./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 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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-wip.dd.seqcomp-5b36d44 [2021-11-07 12:51:04,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 12:51:04,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 12:51:04,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 12:51:04,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 12:51:04,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 12:51:04,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 12:51:04,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 12:51:04,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 12:51:04,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 12:51:04,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 12:51:04,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 12:51:04,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 12:51:04,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 12:51:04,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 12:51:04,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 12:51:04,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 12:51:04,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 12:51:04,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 12:51:04,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 12:51:04,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 12:51:04,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 12:51:04,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 12:51:04,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 12:51:04,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 12:51:04,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 12:51:04,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 12:51:04,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 12:51:04,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 12:51:04,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 12:51:04,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 12:51:04,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 12:51:04,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 12:51:04,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 12:51:04,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 12:51:04,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 12:51:04,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 12:51:04,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 12:51:04,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 12:51:04,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 12:51:04,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 12:51:04,134 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 12:51:04,157 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 12:51:04,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 12:51:04,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 12:51:04,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 12:51:04,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 12:51:04,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 12:51:04,160 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 12:51:04,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 12:51:04,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 12:51:04,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 12:51:04,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 12:51:04,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 12:51:04,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 12:51:04,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 12:51:04,162 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 12:51:04,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 12:51:04,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 12:51:04,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 12:51:04,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 12:51:04,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:51:04,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 12:51:04,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 12:51:04,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 12:51:04,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 12:51:04,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 12:51:04,163 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 12:51:04,164 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 12:51:04,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 12:51:04,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 12:51:04,165 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eb3f0f7fbd0ab57546a0ac02256a38ed05a9424bb7a81ac298c225eddd7bc79 [2021-11-07 12:51:04,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 12:51:04,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 12:51:04,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 12:51:04,339 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 12:51:04,340 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 12:51:04,340 INFO L432 ainManager$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 [2021-11-07 12:51:04,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e25cca81/01814be46f7a4561a470f0b9a948c92b/FLAGc3dbfbb5c [2021-11-07 12:51:05,032 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 12:51:05,034 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 [2021-11-07 12:51:05,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e25cca81/01814be46f7a4561a470f0b9a948c92b/FLAGc3dbfbb5c [2021-11-07 12:51:05,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e25cca81/01814be46f7a4561a470f0b9a948c92b [2021-11-07 12:51:05,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 12:51:05,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 12:51:05,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 12:51:05,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 12:51:05,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 12:51:05,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:51:05" (1/1) ... [2021-11-07 12:51:05,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc19aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:05, skipping insertion in model container [2021-11-07 12:51:05,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:51:05" (1/1) ... [2021-11-07 12:51:05,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 12:51:05,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 12:51:06,072 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] [2021-11-07 12:51:06,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:51:06,740 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 12:51:06,806 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] [2021-11-07 12:51:06,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:51:07,108 INFO L208 MainTranslator]: Completed translation [2021-11-07 12:51:07,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:07 WrapperNode [2021-11-07 12:51:07,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 12:51:07,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 12:51:07,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 12:51:07,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 12:51:07,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:07" (1/1) ... [2021-11-07 12:51:07,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:07" (1/1) ... [2021-11-07 12:51:07,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 12:51:07,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 12:51:07,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 12:51:07,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 12:51:07,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:07" (1/1) ... [2021-11-07 12:51:07,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:07" (1/1) ... [2021-11-07 12:51:07,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:07" (1/1) ... [2021-11-07 12:51:07,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:07" (1/1) ... [2021-11-07 