./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 97cecdf2f398250e9c44f19d8d35ed7fcac528daa12758af85552fae0658b596 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:06:22,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:06:22,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:06:22,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:06:22,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:06:22,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:06:22,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:06:22,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:06:22,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:06:22,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:06:22,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:06:22,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:06:22,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:06:22,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:06:22,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:06:22,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:06:22,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:06:22,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:06:22,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:06:22,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:06:22,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:06:22,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:06:22,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:06:22,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:06:22,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:06:22,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:06:22,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:06:22,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:06:22,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:06:22,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:06:22,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:06:22,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:06:22,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:06:22,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:06:22,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:06:22,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:06:22,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:06:22,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:06:22,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:06:22,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:06:22,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:06:22,559 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:06:22,573 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:06:22,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:06:22,574 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:06:22,574 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:06:22,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:06:22,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:06:22,575 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:06:22,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:06:22,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:06:22,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:06:22,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:06:22,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:06:22,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:06:22,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:06:22,576 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:06:22,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:06:22,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:06:22,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:06:22,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:06:22,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:06:22,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:06:22,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:06:22,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:06:22,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:06:22,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:06:22,578 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:06:22,578 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:06:22,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:06:22,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:06:22,578 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97cecdf2f398250e9c44f19d8d35ed7fcac528daa12758af85552fae0658b596 [2021-11-06 19:06:22,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:06:22,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:06:22,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:06:22,824 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:06:22,826 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:06:22,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i [2021-11-06 19:06:22,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dafb529e/5a247224342d443fb51c1146927d44d4/FLAG5fe9f3f6e [2021-11-06 19:06:23,639 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:06:23,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i [2021-11-06 19:06:23,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dafb529e/5a247224342d443fb51c1146927d44d4/FLAG5fe9f3f6e [2021-11-06 19:06:24,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dafb529e/5a247224342d443fb51c1146927d44d4 [2021-11-06 19:06:24,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:06:24,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:06:24,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:06:24,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:06:24,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:06:24,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:06:24" (1/1) ... [2021-11-06 19:06:24,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fff5b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:24, skipping insertion in model container [2021-11-06 19:06:24,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:06:24" (1/1) ... [2021-11-06 19:06:24,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:06:24,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:06:27,608 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i[428896,428909] [2021-11-06 19:06:27,611 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i[429065,429078] [2021-11-06 19:06:27,611 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i[429232,429245] [2021-11-06 19:06:27,612 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i[429400,429413] [2021-11-06 19:06:27,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:06:27,741 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:06:28,363 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i[428896,428909] [2021-11-06 19:06:28,364 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i[429065,429078] [2021-11-06 19:06:28,365 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i[429232,429245] [2021-11-06 19:06:28,365 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i[429400,429413] [2021-11-06 19:06:28,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:06:28,576 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:06:28,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28 WrapperNode [2021-11-06 19:06:28,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:06:28,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:06:28,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:06:28,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:06:28,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:28,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:29,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:06:29,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:06:29,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:06:29,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:06:29,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:29,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:29,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:29,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:29,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:29,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:29,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:29,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:06:29,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:06:29,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:06:29,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:06:29,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:29,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:06:29,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:06:29,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 19:06:29,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 19:06:29,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:06:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 19:06:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 19:06:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:06:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:06:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:06:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 19:06:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:06:29,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:06:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 19:06:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 19:06:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-06 19:06:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:06:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:06:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:06:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:06:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:06:39,633 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-06 19:06:39,634 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:06:39,634 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 19:06:39,634 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:06:39,635 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 19:06:39,635 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:06:39,664 