./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.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 6932181a2a9c8d4d7c700844e1db6a95829edf2ea099e17754a10b04a114b5cd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-23 01:55:54,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:55:54,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:55:54,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:55:54,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:55:54,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:55:54,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:55:54,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:55:54,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:55:54,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:55:54,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:55:54,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:55:54,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:55:54,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:55:54,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:55:54,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:55:54,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:55:54,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:55:54,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:55:54,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:55:54,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:55:54,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:55:54,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:55:54,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:55:54,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:55:54,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:55:54,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:55:54,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:55:54,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:55:54,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:55:54,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:55:54,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:55:54,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:55:54,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:55:54,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:55:54,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:55:54,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:55:54,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:55:54,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:55:54,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:55:54,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:55:54,080 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 01:55:54,102 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:55:54,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:55:54,103 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:55:54,103 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:55:54,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:55:54,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:55:54,104 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 01:55:54,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:55:54,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:55:54,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:55:54,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:55:54,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:55:54,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:55:54,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:55:54,115 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:55:54,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:55:54,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:55:54,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 01:55:54,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:55:54,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:55:54,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:55:54,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:55:54,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:55:54,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 01:55:54,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:55:54,117 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 01:55:54,117 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 01:55:54,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:55:54,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:55:54,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6932181a2a9c8d4d7c700844e1db6a95829edf2ea099e17754a10b04a114b5cd [2021-11-23 01:55:54,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:55:54,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:55:54,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:55:54,366 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:55:54,368 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:55:54,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i [2021-11-23 01:55:54,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e075af699/0766013cc6e14f5b82d7265c9803e39e/FLAGaa3b8aa35 [2021-11-23 01:55:55,026 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:55:55,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i [2021-11-23 01:55:55,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e075af699/0766013cc6e14f5b82d7265c9803e39e/FLAGaa3b8aa35 [2021-11-23 01:55:55,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e075af699/0766013cc6e14f5b82d7265c9803e39e [2021-11-23 01:55:55,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:55:55,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:55:55,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:55:55,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:55:55,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:55:55,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:55" (1/1) ... [2021-11-23 01:55:55,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64dc8455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:55, skipping insertion in model container [2021-11-23 01:55:55,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:55" (1/1) ... [2021-11-23 01:55:55,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:55:55,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:55:56,635 WARN L230 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i[213066,213079] [2021-11-23 01:55:56,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:55:56,714 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:55:57,032 WARN L230 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i[213066,213079] [2021-11-23 01:55:57,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:55:57,130 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:55:57,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:57 WrapperNode [2021-11-23 01:55:57,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:55:57,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:55:57,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:55:57,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:55:57,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:57" (1/1) ... [2021-11-23 01:55:57,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:57" (1/1) ... [2021-11-23 01:55:58,168 INFO L137 Inliner]: procedures = 222, calls = 2591, calls flagged for inlining = 448, calls inlined = 3434, statements flattened = 44086 [2021-11-23 01:55:58,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:55:58,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:55:58,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:55:58,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:55:58,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:57" (1/1) ... [2021-11-23 