12:51:08,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:07" (1/1) ... [2021-11-07 12:51:08,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:07" (1/1) ... [2021-11-07 12:51:08,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:07" (1/1) ... [2021-11-07 12:51:08,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 12:51:08,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 12:51:08,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 12:51:08,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 12:51:08,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:07" (1/1) ... [2021-11-07 12:51:08,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:51:08,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:51:08,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 12:51:08,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 12:51:09,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 12:51:09,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 12:51:09,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 12:51:09,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 12:51:09,039 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd_nopm [2021-11-07 12:51:09,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-07 12:51:09,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 12:51:09,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 12:51:09,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 12:51:09,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 12:51:09,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 12:51:09,040 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd [2021-11-07 12:51:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd_nopm [2021-11-07 12:51:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 12:51:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd [2021-11-07 12:51:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 12:51:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 12:51:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 12:51:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 12:51:09,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 12:52:10,720 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 12:52:10,720 INFO L299 CfgBuilder]: Removed 4671 assume(true) statements. [2021-11-07 12:52:10,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:10 BoogieIcfgContainer [2021-11-07 12:52:10,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 12:52:10,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 12:52:10,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 12:52:10,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 12:52:10,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:51:05" (1/3) ... [2021-11-07 12:52:10,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e92c07c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:10, skipping insertion in model container [2021-11-07 12:52:10,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:07" (2/3) ... [2021-11-07 12:52:10,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e92c07c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:10, skipping insertion in model container [2021-11-07 12:52:10,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:10" (3/3) ... [2021-11-07 12:52:10,730 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2021-11-07 12:52:10,733 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 12:52:10,733 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-07 12:52:10,778 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 12:52:10,783 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 12:52:10,784 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-07 12:52:10,847 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) [2021-11-07 12:52:10,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 12:52:10,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:52:10,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:52:10,855 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)] === [2021-11-07 12:52:10,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:52:10,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1203932107, now seen corresponding path program 1 times [2021-11-07 12:52:10,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:52:10,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230617597] [2021-11-07 12:52:10,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:52:10,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:52:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:52:11,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:52:11,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:52:11,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230617597] [2021-11-07 12:52:11,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230617597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:52:11,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:52:11,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:52:11,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518270425] [2021-11-07 12:52:11,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:52:11,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:52:11,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:52:11,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:52:11,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:52:11,476 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) [2021-11-07 12:52:13,539 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:52:14,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:52:14,032 INFO L93 Difference]: Finished difference Result 21184 states and 30682 transitions. [2021-11-07 12:52:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:52:14,035 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 [2021-11-07 12:52:14,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:52:14,099 INFO L225 Difference]: With dead ends: 21184 [2021-11-07 12:52:14,099 INFO L226 Difference]: Without dead ends: 13410 [2021-11-07 12:52:14,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:52:14,120 INFO L933 BasicCegarLoop]: 10242 mSDtfsCounter, 10092 mSDsluCounter, 10223 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2096.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10092 SdHoareTripleChecker+Valid, 20465 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.67ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2223.53ms IncrementalHoareTripleChecker+Time [2021-11-07 12:52:14,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10092 Valid, 20465 Invalid, 15 Unknown, 0 Unchecked, 32.67ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2223.53ms Time] [2021-11-07 12:52:14,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13410 states. [2021-11-07 12:52:14,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13410 to 13406. [2021-11-07 12:52:14,444 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) [2021-11-07 12:52:14,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13406 states to 13406 states and 18991 transitions. [2021-11-07 12:52:14,477 INFO L78 Accepts]: Start accepts. Automaton has 13406 states and 18991 transitions. Word has length 40 [2021-11-07 12:52:14,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:52:14,478 INFO L470 AbstractCegarLoop]: Abstraction has 13406 states and 18991 transitions. [2021-11-07 12:52:14,479 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) [2021-11-07 12:52:14,480 INFO L276 IsEmpty]: Start isEmpty. Operand 13406 states and 18991 transitions. [2021-11-07 12:52:14,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 12:52:14,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:52:14,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:52:14,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 12:52:14,487 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)] === [2021-11-07 12:52:14,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:52:14,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1832857005, now