./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5eb3f0f7fbd0ab57546a0ac02256a38ed05a9424bb7a81ac298c225eddd7bc79 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 14:16:45,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:16:45,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:16:45,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:16:45,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:16:45,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:16:45,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:16:45,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:16:45,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:16:45,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:16:45,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:16:45,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:16:45,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:16:45,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:16:45,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:16:45,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:16:45,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:16:45,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:16:45,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:16:45,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:16:45,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:16:45,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:16:45,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:16:45,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:16:45,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:16:45,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:16:45,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:16:45,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:16:45,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:16:45,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:16:45,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:16:45,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:16:45,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:16:45,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:16:45,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:16:45,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:16:45,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:16:45,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:16:45,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:16:45,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:16:45,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:16:45,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:16:45,841 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:16:45,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:16:45,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:16:45,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:16:45,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:16:45,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:16:45,843 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:16:45,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:16:45,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:16:45,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:16:45,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:16:45,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:16:45,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:16:45,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:16:45,845 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:16:45,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:16:45,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:16:45,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:16:45,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:16:45,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:16:45,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:16:45,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:16:45,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:16:45,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:16:45,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:16:45,847 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:16:45,847 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:16:45,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:16:45,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:16:45,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eb3f0f7fbd0ab57546a0ac02256a38ed05a9424bb7a81ac298c225eddd7bc79 [2021-11-06 14:16:46,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:16:46,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:16:46,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:16:46,106 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:16:46,107 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:16:46,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2021-11-06 14:16:46,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c68b818ad/8545a29bc4004c4e92fc4eb184df1885/FLAGa21678f3a [2021-11-06 14:16:46,903 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:16:46,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2021-11-06 14:16:46,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c68b818ad/8545a29bc4004c4e92fc4eb184df1885/FLAGa21678f3a [2021-11-06 14:16:47,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c68b818ad/8545a29bc4004c4e92fc4eb184df1885 [2021-11-06 14:16:47,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:16:47,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:16:47,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:16:47,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:16:47,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:16:47,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:16:47" (1/1) ... [2021-11-06 14:16:47,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b32a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:16:47, skipping insertion in model container [2021-11-06 14:16:47,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:16:47" (1/1) ... [2021-11-06 14:16:47,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:16:47,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:16:47,933 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i[158290,158303] [2021-11-06 14:16:48,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:16:48,698 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:16:48,811 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i[158290,158303] [2021-11-06 14:16:48,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:16:49,089 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:16:49,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:16:49 WrapperNode [2021-11-06 14:16:49,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:16:49,091 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:16:49,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:16:49,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:16:49,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:16:49" (1/1) ... [2021-11-06 14:16:49,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:16:49" (1/1) ... [2021-11-06 14:16:49,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:16:49,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:16:49,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:16:49,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:16:49,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:16:49" (1/1) ... [2021-11-06 14:16:49,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:16:49" (1/1) ... [2021-11-06 14:16:50,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:16:49" (1/1) ... [2021-11-06 14:16:50,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:16:49" (1/1) ... [2021-11-06 14:16:51,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:16:49" (1/1) ... [2021-11-06 14:16:51,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:16:49" (1/1) ... [2021-11-06 14:16:51,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:16:49" (1/1) ... [2021-11-06 14:16:51,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:16:51,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:16:51,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:16:51,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:16:51,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:16:49" (1/1) ... [2021-11-06 14:16:51,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:16:51,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:16:51,504 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 14:16:51,687 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 14:16:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:16:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:16:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:16:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:16:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd_nopm [2021-11-06 14:16:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-06 