01:55:58,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:57" (1/1) ... [2021-11-23 01:55:58,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:57" (1/1) ... [2021-11-23 01:55:58,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:57" (1/1) ... [2021-11-23 01:55:59,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:57" (1/1) ... [2021-11-23 01:55:59,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:57" (1/1) ... [2021-11-23 01:55:59,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:57" (1/1) ... [2021-11-23 01:55:59,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:55:59,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:55:59,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:55:59,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:55:59,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:57" (1/1) ... [2021-11-23 01:55:59,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:55:59,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 01:55:59,901 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) [2021-11-23 01:55:59,968 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 [2021-11-23 01:56:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure gr_finish_request [2021-11-23 01:56:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_finish_request [2021-11-23 01:56:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 01:56:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 01:56:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 01:56:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure gr_dequeue [2021-11-23 01:56:00,041 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_dequeue [2021-11-23 01:56:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 01:56:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure gr_ep0_setup [2021-11-23 01:56:00,041 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_ep0_setup [2021-11-23 01:56:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:56:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 01:56:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 01:56:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 01:56:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:56:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:56:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:56:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:56:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 01:56:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure gr_dma_advance [2021-11-23 01:56:00,042 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_dma_advance [2021-11-23 01:56:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 01:56:00,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 01:56:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:56:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:56:00,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:56:00,856 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:56:00,857 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:56:15,234 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:56:15,270 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:56:15,270 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 01:56:15,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:56:15 BoogieIcfgContainer [2021-11-23 01:56:15,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:56:15,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:56:15,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:56:15,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:56:15,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:55:55" (1/3) ... [2021-11-23 01:56:15,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796cce52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:56:15, skipping insertion in model container [2021-11-23 01:56:15,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:57" (2/3) ... [2021-11-23 01:56:15,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796cce52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:56:15, skipping insertion in model container [2021-11-23 01:56:15,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:56:15" (3/3) ... [2021-11-23 01:56:15,289 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i [2021-11-23 01:56:15,293 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:56:15,293 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2021-11-23 01:56:15,355 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:56:15,360 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 [2021-11-23 01:56:15,361 INFO L340 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2021-11-23 01:56:15,462 INFO L276 IsEmpty]: Start isEmpty. Operand has 7571 states, 7431 states have (on average 1.37801103485399) internal successors, (10240), 7553 states have internal predecessors, (10240), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-23 01:56:15,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 01:56:15,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:56:15,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:56:15,474 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-23 01:56:15,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:56:15,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1028106419, now seen corresponding path program 1 times [2021-11-23 01:56:15,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:56:15,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393221888] [2021-11-23 01:56:15,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:56:15,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:56:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:56:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:56:16,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:56:16,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393221888] [2021-11-23 01:56:16,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393221888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:56:16,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:56:16,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:56:16,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009139266] [2021-11-23 01:56:16,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:56:16,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 01:56:16,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:56:16,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 01:56:16,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:56:16,061 INFO L87 Difference]: Start difference. First operand has 7571 states, 7431 states have (on average 1.37801103485399) internal successors, (10240), 7553 states have internal predecessors, (10240), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:56:16,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:56:16,329 INFO L93 Difference]: Finished difference Result 15054 states and 20641 transitions. [2021-11-23 01:56:16,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 01:56:16,332 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-23 01:56:16,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:56:16,375 INFO L225 Difference]: With dead ends: 15054 [2021-11-23 01:56:16,375 INFO L226 Difference]: Without dead ends: 7431 [2021-11-23 01:56:16,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:56:16,412 INFO L933 BasicCegarLoop]: 9938 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9938 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:56:16,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9938 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:56:16,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7431 