seen corresponding path program 1 times [2021-11-07 12:52:14,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:52:14,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356408149] [2021-11-07 12:52:14,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:52:14,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:52:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:52:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:52:14,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:52:14,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356408149] [2021-11-07 12:52:14,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356408149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:52:14,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:52:14,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:52:14,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039286379] [2021-11-07 12:52:14,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:52:14,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:52:14,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:52:14,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:52:14,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:52:14,764 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) [2021-11-07 12:52:17,326 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:52:17,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:52:17,712 INFO L93 Difference]: Finished difference Result 32143 states and 45569 transitions. [2021-11-07 12:52:17,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:52:17,713 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 [2021-11-07 12:52:17,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:52:17,780 INFO L225 Difference]: With dead ends: 32143 [2021-11-07 12:52:17,780 INFO L226 Difference]: Without dead ends: 18796 [2021-11-07 12:52:17,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:52:17,802 INFO L933 BasicCegarLoop]: 9577 mSDtfsCounter, 3908 mSDsluCounter, 9456 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2633.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3908 SdHoareTripleChecker+Valid, 19033 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.43ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2691.39ms IncrementalHoareTripleChecker+Time [2021-11-07 12:52:17,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3908 Valid, 19033 Invalid, 47 Unknown, 0 Unchecked, 18.43ms Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 2691.39ms Time] [2021-11-07 12:52:17,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18796 states. [2021-11-07 12:52:18,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18796 to 18779. [2021-11-07 12:52:18,112 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) [2021-11-07 12:52:18,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18779 states to 18779 states and 26632 transitions. [2021-11-07 12:52:18,148 INFO L78 Accepts]: Start accepts. Automaton has 18779 states and 26632 transitions. Word has length 45 [2021-11-07 12:52:18,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:52:18,149 INFO L470 AbstractCegarLoop]: Abstraction has 18779 states and 26632 transitions. [2021-11-07 12:52:18,150 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) [2021-11-07 12:52:18,150 INFO L276 IsEmpty]: Start isEmpty. Operand 18779 states and 26632 transitions. [2021-11-07 12:52:18,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 12:52:18,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:52:18,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:52:18,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 12:52:18,157 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)] === [2021-11-07 12:52:18,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:52:18,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1251917504, now seen corresponding path program 1 times [2021-11-07 12:52:18,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:52:18,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253967281] [2021-11-07 12:52:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:52:18,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:52:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:52:18,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:52:18,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:52:18,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253967281] [2021-11-07 12:52:18,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253967281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:52:18,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:52:18,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:52:18,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737120528] [2021-11-07 12:52:18,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:52:18,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:52:18,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:52:18,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:52:18,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:52:18,873 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) [2021-11-07 12:52:19,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:52:19,196 INFO L93 Difference]: Finished difference Result 18779 states and 26632 transitions. [2021-11-07 12:52:19,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:52:19,212 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 [2021-11-07 12:52:19,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:52:19,239 INFO L225 Difference]: With dead ends: 18779 [2021-11-07 12:52:19,239 INFO L226 Difference]: Without dead ends: 18777 [2021-11-07 12:52:19,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:52:19,251 INFO L933 BasicCegarLoop]: 9570 mSDtfsCounter, 9526 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9526 SdHoareTripleChecker+Valid, 9570 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.29ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.58ms IncrementalHoareTripleChecker+Time [2021-11-07 12:52:19,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9526 Valid, 9570 Invalid, 1 Unknown, 0 Unchecked, 14.29ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 10.58ms Time] [2021-11-07 12:52:19,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18777 states. [2021-11-07 12:52:19,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18777 to 18777. [2021-11-07 12:52:19,502 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) [2021-11-07 12:52:19,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18777 states to 18777 states and 26630 transitions. [2021-11-07 12:52:19,530 INFO L78 Accepts]: Start accepts. Automaton has 18777 states and 26630 transitions. Word has length 47 [2021-11-07 12:52:19,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:52:19,530 INFO L470 AbstractCegarLoop]: Abstraction has 18777 states and 26630 transitions. [2021-11-07 12:52:19,531 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) [2021-11-07 12:52:19,531 INFO L276 IsEmpty]: Start isEmpty. Operand 18777 states and 26630 transitions. [2021-11-07 12:52:19,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 12:52:19,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:52:19,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:52:19,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 12:52:19,532 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)] === [2021-11-07 12:52:19,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:52:19,533 INFO L85 PathProgramCache]: Analyzing trace with hash 154759014, now seen corresponding path program 1 times [2021-11-07 12:52:19,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:52:19,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250902820] [2021-11-07 12:52:19,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:52:19,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:52:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:52:19,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:52:19,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:52:19,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250902820] [2021-11-07 