14:16:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:16:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:16:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:16:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:16:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:16:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd [2021-11-06 14:16:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd_nopm [2021-11-06 14:16:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:16:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd [2021-11-06 14:16:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:16:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:16:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:16:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:16:51,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:17:57,448 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:17:57,449 INFO L299 CfgBuilder]: Removed 4671 assume(true) statements. [2021-11-06 14:17:57,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:17:57 BoogieIcfgContainer [2021-11-06 14:17:57,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:17:57,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:17:57,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:17:57,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:17:57,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:16:47" (1/3) ... [2021-11-06 14:17:57,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c9f296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:17:57, skipping insertion in model container [2021-11-06 14:17:57,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:16:49" (2/3) ... [2021-11-06 14:17:57,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c9f296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:17:57, skipping insertion in model container [2021-11-06 14:17:57,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:17:57" (3/3) ... [2021-11-06 14:17:57,462 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2021-11-06 14:17:57,466 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:17:57,466 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-06 14:17:57,525 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:17:57,529 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 14:17:57,529 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-06 14:17:57,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 7107 states, 7099 states have (on average 1.449359064656994) internal successors, (10289), 7106 states have internal predecessors, (10289), 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 14:17:57,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 14:17:57,656 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:17:57,657 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] [2021-11-06 14:17:57,658 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 14:17:57,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:17:57,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1203932107, now seen corresponding path program 1 times [2021-11-06 14:17:57,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:17:57,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193386800] [2021-11-06 14:17:57,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:57,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:17:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:17:58,496 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 14:17:58,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:17:58,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193386800] [2021-11-06 14:17:58,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193386800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:17:58,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:17:58,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:17:58,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798734685] [2021-11-06 14:17:58,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:17:58,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:17:58,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:17:58,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:17:58,535 INFO L87 Difference]: Start difference. First operand has 7107 states, 7099 states have (on average 1.449359064656994) internal successors, (10289), 7106 states have internal predecessors, (10289), 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 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 14:18:01,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:18:01,196 INFO L93 Difference]: Finished difference Result 21184 states and 30682 transitions. [2021-11-06 14:18:01,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:18:01,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2021-11-06 14:18:01,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:18:01,279 INFO L225 Difference]: With dead ends: 21184 [2021-11-06 14:18:01,280 INFO L226 Difference]: Without dead ends: 13410 [2021-11-06 14:18:01,534 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:18:01,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13410 states. [2021-11-06 14:18:01,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13410 to 13406. [2021-11-06 14:18:01,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13406 states, 13399 states have (on average 1.4173445779535787) internal successors, (18991), 13405 states have internal predecessors, (18991), 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 14:18:01,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13406 states to 13406 states and 18991 transitions. [2021-11-06 14:18:01,979 INFO L78 Accepts]: Start accepts. Automaton has 13406 states and 18991 transitions. Word has length 40 [2021-11-06 14:18:01,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:18:01,980 INFO L470 AbstractCegarLoop]: Abstraction has 13406 states and 18991 transitions. [2021-11-06 14:18:01,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 14:18:01,981 INFO L276 IsEmpty]: Start isEmpty. Operand 13406 states and 18991 transitions. [2021-11-06 14:18:01,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 14:18:01,988 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:18:01,988 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] [2021-11-06 14:18:01,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:18:01,992 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 14:18:01,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:18:01,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1832857005, now seen corresponding path program 1 times [2021-11-06 14:18:01,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:18:01,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461945498] [2021-11-06 14:18:01,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:18:01,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:18:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:18:02,306 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 14:18:02,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:18:02,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461945498] [2021-11-06 14:18:02,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461945498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:18:02,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:18:02,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:18:02,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478687441] [2021-11-06 14:18:02,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:18:02,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:18:02,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:18:02,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:18:02,309 INFO L87 Difference]: Start difference. First operand 13406 states and 18991 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:18:04,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:18:04,913 INFO L93 Difference]: Finished difference Result 32143 states and 45569 transitions. [2021-11-06 14:18:04,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:18:04,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-06 14:18:04,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:18:05,007 INFO L225 Difference]: With dead ends: 32143 [2021-11-06 14:18:05,007 INFO L226 Difference]: Without dead ends: 18796 [2021-11-06 14:18:05,034 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:18:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18796 states. [2021-11-06 14:18:05,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18796 to 18779. [2021-11-06 14:18:05,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18779 states, 18772 states have (on average 1.418708715107607) internal successors, (26632), 18778 states have internal predecessors, (26632), 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 14:18:05,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18779 states to 18779 states and 26632 transitions. [2021-11-06 14:18:05,459 INFO L78 Accepts]: Start accepts. Automaton has 18779 states and 26632 transitions. Word