states. [2021-11-23 01:56:16,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7431 to 7431. [2021-11-23 01:56:16,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7431 states, 7292 states have (on average 1.3347504114097641) internal successors, (9733), 7413 states have internal predecessors, (9733), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-23 01:56:16,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7431 states to 7431 states and 9833 transitions. [2021-11-23 01:56:16,674 INFO L78 Accepts]: Start accepts. Automaton has 7431 states and 9833 transitions. Word has length 55 [2021-11-23 01:56:16,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:56:16,675 INFO L470 AbstractCegarLoop]: Abstraction has 7431 states and 9833 transitions. [2021-11-23 01:56:16,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:56:16,675 INFO L276 IsEmpty]: Start isEmpty. Operand 7431 states and 9833 transitions. [2021-11-23 01:56:16,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 01:56:16,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:56:16,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:56:16,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:56:16,684 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-23 01:56:16,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:56:16,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1084413355, now seen corresponding path program 1 times [2021-11-23 01:56:16,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:56:16,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333799649] [2021-11-23 01:56:16,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:56:16,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:56:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:56:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:56:17,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:56:17,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333799649] [2021-11-23 01:56:17,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333799649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:56:17,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:56:17,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:56:17,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015319907] [2021-11-23 01:56:17,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:56:17,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:56:17,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:56:17,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:56:17,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:56:17,034 INFO L87 Difference]: Start difference. First operand 7431 states and 9833 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:56:17,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:56:17,541 INFO L93 Difference]: Finished difference Result 21771 states and 28809 transitions. [2021-11-23 01:56:17,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:56:17,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-23 01:56:17,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:56:17,607 INFO L225 Difference]: With dead ends: 21771 [2021-11-23 01:56:17,608 INFO L226 Difference]: Without dead ends: 14380 [2021-11-23 01:56:17,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:56:17,635 INFO L933 BasicCegarLoop]: 9918 mSDtfsCounter, 9225 mSDsluCounter, 9753 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9225 SdHoareTripleChecker+Valid, 19671 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:56:17,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9225 Valid, 19671 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:56:17,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14380 states. [2021-11-23 01:56:17,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14380 to 14220. [2021-11-23 01:56:17,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14220 states, 14028 states have (on average 1.3363273453093811) internal successors, (18746), 14186 states have internal predecessors, (18746), 98 states have call successors, (98), 10 states have call predecessors, (98), 10 states have return successors, (98), 94 states have call predecessors, (98), 98 states have call successors, (98) [2021-11-23 01:56:18,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14220 states to 14220 states and 18942 transitions. [2021-11-23 01:56:18,049 INFO L78 Accepts]: Start accepts. Automaton has 14220 states and 18942 transitions. Word has length 55 [2021-11-23 01:56:18,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:56:18,050 INFO L470 AbstractCegarLoop]: Abstraction has 14220 states and 18942 transitions. [2021-11-23 01:56:18,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:56:18,051 INFO L276 IsEmpty]: Start isEmpty. Operand 14220 states and 18942 transitions. [2021-11-23 01:56:18,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 01:56:18,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:56:18,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:56:18,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 01:56:18,063 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-23 01:56:18,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:56:18,064 INFO L85 PathProgramCache]: Analyzing trace with hash -2050212412, now seen corresponding path program 1 times [2021-11-23 01:56:18,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:56:18,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410221347] [2021-11-23 01:56:18,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:56:18,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:56:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:56:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:56:18,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:56:18,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410221347] [2021-11-23 01:56:18,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410221347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:56:18,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:56:18,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:56:18,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013330694] [2021-11-23 01:56:18,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:56:18,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:56:18,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:56:18,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:56:18,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:56:18,545 INFO L87 Difference]: Start difference. First operand 14220 states and 18942 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 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) [2021-11-23 01:56:19,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:56:19,398 INFO L93 Difference]: Finished difference Result 47466 states and 63157 transitions. [2021-11-23 01:56:19,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:56:19,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2021-11-23 01:56:19,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:56:19,521 INFO L225 Difference]: With dead ends: 47466 [2021-11-23 01:56:19,522 INFO L226 Difference]: Without dead ends: 33286 [2021-11-23 01:56:19,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:56:19,573 INFO L933 BasicCegarLoop]: 14117 mSDtfsCounter, 13254 mSDsluCounter, 19694 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13277 SdHoareTripleChecker+Valid, 33811 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:56:19,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13277 Valid, 33811 Invalid, 89 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:56:19,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33286 