12:52:19,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250902820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:52:19,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:52:19,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:52:19,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441668912] [2021-11-07 12:52:19,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:52:19,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:52:19,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:52:19,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:52:19,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:52:19,817 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) [2021-11-07 12:52:19,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:52:19,999 INFO L93 Difference]: Finished difference Result 18777 states and 26630 transitions. [2021-11-07 12:52:20,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:52:20,000 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 [2021-11-07 12:52:20,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:52:20,033 INFO L225 Difference]: With dead ends: 18777 [2021-11-07 12:52:20,034 INFO L226 Difference]: Without dead ends: 18775 [2021-11-07 12:52:20,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.69ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:52:20,043 INFO L933 BasicCegarLoop]: 9568 mSDtfsCounter, 9523 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9523 SdHoareTripleChecker+Valid, 9568 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.06ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.50ms IncrementalHoareTripleChecker+Time [2021-11-07 12:52:20,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9523 Valid, 9568 Invalid, 1 Unknown, 0 Unchecked, 12.06ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 5.50ms Time] [2021-11-07 12:52:20,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18775 states. [2021-11-07 12:52:20,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18775 to 18775. [2021-11-07 12:52:20,467 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) [2021-11-07 12:52:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18775 states to 18775 states and 26628 transitions. [2021-11-07 12:52:20,492 INFO L78 Accepts]: Start accepts. Automaton has 18775 states and 26628 transitions. Word has length 48 [2021-11-07 12:52:20,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:52:20,492 INFO L470 AbstractCegarLoop]: Abstraction has 18775 states and 26628 transitions. [2021-11-07 12:52:20,492 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) [2021-11-07 12:52:20,493 INFO L276 IsEmpty]: Start isEmpty. Operand 18775 states and 26628 transitions. [2021-11-07 12:52:20,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 12:52:20,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:52:20,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:52:20,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 12:52:20,494 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:52:20,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:52:20,494 INFO L85 PathProgramCache]: Analyzing trace with hash 502584202, now seen corresponding path program 1 times [2021-11-07 12:52:20,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:52:20,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764671630] [2021-11-07 12:52:20,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:52:20,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:52:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:52:20,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:52:20,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:52:20,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764671630] [2021-11-07 12:52:20,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764671630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:52:20,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:52:20,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:52:20,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628220228] [2021-11-07 12:52:20,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:52:20,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:52:20,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:52:20,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:52:20,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:52:20,696 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) [2021-11-07 12:52:21,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:52:21,021 INFO L93 Difference]: Finished difference Result 18775 states and 26628 transitions. [2021-11-07 12:52:21,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:52:21,021 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 [2021-11-07 12:52:21,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:52:21,053 INFO L225 Difference]: With dead ends: 18775 [2021-11-07 12:52:21,053 INFO L226 Difference]: Without dead ends: 18773 [2021-11-07 12:52:21,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.82ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:52:21,062 INFO L933 BasicCegarLoop]: 9566 mSDtfsCounter, 9520 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9520 SdHoareTripleChecker+Valid, 9566 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.83ms IncrementalHoareTripleChecker+Time [2021-11-07 12:52:21,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9520 Valid, 9566 Invalid, 1 Unknown, 0 Unchecked, 10.45ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 3.83ms Time] [2021-11-07 12:52:21,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18773 states. [2021-11-07 12:52:21,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18773 to 18773. [2021-11-07 12:52:21,335 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) [2021-11-07 12:52:21,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18773 states to 18773 states and 26626 transitions. [2021-11-07 12:52:21,362 INFO L78 Accepts]: Start accepts. Automaton has 18773 states and 26626 transitions. Word has length 49 [2021-11-07 12:52:21,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:52:21,363 INFO L470 AbstractCegarLoop]: Abstraction has 18773 states and 26626 transitions. [2021-11-07 12:52:21,364 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) [2021-11-07 12:52:21,364 INFO L276 IsEmpty]: Start isEmpty. Operand 18773 states and 26626 transitions. [2021-11-07 12:52:21,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 12:52:21,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:52:21,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:52:21,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 12:52:21,367 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)] === [2021-11-07 12:52:21,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:52:21,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1599736848, now seen corresponding path program 1 times [2021-11-07 12:52:21,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:52:21,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302001693] [2021-11-07 12:52:21,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:52:21,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:52:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:52:21,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:52:21,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:52:21,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302001693] [2021-11-07 12:52:21,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302001693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:52:21,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:52:21,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:52:21,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796140431] [2021-11-07 12:52:21,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:52:21,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:52:21,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:52:21,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:52:21,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:52:21,560 