has length 45 [2021-11-06 14:18:05,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:18:05,459 INFO L470 AbstractCegarLoop]: Abstraction has 18779 states and 26632 transitions. [2021-11-06 14:18:05,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:18:05,460 INFO L276 IsEmpty]: Start isEmpty. Operand 18779 states and 26632 transitions. [2021-11-06 14:18:05,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-06 14:18:05,465 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:18:05,467 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] [2021-11-06 14:18:05,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:18:05,467 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 14:18:05,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:18:05,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1251917504, now seen corresponding path program 1 times [2021-11-06 14:18:05,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:18:05,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950337709] [2021-11-06 14:18:05,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:18:05,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:18:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:18:06,012 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 14:18:06,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:18:06,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950337709] [2021-11-06 14:18:06,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950337709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:18:06,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:18:06,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:18:06,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295199807] [2021-11-06 14:18:06,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:18:06,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:18:06,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:18:06,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:18:06,014 INFO L87 Difference]: Start difference. First operand 18779 states and 26632 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 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 14:18:06,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:18:06,236 INFO L93 Difference]: Finished difference Result 18779 states and 26632 transitions. [2021-11-06 14:18:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:18:06,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 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 47 [2021-11-06 14:18:06,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:18:06,287 INFO L225 Difference]: With dead ends: 18779 [2021-11-06 14:18:06,287 INFO L226 Difference]: Without dead ends: 18777 [2021-11-06 14:18:06,297 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 14:18:06,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18777 states. [2021-11-06 14:18:06,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18777 to 18777. [2021-11-06 14:18:06,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18777 states, 18771 states have (on average 1.4186777475893666) internal successors, (26630), 18776 states have internal predecessors, (26630), 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 14:18:06,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18777 states to 18777 states and 26630 transitions. [2021-11-06 14:18:06,687 INFO L78 Accepts]: Start accepts. Automaton has 18777 states and 26630 transitions. Word has length 47 [2021-11-06 14:18:06,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:18:06,688 INFO L470 AbstractCegarLoop]: Abstraction has 18777 states and 26630 transitions. [2021-11-06 14:18:06,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 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 14:18:06,688 INFO L276 IsEmpty]: Start isEmpty. Operand 18777 states and 26630 transitions. [2021-11-06 14:18:06,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-06 14:18:06,689 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:18:06,690 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] [2021-11-06 14:18:06,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:18:06,690 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 14:18:06,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:18:06,691 INFO L85 PathProgramCache]: Analyzing trace with hash 154759014, now seen corresponding path program 1 times [2021-11-06 14:18:06,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:18:06,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966934655] [2021-11-06 14:18:06,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:18:06,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:18:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:18:07,275 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 14:18:07,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:18:07,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966934655] [2021-11-06 14:18:07,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966934655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:18:07,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:18:07,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:18:07,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974306858] [2021-11-06 14:18:07,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:18:07,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:18:07,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:18:07,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:18:07,277 INFO L87 Difference]: Start difference. First operand 18777 states and 26630 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 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 14:18:07,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:18:07,545 INFO L93 Difference]: Finished difference Result 18777 states and 26630 transitions. [2021-11-06 14:18:07,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:18:07,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 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 48 [2021-11-06 14:18:07,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:18:07,594 INFO L225 Difference]: With dead ends: 18777 [2021-11-06 14:18:07,595 INFO L226 Difference]: Without dead ends: 18775 [2021-11-06 14:18:07,605 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 14:18:07,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18775 states. [2021-11-06 14:18:07,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18775 to 18775. [2021-11-06 14:18:08,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18775 states, 18770 states have (on average 1.4186467767714437) internal successors, (26628), 18774 states have internal predecessors, (26628), 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 14:18:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18775 states to 18775 states and 26628 transitions. [2021-11-06 14:18:08,056 INFO L78 Accepts]: Start accepts. Automaton has 18775 states and 26628 transitions. Word has length 48 [2021-11-06 14:18:08,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:18:08,057 INFO L470 AbstractCegarLoop]: Abstraction has 18775 states and 26628 transitions. [2021-11-06 14:18:08,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 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 14:18:08,057 INFO L276 IsEmpty]: Start isEmpty. Operand 18775 states and 26628 transitions. [2021-11-06 14:18:08,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-06 14:18:08,058 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:18:08,058 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] [2021-11-06 14:18:08,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:18:08,059 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 14:18:08,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:18:08,059 INFO L85 PathProgramCache]: Analyzing trace with hash 502584202, now seen corresponding path program 1 times [2021-11-06 14:18:08,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:18:08,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331301832] [2021-11-06 14:18:08,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:18:08,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:18:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:18:08,317 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 14:18:08,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:18:08,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331301832] [2021-11-06 14:18:08,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331301832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:18:08,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:18:08,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:18:08,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947465109] [2021-11-06 14:18:08,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:18:08,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:18:08,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:18:08,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:18:08,319 