states. [2021-11-23 01:56:20,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33286 to 25610. [2021-11-23 01:56:20,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25610 states, 25320 states have (on average 1.338823064770932) internal successors, (33899), 25545 states have internal predecessors, (33899), 186 states have call successors, (186), 20 states have call predecessors, (186), 20 states have return successors, (186), 178 states have call predecessors, (186), 186 states have call successors, (186) [2021-11-23 01:56:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25610 states to 25610 states and 34271 transitions. [2021-11-23 01:56:20,634 INFO L78 Accepts]: Start accepts. Automaton has 25610 states and 34271 transitions. Word has length 93 [2021-11-23 01:56:20,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:56:20,634 INFO L470 AbstractCegarLoop]: Abstraction has 25610 states and 34271 transitions. [2021-11-23 01:56:20,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 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) [2021-11-23 01:56:20,635 INFO L276 IsEmpty]: Start isEmpty. Operand 25610 states and 34271 transitions. [2021-11-23 01:56:20,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-23 01:56:20,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:56:20,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:56:20,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 01:56:20,647 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-23 01:56:20,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:56:20,648 INFO L85 PathProgramCache]: Analyzing trace with hash 283901797, now seen corresponding path program 1 times [2021-11-23 01:56:20,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:56:20,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064031099] [2021-11-23 01:56:20,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:56:20,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:56:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:56:21,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:56:21,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:56:21,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064031099] [2021-11-23 01:56:21,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064031099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:56:21,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:56:21,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:56:21,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054120178] [2021-11-23 01:56:21,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:56:21,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:56:21,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:56:21,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:56:21,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:56:21,066 INFO L87 Difference]: Start difference. First operand 25610 states and 34271 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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) [2021-11-23 01:56:22,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:56:22,361 INFO L93 Difference]: Finished difference Result 68576 states and 91521 transitions. [2021-11-23 01:56:22,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:56:22,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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 94 [2021-11-23 01:56:22,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:56:22,516 INFO L225 Difference]: With dead ends: 68576 [2021-11-23 01:56:22,517 INFO L226 Difference]: Without dead ends: 50070 [2021-11-23 01:56:22,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:56:22,566 INFO L933 BasicCegarLoop]: 14108 mSDtfsCounter, 17481 mSDsluCounter, 19674 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17504 SdHoareTripleChecker+Valid, 33782 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:56:22,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17504 Valid, 33782 Invalid, 136 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:56:22,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50070 states. [2021-11-23 01:56:23,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50070 to 37944. [2021-11-23 01:56:23,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37944 states, 37566 states have (on average 1.3387637757546718) internal successors, (50292), 37850 states have internal predecessors, (50292), 264 states have call successors, (264), 30 states have call predecessors, (264), 30 states have return successors, (264), 252 states have call predecessors, (264), 264 states have call successors, (264) [2021-11-23 01:56:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37944 states to 37944 states and 50820 transitions. [2021-11-23 01:56:23,719 INFO L78 Accepts]: Start accepts. Automaton has 37944 states and 50820 transitions. Word has length 94 [2021-11-23 01:56:23,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:56:23,720 INFO L470 AbstractCegarLoop]: Abstraction has 37944 states and 50820 transitions. [2021-11-23 01:56:23,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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) [2021-11-23 01:56:23,720 INFO L276 IsEmpty]: Start isEmpty. Operand 37944 states and 50820 transitions. [2021-11-23 01:56:23,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-23 01:56:23,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:56:23,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:56:23,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 01:56:23,733 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-23 01:56:23,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:56:23,733 INFO L85 PathProgramCache]: Analyzing trace with hash -638164744, now seen corresponding path program 1 times [2021-11-23 01:56:23,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:56:23,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895323853] [2021-11-23 01:56:23,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:56:23,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:56:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:56:23,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:56:23,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:56:23,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895323853] [2021-11-23 01:56:23,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895323853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:56:23,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:56:23,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:56:23,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37978942] [2021-11-23 01:56:23,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:56:23,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:56:23,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:56:23,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:56:23,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:56:23,960 INFO L87 Difference]: Start difference. First operand 37944 states and 50820 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-23 01:56:25,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:56:25,451 INFO L93 Difference]: Finished difference Result 98670 states and 131824 transitions. [2021-11-23 01:56:25,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:56:25,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 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 95 [2021-11-23 01:56:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:56:25,637 INFO L225 Difference]: With dead ends: 98670 [2021-11-23 01:56:25,638 INFO L226 Difference]: Without dead ends: 67246 [2021-11-23 01:56:25,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:56:25,720 