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) [2021-11-07 12:52:21,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:52:21,851 INFO L93 Difference]: Finished difference Result 37477 states and 53171 transitions. [2021-11-07 12:52:21,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:52:21,851 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 [2021-11-07 12:52:21,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:52:21,885 INFO L225 Difference]: With dead ends: 37477 [2021-11-07 12:52:21,885 INFO L226 Difference]: Without dead ends: 18763 [2021-11-07 12:52:21,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:52:21,913 INFO L933 BasicCegarLoop]: 9556 mSDtfsCounter, 9511 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9511 SdHoareTripleChecker+Valid, 9556 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.57ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.83ms IncrementalHoareTripleChecker+Time [2021-11-07 12:52:21,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9511 Valid, 9556 Invalid, 5 Unknown, 0 Unchecked, 11.57ms Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 13.83ms Time] [2021-11-07 12:52:21,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18763 states. [2021-11-07 12:52:22,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18763 to 18761. [2021-11-07 12:52:22,379 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) [2021-11-07 12:52:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18761 states to 18761 states and 26610 transitions. [2021-11-07 12:52:22,413 INFO L78 Accepts]: Start accepts. Automaton has 18761 states and 26610 transitions. Word has length 50 [2021-11-07 12:52:22,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:52:22,413 INFO L470 AbstractCegarLoop]: Abstraction has 18761 states and 26610 transitions. [2021-11-07 12:52:22,413 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) [2021-11-07 12:52:22,414 INFO L276 IsEmpty]: Start isEmpty. Operand 18761 states and 26610 transitions. [2021-11-07 12:52:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 12:52:22,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:52:22,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:52:22,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 12:52:22,415 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)] === [2021-11-07 12:52:22,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:52:22,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1947787348, now seen corresponding path program 1 times [2021-11-07 12:52:22,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:52:22,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791457705] [2021-11-07 12:52:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:52:22,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:52:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:52:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:52:22,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:52:22,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791457705] [2021-11-07 12:52:22,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791457705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:52:22,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:52:22,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:52:22,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761620412] [2021-11-07 12:52:22,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:52:22,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:52:22,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:52:22,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:52:22,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:52:22,592 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) [2021-11-07 12:52:22,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:52:22,803 INFO L93 Difference]: Finished difference Result 18761 states and 26610 transitions. [2021-11-07 12:52:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:52:22,804 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 [2021-11-07 12:52:22,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:52:22,835 INFO L225 Difference]: With dead ends: 18761 [2021-11-07 12:52:22,836 INFO L226 Difference]: Without dead ends: 18752 [2021-11-07 12:52:22,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:52:22,845 INFO L933 BasicCegarLoop]: 9557 mSDtfsCounter, 9508 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9508 SdHoareTripleChecker+Valid, 9557 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 12:52:22,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9508 Valid, 9557 Invalid, 0 Unknown, 0 Unchecked, 9.83ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 12:52:22,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18752 states. [2021-11-07 12:52:23,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18752 to 18752. [2021-11-07 12:52:23,292 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) [2021-11-07 12:52:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18752 states to 18752 states and 26597 transitions. [2021-11-07 12:52:23,323 INFO L78 Accepts]: Start accepts. Automaton has 18752 states and 26597 transitions. Word has length 51 [2021-11-07 12:52:23,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:52:23,324 INFO L470 AbstractCegarLoop]: Abstraction has 18752 states and 26597 transitions. [2021-11-07 12:52:23,324 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) [2021-11-07 12:52:23,324 INFO L276 IsEmpty]: Start isEmpty. Operand 18752 states and 26597 transitions. [2021-11-07 12:52:23,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 12:52:23,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:52:23,327 INFO L514 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] [2021-11-07 12:52:23,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 12:52:23,327 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)] === [2021-11-07 12:52:23,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:52:23,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1857410251, now seen corresponding path program 1 times [2021-11-07 12:52:23,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:52:23,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332495100] [2021-11-07 12:52:23,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:52:23,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:52:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:52:23,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 12:52:23,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:52:23,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332495100] [2021-11-07 12:52:23,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332495100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:52:23,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:52:23,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:52:23,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341519312] [2021-11-07 12:52:23,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:52:23,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:52:23,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:52:23,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:52:23,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:52:23,758 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) [2021-11-07 12:52:24,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:52:24,209 INFO L93 Difference]: Finished difference Result 37452 states and 53133 transitions. [2021-11-07 12:52:24,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:52:24,210 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 [2021-11-07 12:52:24,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:52:24,246 INFO L225 Difference]: With dead ends: 37452 [2021-11-07 12:52:24,247 INFO L226 Difference]: Without dead ends: 18754 [2021-11-07 