INFO L87 Difference]: Start difference. First operand 18775 states and 26628 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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 14:18:08,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:18:08,597 INFO L93 Difference]: Finished difference Result 18775 states and 26628 transitions. [2021-11-06 14:18:08,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:18:08,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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 49 [2021-11-06 14:18:08,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:18:08,648 INFO L225 Difference]: With dead ends: 18775 [2021-11-06 14:18:08,648 INFO L226 Difference]: Without dead ends: 18773 [2021-11-06 14:18:08,659 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 14:18:08,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18773 states. [2021-11-06 14:18:09,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18773 to 18773. [2021-11-06 14:18:09,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18773 states, 18769 states have (on average 1.4186158026533113) internal successors, (26626), 18772 states have internal predecessors, (26626), 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 14:18:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18773 states to 18773 states and 26626 transitions. [2021-11-06 14:18:09,116 INFO L78 Accepts]: Start accepts. Automaton has 18773 states and 26626 transitions. Word has length 49 [2021-11-06 14:18:09,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:18:09,116 INFO L470 AbstractCegarLoop]: Abstraction has 18773 states and 26626 transitions. [2021-11-06 14:18:09,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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 14:18:09,117 INFO L276 IsEmpty]: Start isEmpty. Operand 18773 states and 26626 transitions. [2021-11-06 14:18:09,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-06 14:18:09,119 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:18:09,119 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] [2021-11-06 14:18:09,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 14:18:09,120 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 14:18:09,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:18:09,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1599736848, now seen corresponding path program 1 times [2021-11-06 14:18:09,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:18:09,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634657749] [2021-11-06 14:18:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:18:09,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:18:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:18:09,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:18:09,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:18:09,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634657749] [2021-11-06 14:18:09,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634657749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:18:09,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:18:09,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:18:09,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756030636] [2021-11-06 14:18:09,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:18:09,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:18:09,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:18:09,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:18:09,378 INFO L87 Difference]: Start difference. First operand 18773 states and 26626 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 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 14:18:09,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:18:09,850 INFO L93 Difference]: Finished difference Result 37477 states and 53171 transitions. [2021-11-06 14:18:09,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:18:09,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 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 50 [2021-11-06 14:18:09,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:18:09,896 INFO L225 Difference]: With dead ends: 37477 [2021-11-06 14:18:09,897 INFO L226 Difference]: Without dead ends: 18763 [2021-11-06 14:18:09,926 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 14:18:09,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18763 states. [2021-11-06 14:18:10,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18763 to 18761. [2021-11-06 14:18:10,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18761 states, 18758 states have (on average 1.4185947329139568) internal successors, (26610), 18760 states have internal predecessors, (26610), 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 14:18:10,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18761 states to 18761 states and 26610 transitions. [2021-11-06 14:18:10,377 INFO L78 Accepts]: Start accepts. Automaton has 18761 states and 26610 transitions. Word has length 50 [2021-11-06 14:18:10,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:18:10,378 INFO L470 AbstractCegarLoop]: Abstraction has 18761 states and 26610 transitions. [2021-11-06 14:18:10,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 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 14:18:10,378 INFO L276 IsEmpty]: Start isEmpty. Operand 18761 states and 26610 transitions. [2021-11-06 14:18:10,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 14:18:10,380 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:18:10,380 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] [2021-11-06 14:18:10,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 14:18:10,380 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 14:18:10,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:18:10,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1947787348, now seen corresponding path program 1 times [2021-11-06 14:18:10,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:18:10,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020416685] [2021-11-06 14:18:10,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:18:10,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:18:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:18:10,608 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 14:18:10,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:18:10,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020416685] [2021-11-06 14:18:10,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020416685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:18:10,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:18:10,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:18:10,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354210130] [2021-11-06 14:18:10,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:18:10,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:18:10,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:18:10,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:18:10,611 INFO L87 Difference]: Start difference. First operand 18761 states and 26610 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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 14:18:10,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:18:10,920 INFO L93 Difference]: Finished difference Result 18761 states and 26610 transitions. [2021-11-06 14:18:10,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:18:10,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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 51 [2021-11-06 14:18:10,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:18:10,966 INFO L225 Difference]: With dead ends: 18761 [2021-11-06 14:18:10,966 INFO L226 Difference]: Without dead ends: 18752 [2021-11-06 14:18:10,976 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 14:18:10,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18752 states. [2021-11-06 14:18:11,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18752 to 18752. [2021-11-06 14:18:11,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18752 states, 18750 states have (on average 1.4185066666666666) internal successors, (26597), 18751 states have internal predecessors, (26597), 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 14:18:11,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18752 states to 18752 states and 26597 transitions. [2021-11-06 14:18:11,450 INFO L78 Accepts]: Start accepts. Automaton has 18752 states and 26597 transitions. Word has length 51 [2021-11-06 14:18:11,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:18:11,450 INFO L470 AbstractCegarLoop]: Abstraction has 18752 states and 26597 transitions. [2021-11-06 14:18:11,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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 14:18:11,451 INFO L276 IsEmpty]: Start isEmpty. Operand 18752 states and 26597 transitions. [2021-11-06 14:18:11,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 