished difference Result 49019 states and 58912 transitions. [2021-11-06 19:30:08,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:30:08,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2021-11-06 19:30:08,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:30:08,470 INFO L225 Difference]: With dead ends: 49019 [2021-11-06 19:30:08,470 INFO L226 Difference]: Without dead ends: 24525 [2021-11-06 19:30:08,511 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:30:08,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24525 states. [2021-11-06 19:30:09,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24525 to 24525. [2021-11-06 19:30:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24525 states, 24509 states have (on average 1.201885021828716) internal successors, (29457), 24524 states have internal predecessors, (29457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:09,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24525 states to 24525 states and 29457 transitions. [2021-11-06 19:30:09,250 INFO L78 Accepts]: Start accepts. Automaton has 24525 states and 29457 transitions. Word has length 55 [2021-11-06 19:30:09,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:30:09,252 INFO L470 AbstractCegarLoop]: Abstraction has 24525 states and 29457 transitions. [2021-11-06 19:30:09,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:09,252 INFO L276 IsEmpty]: Start isEmpty. Operand 24525 states and 29457 transitions. [2021-11-06 19:30:09,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-06 19:30:09,254 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:30:09,254 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:30:09,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:30:09,254 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 19:30:09,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:30:09,255 INFO L85 PathProgramCache]: Analyzing trace with hash 75703729, now seen corresponding path program 1 times [2021-11-06 19:30:09,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:30:09,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71404218] [2021-11-06 19:30:09,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:30:09,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:30:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:30:09,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:30:09,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:30:09,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71404218] [2021-11-06 19:30:09,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71404218] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:30:09,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:30:09,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:30:09,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492924651] [2021-11-06 19:30:09,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:30:09,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:30:09,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:30:09,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:30:09,435 INFO L87 Difference]: Start difference. First operand 24525 states and 29457 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:10,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:30:10,336 INFO L93 Difference]: Finished difference Result 49019 states and 58880 transitions. [2021-11-06 19:30:10,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:30:10,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2021-11-06 19:30:10,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:30:10,407 INFO L225 Difference]: With dead ends: 49019 [2021-11-06 19:30:10,408 INFO L226 Difference]: Without dead ends: 24525 [2021-11-06 19:30:10,446 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:30:10,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24525 states. [2021-11-06 19:30:11,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24525 to 24525. [2021-11-06 19:30:11,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24525 states, 24509 states have (on average 1.2012322004161737) internal successors, (29441), 24524 states have internal predecessors, (29441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:11,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24525 states to 24525 states and 29441 transitions. [2021-11-06 19:30:11,280 INFO L78 Accepts]: Start accepts. Automaton has 24525 states and 29441 transitions. Word has length 56 [2021-11-06 19:30:11,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:30:11,281 INFO L470 AbstractCegarLoop]: Abstraction has 24525 states and 29441 transitions. [2021-11-06 19:30:11,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:11,281 INFO L276 IsEmpty]: Start isEmpty. Operand 24525 states and 29441 transitions. [2021-11-06 19:30:11,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 19:30:11,282 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:30:11,282 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:30:11,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:30:11,283 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 19:30:11,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:30:11,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1947618096, now seen corresponding path program 1 times [2021-11-06 19:30:11,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:30:11,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151856316] [2021-11-06 19:30:11,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:30:11,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:30:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:30:11,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:30:11,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:30:11,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151856316] [2021-11-06 19:30:11,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151856316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:30:11,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:30:11,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:30:11,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015105195] [2021-11-06 19:30:11,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:30:11,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:30:11,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:30:11,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:30:11,467 INFO L87 Difference]: Start difference. First operand 24525 states and 29441 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:14,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:30:14,392 INFO L93 Difference]: Finished difference Result 68744 states and 82400 transitions. [2021-11-06 19:30:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:30:14,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-06 19:30:14,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:30:14,487 INFO L225 Difference]: With dead ends: 68744 [2021-11-06 19:30:14,487 INFO L226 Difference]: Without dead ends: 44250 [2021-11-06 19:30:14,538 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:30:14,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44250 states. [2021-11-06 19:30:15,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44250 to 32721. [2021-11-06 19:30:15,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32721 states, 32705 states have (on average 1.2) internal successors, (39246), 32720 states have internal predecessors, (39246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:15,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32721 states to 32721 states and 39246 transitions. [2021-11-06 19:30:15,947 INFO L78 Accepts]: Start accepts. Automaton has 32721 states and 39246 transitions. Word has length 57 [2021-11-06 19:30:15,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:30:15,947 INFO L470 AbstractCegarLoop]: Abstraction has 32721 states and 39246 transitions. [2021-11-06 19:30:15,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:15,947 INFO L276 IsEmpty]: Start isEmpty. Operand 32721 states and 39246 transitions. [2021-11-06 19:30:15,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-06 19:30:15,948 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:30:15,948 