12:52:24,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:52:24,277 INFO L933 BasicCegarLoop]: 9547 mSDtfsCounter, 0 mSDsluCounter, 9531 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19078 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.35ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.44ms IncrementalHoareTripleChecker+Time [2021-11-07 12:52:24,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19078 Invalid, 20 Unknown, 0 Unchecked, 13.35ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 123.44ms Time] [2021-11-07 12:52:24,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18754 states. [2021-11-07 12:52:24,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18754 to 18754. [2021-11-07 12:52:24,665 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) [2021-11-07 12:52:24,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18754 states to 18754 states and 26599 transitions. [2021-11-07 12:52:24,698 INFO L78 Accepts]: Start accepts. Automaton has 18754 states and 26599 transitions. Word has length 79 [2021-11-07 12:52:24,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:52:24,698 INFO L470 AbstractCegarLoop]: Abstraction has 18754 states and 26599 transitions. [2021-11-07 12:52:24,698 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) [2021-11-07 12:52:24,698 INFO L276 IsEmpty]: Start isEmpty. Operand 18754 states and 26599 transitions. [2021-11-07 12:52:24,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 12:52:24,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:52:24,701 INFO L514 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] [2021-11-07 12:52:24,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 12:52:24,701 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)] === [2021-11-07 12:52:24,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:52:24,702 INFO L85 PathProgramCache]: Analyzing trace with hash -955951363, now seen corresponding path program 1 times [2021-11-07 12:52:24,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:52:24,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533863675] [2021-11-07 12:52:24,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:52:24,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:52:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:52:25,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 12:52:25,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:52:25,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533863675] [2021-11-07 12:52:25,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533863675] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:52:25,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282279339] [2021-11-07 12:52:25,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:52:25,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:52:25,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:52:25,236 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) [2021-11-07 12:52:25,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 12:55:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:55:28,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 3293 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 12:55:28,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:55:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 12:55:28,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 12:55:29,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:55:29,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282279339] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 12:55:29,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-07 12:55:29,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2021-11-07 12:55:29,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563390551] [2021-11-07 12:55:29,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:55:29,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:55:29,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:55:29,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:55:29,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:55:29,032 INFO L87 Difference]: Start difference. First operand 18754 states and 26599 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:55:29,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:55:29,458 INFO L93 Difference]: Finished difference Result 37464 states and 53155 transitions. [2021-11-07 12:55:29,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:55:29,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 [2021-11-07 12:55:29,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:55:29,488 INFO L225 Difference]: With dead ends: 37464 [2021-11-07 12:55:29,488 INFO L226 Difference]: Without dead ends: 18767 [2021-11-07 12:55:29,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 147.83ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:55:29,515 INFO L933 BasicCegarLoop]: 9543 mSDtfsCounter, 0 mSDsluCounter, 9531 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19074 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.14ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.57ms IncrementalHoareTripleChecker+Time [2021-11-07 12:55:29,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19074 Invalid, 26 Unknown, 0 Unchecked, 17.14ms Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 93.57ms Time] [2021-11-07 12:55:29,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18767 states. [2021-11-07 12:55:29,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18767 to 18767. [2021-11-07 12:55:29,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18767 states, 18765 states have (on average 1.4181721289634959) internal successors, (26612), 18766 states have internal predecessors, (26612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:55:29,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18767 states to 18767 states and 26612 transitions. [2021-11-07 12:55:29,870 INFO L78 Accepts]: Start accepts. Automaton has 18767 states and 26612 transitions. Word has length 81 [2021-11-07 12:55:29,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:55:29,870 INFO L470 AbstractCegarLoop]: Abstraction has 18767 states and 26612 transitions. [2021-11-07 12:55:29,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:55:29,870 INFO L276 IsEmpty]: Start isEmpty. Operand 18767 states and 26612 transitions. [2021-11-07 12:55:29,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 12:55:29,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:55:29,876 INFO L514 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, 1] [2021-11-07 12:55:29,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 12:55:30,090 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 [2021-11-07 12:55:30,090 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)] === [2021-11-07 12:55:30,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:55:30,090 INFO L85 PathProgramCache]: Analyzing trace with hash 274333123, now seen corresponding path program 1 times [2021-11-07 12:55:30,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:55:30,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550919272] [2021-11-07 12:55:30,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:55:30,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:55:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:55:30,465 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:55:30,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:55:30,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550919272] [2021-11-07 12:55:30,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550919272] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:55:30,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92087737] [2021-11-07 12:55:30,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:55:30,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:55:30,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:55:30,467 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) [2021-11-07 12:55:30,470 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