14:18:11,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:18:11,454 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:18:11,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 14:18:11,454 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 14:18:11,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:18:11,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1857410251, now seen corresponding path program 1 times [2021-11-06 14:18:11,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:18:11,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10892604] [2021-11-06 14:18:11,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:18:11,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:18:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:18:11,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:18:11,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:18:11,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10892604] [2021-11-06 14:18:11,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10892604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:18:11,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:18:11,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:18:11,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465299015] [2021-11-06 14:18:11,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:18:11,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:18:11,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:18:11,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:18:11,992 INFO L87 Difference]: Start difference. First operand 18752 states and 26597 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 14:18:12,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:18:12,519 INFO L93 Difference]: Finished difference Result 37452 states and 53133 transitions. [2021-11-06 14:18:12,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:18:12,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 79 [2021-11-06 14:18:12,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:18:12,562 INFO L225 Difference]: With dead ends: 37452 [2021-11-06 14:18:12,562 INFO L226 Difference]: Without dead ends: 18754 [2021-11-06 14:18:12,594 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:18:12,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18754 states. [2021-11-06 14:18:13,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18754 to 18754. [2021-11-06 14:18:13,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18754 states, 18752 states have (on average 1.4184620307167235) internal successors, (26599), 18753 states have internal predecessors, (26599), 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 14:18:13,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18754 states to 18754 states and 26599 transitions. [2021-11-06 14:18:13,062 INFO L78 Accepts]: Start accepts. Automaton has 18754 states and 26599 transitions. Word has length 79 [2021-11-06 14:18:13,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:18:13,062 INFO L470 AbstractCegarLoop]: Abstraction has 18754 states and 26599 transitions. [2021-11-06 14:18:13,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 14:18:13,063 INFO L276 IsEmpty]: Start isEmpty. Operand 18754 states and 26599 transitions. [2021-11-06 14:18:13,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 14:18:13,070 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:18:13,070 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:18:13,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 14:18:13,071 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 14:18:13,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:18:13,071 INFO L85 PathProgramCache]: Analyzing trace with hash -955951363, now seen corresponding path program 1 times [2021-11-06 14:18:13,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:18:13,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7510242] [2021-11-06 14:18:13,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:18:13,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:18:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:18:13,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 14:18:13,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:18:13,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7510242] [2021-11-06 14:18:13,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7510242] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:18:13,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619326326] [2021-11-06 14:18:13,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:18:13,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:18:13,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:18:13,671 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:18:13,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 14:21:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:21:12,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 3293 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-06 14:21:12,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:21:13,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 14:21:13,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619326326] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:21:13,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:21:13,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 14:21:13,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372919580] [2021-11-06 14:21:13,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:21:13,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:21:13,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:21:13,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:21:13,280 INFO L87 Difference]: Start difference. First operand 18754 states and 26599 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:14,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:21:14,098 INFO L93 Difference]: Finished difference Result 37464 states and 53154 transitions. [2021-11-06 14:21:14,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:21:14,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-06 14:21:14,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:21:14,144 INFO L225 Difference]: With dead ends: 37464 [2021-11-06 14:21:14,144 INFO L226 Difference]: Without dead ends: 18765 [2021-11-06 14:21:14,175 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:21:14,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18765 states. [2021-11-06 14:21:14,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18765 to 18765. [2021-11-06 14:21:14,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18765 states, 18763 states have (on average 1.4182167030858606) internal successors, (26610), 18764 states have internal predecessors, (26610), 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 14:21:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18765 states to 18765 states and 26610 transitions. [2021-11-06 14:21:14,661 INFO L78 Accepts]: Start accepts. Automaton has 18765 states and 26610 transitions. Word has length 81 [2021-11-06 14:21:14,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:21:14,661 INFO L470 AbstractCegarLoop]: Abstraction has 18765 states and 26610 transitions. [2021-11-06 14:21:14,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:14,662 INFO L276 IsEmpty]: Start isEmpty. Operand 18765 states and 26610 transitions. [2021-11-06 14:21:14,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 14:21:14,665 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:21:14,665 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:21:14,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 14:21:14,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:21:14,891 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 14:21:14,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:21:14,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1799619837, now seen corresponding path program 1 times [2021-11-06 14:21:14,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:21:14,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146348023] [2021-11-06 14:21:14,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:21:14,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:21:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:21:15,498 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 14:21:15,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:21:15,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146348023] [2021-11-06 14:21:15,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146348023] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:21:15,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290554498] [2021-11-06 14:21:15,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:21:15,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:21:15,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:21:15,501 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:21:15,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process Killed by 15