INFO L933 BasicCegarLoop]: 14109 mSDtfsCounter, 17495 mSDsluCounter, 23831 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17518 SdHoareTripleChecker+Valid, 37940 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:56:25,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17518 Valid, 37940 Invalid, 137 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:56:25,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67246 states. [2021-11-23 01:56:27,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67246 to 49202. [2021-11-23 01:56:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49202 states, 48746 states have (on average 1.3390432035449062) internal successors, (65273), 49081 states have internal predecessors, (65273), 332 states have call successors, (332), 40 states have call predecessors, (332), 40 states have return successors, (332), 316 states have call predecessors, (332), 332 states have call successors, (332) [2021-11-23 01:56:27,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49202 states to 49202 states and 65937 transitions. [2021-11-23 01:56:27,476 INFO L78 Accepts]: Start accepts. Automaton has 49202 states and 65937 transitions. Word has length 95 [2021-11-23 01:56:27,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:56:27,477 INFO L470 AbstractCegarLoop]: Abstraction has 49202 states and 65937 transitions. [2021-11-23 01:56:27,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-23 01:56:27,477 INFO L276 IsEmpty]: Start isEmpty. Operand 49202 states and 65937 transitions. [2021-11-23 01:56:27,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-23 01:56:27,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:56:27,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:56:27,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 01:56:27,493 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-23 01:56:27,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:56:27,493 INFO L85 PathProgramCache]: Analyzing trace with hash 923039076, now seen corresponding path program 1 times [2021-11-23 01:56:27,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:56:27,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601844465] [2021-11-23 01:56:27,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:56:27,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:56:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:56:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:56:27,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:56:27,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601844465] [2021-11-23 01:56:27,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601844465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:56:27,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:56:27,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:56:27,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642913128] [2021-11-23 01:56:27,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:56:27,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:56:27,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:56:27,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:56:27,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:56:27,710 INFO L87 Difference]: Start difference. First operand 49202 states and 65937 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-23 01:56:29,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:56:29,513 INFO L93 Difference]: Finished difference Result 159968 states and 214075 transitions. [2021-11-23 01:56:29,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:56:29,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2021-11-23 01:56:29,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:56:29,825 INFO L225 Difference]: With dead ends: 159968 [2021-11-23 01:56:29,826 INFO L226 Difference]: Without dead ends: 110806 [2021-11-23 01:56:29,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:56:29,939 INFO L933 BasicCegarLoop]: 14127 mSDtfsCounter, 13278 mSDsluCounter, 19655 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13301 SdHoareTripleChecker+Valid, 33782 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:56:29,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13301 Valid, 33782 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:56:30,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110806 states. [2021-11-23 01:56:31,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110806 to 87804. [2021-11-23 01:56:31,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87804 states, 87016 states have (on average 1.3418107014801877) internal successors, (116759), 87571 states have internal predecessors, (116759), 624 states have call successors, (624), 80 states have call predecessors, (624), 80 states have return successors, (624), 592 states have call predecessors, (624), 624 states have call successors, (624) [2021-11-23 01:56:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87804 states to 87804 states and 118007 transitions. [2021-11-23 01:56:32,227 INFO L78 Accepts]: Start accepts. Automaton has 87804 states and 118007 transitions. Word has length 96 [2021-11-23 01:56:32,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:56:32,227 INFO L470 AbstractCegarLoop]: Abstraction has 87804 states and 118007 transitions. [2021-11-23 01:56:32,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-23 01:56:32,228 INFO L276 IsEmpty]: Start isEmpty. Operand 87804 states and 118007 transitions. [2021-11-23 01:56:32,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-23 01:56:32,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:56:32,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:56:32,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 01:56:32,244 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-23 01:56:32,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:56:32,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1586748695, now seen corresponding path program 1 times [2021-11-23 01:56:32,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:56:32,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330307765] [2021-11-23 01:56:32,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:56:32,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:56:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:56:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:56:32,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:56:32,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330307765] [2021-11-23 01:56:32,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330307765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:56:32,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:56:32,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:56:32,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327454990] [2021-11-23 01:56:32,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:56:32,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:56:32,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:56:32,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:56:32,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:56:32,453 INFO L87 Difference]: Start difference. First operand 87804 states and 118007 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-23 01:56:35,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:56:35,871 INFO L93 Difference]: Finished difference Result 221400 states and 296981 transitions. [2021-11-23 01:56:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:56:35,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2021-11-23 01:56:35,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:56:36,220 INFO L225 