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:30:15,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 19:30:15,949 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 19:30:15,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:30:15,949 INFO L85 PathProgramCache]: Analyzing trace with hash -245936276, now seen corresponding path program 1 times [2021-11-06 19:30:15,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:30:15,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199380071] [2021-11-06 19:30:15,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:30:15,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:30:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:30:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:30:16,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:30:16,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199380071] [2021-11-06 19:30:16,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199380071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:30:16,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:30:16,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:30:16,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412211174] [2021-11-06 19:30:16,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:30:16,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:30:16,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:30:16,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:30:16,130 INFO L87 Difference]: Start difference. First operand 32721 states and 39246 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:17,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:30:17,720 INFO L93 Difference]: Finished difference Result 65411 states and 78458 transitions. [2021-11-06 19:30:17,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:30:17,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2021-11-06 19:30:17,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:30:17,780 INFO L225 Difference]: With dead ends: 65411 [2021-11-06 19:30:17,780 INFO L226 Difference]: Without dead ends: 32721 [2021-11-06 19:30:17,831 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:30:17,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32721 states. [2021-11-06 19:30:19,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32721 to 32721. [2021-11-06 19:30:19,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32721 states, 32705 states have (on average 1.1995107781684757) internal successors, (39230), 32720 states have internal predecessors, (39230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:19,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32721 states to 32721 states and 39230 transitions. [2021-11-06 19:30:19,308 INFO L78 Accepts]: Start accepts. Automaton has 32721 states and 39230 transitions. Word has length 58 [2021-11-06 19:30:19,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:30:19,308 INFO L470 AbstractCegarLoop]: Abstraction has 32721 states and 39230 transitions. [2021-11-06 19:30:19,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:19,309 INFO L276 IsEmpty]: Start isEmpty. Operand 32721 states and 39230 transitions. [2021-11-06 19:30:19,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-06 19:30:19,313 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:30:19,314 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:30:19,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 19:30:19,314 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 19:30:19,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:30:19,314 INFO L85 PathProgramCache]: Analyzing trace with hash 966741547, now seen corresponding path program 1 times [2021-11-06 19:30:19,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:30:19,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075390223] [2021-11-06 19:30:19,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:30:19,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:30:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:30:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:30:19,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:30:19,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075390223] [2021-11-06 19:30:19,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075390223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:30:19,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:30:19,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:30:19,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477581823] [2021-11-06 19:30:19,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:30:19,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:30:19,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:30:19,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:30:19,494 INFO L87 Difference]: Start difference. First operand 32721 states and 39230 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:21,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:30:21,204 INFO L93 Difference]: Finished difference Result 65411 states and 78426 transitions. [2021-11-06 19:30:21,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:30:21,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-11-06 19:30:21,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:30:21,256 INFO L225 Difference]: With dead ends: 65411 [2021-11-06 19:30:21,256 INFO L226 Difference]: Without dead ends: 32721 [2021-11-06 19:30:21,298 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:30:21,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32721 states. [2021-11-06 19:30:22,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32721 to 32721. [2021-11-06 19:30:22,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32721 states, 32705 states have (on average 1.1990215563369515) internal successors, (39214), 32720 states have internal predecessors, (39214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32721 states to 32721 states and 39214 transitions. [2021-11-06 19:30:22,864 INFO L78 Accepts]: Start accepts. Automaton has 32721 states and 39214 transitions. Word has length 59 [2021-11-06 19:30:22,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:30:22,864 INFO L470 AbstractCegarLoop]: Abstraction has 32721 states and 39214 transitions. [2021-11-06 19:30:22,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:30:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand 32721 states and 39214 transitions. [2021-11-06 19:30:22,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-06 19:30:22,865 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:30:22,865 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:30:22,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 19:30:22,866 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 19:30:22,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:30:22,866 INFO L85 PathProgramCache]: Analyzing trace with hash -94802649, now seen corresponding path program 1 times [2021-11-06 19:30:22,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:30:22,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657307881] [2021-11-06 19:30:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:30:22,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:30:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:30:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:30:23,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:30:23,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657307881] [2021-11-06 19:30:23,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657307881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:30:23,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:30:23,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:30:23,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232828542] [2021-11-06 19:30:23,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:30:23,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:30:23,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:30:23,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:30:23,047 INFO L87 Difference]: Start difference. First operand 32721 states and 39214 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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)