Difference]: With dead ends: 221400 [2021-11-23 01:56:36,220 INFO L226 Difference]: Without dead ends: 142830 [2021-11-23 01:56:36,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:56:36,335 INFO L933 BasicCegarLoop]: 14109 mSDtfsCounter, 17510 mSDsluCounter, 19669 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17533 SdHoareTripleChecker+Valid, 33778 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:56:36,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17533 Valid, 33778 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:56:36,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142830 states. [2021-11-23 01:56:38,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142830 to 105570. [2021-11-23 01:56:38,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105570 states, 104656 states have (on average 1.3423310655863019) internal successors, (140483), 105289 states have internal predecessors, (140483), 730 states have call successors, (730), 100 states have call predecessors, (730), 100 states have return successors, (730), 690 states have call predecessors, (730), 730 states have call successors, (730) [2021-11-23 01:56:39,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105570 states to 105570 states and 141943 transitions. [2021-11-23 01:56:39,031 INFO L78 Accepts]: Start accepts. Automaton has 105570 states and 141943 transitions. Word has length 96 [2021-11-23 01:56:39,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:56:39,032 INFO L470 AbstractCegarLoop]: Abstraction has 105570 states and 141943 transitions. [2021-11-23 01:56:39,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-23 01:56:39,033 INFO L276 IsEmpty]: Start isEmpty. Operand 105570 states and 141943 transitions. [2021-11-23 01:56:39,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 01:56:39,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:56:39,047 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:56:39,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 01:56:39,047 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-23 01:56:39,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:56:39,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1227292905, now seen corresponding path program 1 times [2021-11-23 01:56:39,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:56:39,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943432636] [2021-11-23 01:56:39,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:56:39,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:56:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:56:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 01:56:39,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:56:39,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943432636] [2021-11-23 01:56:39,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943432636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:56:39,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:56:39,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:56:39,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141664966] [2021-11-23 01:56:39,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:56:39,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:56:39,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:56:39,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:56:39,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:56:39,311 INFO L87 Difference]: Start difference. First operand 105570 states and 141943 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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) [2021-11-23 01:56:41,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:56:41,469 INFO L93 Difference]: Finished difference Result 105570 states and 141943 transitions. [2021-11-23 01:56:41,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:56:41,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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 97 [2021-11-23 01:56:41,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:56:41,697 INFO L225 Difference]: With dead ends: 105570 [2021-11-23 01:56:41,698 INFO L226 Difference]: Without dead ends: 105568 [2021-11-23 01:56:41,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:56:41,742 INFO L933 BasicCegarLoop]: 9830 mSDtfsCounter, 1215 mSDsluCounter, 8213 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 18043 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 01:56:41,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1215 Valid, 18043 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 01:56:41,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105568 states. [2021-11-23 01:56:43,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105568 to 105568. [2021-11-23 01:56:44,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105568 states, 104655 states have (on average 1.342238784577899) internal successors, (140472), 105287 states have internal predecessors, (140472), 730 states have call successors, (730), 100 states have call predecessors, (730), 100 states have return successors, (730), 690 states have call predecessors, (730), 730 states have call successors, (730) [2021-11-23 01:56:44,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105568 states to 105568 states and 141932 transitions. [2021-11-23 01:56:44,348 INFO L78 Accepts]: Start accepts. Automaton has 105568 states and 141932 transitions. Word has length 97 [2021-11-23 01:56:44,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:56:44,349 INFO L470 AbstractCegarLoop]: Abstraction has 105568 states and 141932 transitions. [2021-11-23 01:56:44,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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) [2021-11-23 01:56:44,350 INFO L276 IsEmpty]: Start isEmpty. Operand 105568 states and 141932 transitions. [2021-11-23 01:56:44,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 01:56:44,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:56:44,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:56:44,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 01:56:44,365 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-23 01:56:44,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:56:44,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1640147776, now seen corresponding path program 1 times [2021-11-23 01:56:44,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:56:44,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410568946] [2021-11-23 01:56:44,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:56:44,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:56:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:56:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:56:44,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:56:44,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410568946] [2021-11-23 01:56:44,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410568946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:56:44,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:56:44,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:56:44,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985015307] [2021-11-23 01:56:44,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:56:44,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:56:44,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:56:44,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:56:44,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:56:44,574 INFO L87 Difference]: Start difference. First operand 105568 states and 141932 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 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)