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:06:39,664 INFO L299 CfgBuilder]: Removed 4574 assume(true) statements. [2021-11-06 19:06:39,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:06:39 BoogieIcfgContainer [2021-11-06 19:06:39,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:06:39,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:06:39,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:06:39,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:06:39,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:06:24" (1/3) ... [2021-11-06 19:06:39,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409f48d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:06:39, skipping insertion in model container [2021-11-06 19:06:39,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (2/3) ... [2021-11-06 19:06:39,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409f48d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:06:39, skipping insertion in model container [2021-11-06 19:06:39,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:06:39" (3/3) ... [2021-11-06 19:06:39,676 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i [2021-11-06 19:06:39,680 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:06:39,680 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2021-11-06 19:06:39,728 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:06:39,731 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 19:06:39,731 INFO L340 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2021-11-06 19:06:39,783 INFO L276 IsEmpty]: Start isEmpty. Operand has 5290 states, 5229 states have (on average 1.4756167527251864) internal successors, (7716), 5289 states have internal predecessors, (7716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:39,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 19:06:39,793 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:39,793 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:39,794 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:06:39,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:39,797 INFO L85 PathProgramCache]: Analyzing trace with hash -605749184, now seen corresponding path program 1 times [2021-11-06 19:06:39,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:39,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502594901] [2021-11-06 19:06:39,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:39,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:06:40,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:40,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502594901] [2021-11-06 19:06:40,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502594901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:40,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:40,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:40,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531446892] [2021-11-06 19:06:40,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:06:40,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:40,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:06:40,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:40,323 INFO L87 Difference]: Start difference. First operand has 5290 states, 5229 states have (on average 1.4756167527251864) internal successors, (7716), 5289 states have internal predecessors, (7716), 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 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:42,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:42,868 INFO L93 Difference]: Finished difference Result 13639 states and 19678 transitions. [2021-11-06 19:06:42,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:06:42,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2021-11-06 19:06:42,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:42,913 INFO L225 Difference]: With dead ends: 13639 [2021-11-06 19:06:42,913 INFO L226 Difference]: Without dead ends: 8301 [2021-11-06 19:06:42,929 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:42,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8301 states. [2021-11-06 19:06:43,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8301 to 8269. [2021-11-06 19:06:43,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8269 states, 8208 states have (on average 1.3310185185185186) internal successors, (10925), 8268 states have internal predecessors, (10925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:43,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8269 states to 8269 states and 10925 transitions. [2021-11-06 19:06:43,155 INFO L78 Accepts]: Start accepts. Automaton has 8269 states and 10925 transitions. Word has length 101 [2021-11-06 19:06:43,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:43,156 INFO L470 AbstractCegarLoop]: Abstraction has 8269 states and 10925 transitions. [2021-11-06 19:06:43,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:43,156 INFO L276 IsEmpty]: Start isEmpty. Operand 8269 states and 10925 transitions. [2021-11-06 19:06:43,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 19:06:43,161 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:43,161 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:43,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:06:43,162 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:06:43,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:43,164 INFO L85 PathProgramCache]: Analyzing trace with hash -568039115, now seen corresponding path program 1 times [2021-11-06 19:06:43,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:43,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569007050] [2021-11-06 19:06:43,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:43,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:06:43,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:43,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569007050] [2021-11-06 19:06:43,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569007050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:43,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:43,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:43,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19337209] [2021-11-06 19:06:43,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:06:43,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:43,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:06:43,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:43,480 INFO L87 Difference]: Start difference. First operand 8269 states and 10925 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:45,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:45,929 INFO L93 Difference]: Finished difference Result 23889 states and 31643 transitions. [2021-11-06 19:06:45,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:06:45,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2021-11-06 19:06:45,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:45,985 INFO L225 Difference]: With dead ends: 23889 [2021-11-06 19:06:45,985 INFO L226 Difference]: Without dead ends: 15840 [2021-11-06 19:06:46,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:46,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15840 states. [2021-11-06 19:06:46,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15840 to 15394. [2021-11-06 19:06:46,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15394 states, 15333 states have (on average 1.3360725233157242) internal successors, (20486), 15393 states have internal predecessors, (20486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:46,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15394 states to 15394 states and 20486 transitions. [2021-11-06 19:06:46,389 INFO L78 Accepts]: Start accepts. Automaton has 15394 states and 20486 transitions. Word has length 101 [2021-11-06 19:06:46,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:46,390 INFO L470 AbstractCegarLoop]: Abstraction has 15394 states and 20486 transitions. [2021-11-06 19:06:46,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:46,390 INFO L276 IsEmpty]: Start isEmpty. Operand 15394 states and 20486 transitions. [2021-11-06 19:06:46,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-06 19:06:46,392 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:46,392 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:46,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:06:46,393 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:06:46,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:46,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1713874760, now seen corresponding path program 1 times [2021-11-06 19:06:46,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:46,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171936749] [2021-11-06 19:06:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:46,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:46,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:06:46,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:46,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171936749] [2021-11-06 19:06:46,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171936749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:46,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:46,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:46,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556790447] [2021-11-06 19:06:46,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:06:46,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:46,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:06:46,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:46,574 INFO L87 Difference]: Start difference. First operand 15394 states and 20486 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:49,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:49,106 INFO L93 Difference]: Finished difference Result 27011 states and 35963 transitions. [2021-11-06 19:06:49,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:06:49,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 113 [2021-11-06 19:06:49,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:49,149 INFO L225 Difference]: With dead ends: 27011 [2021-11-06 19:06:49,149 INFO L226 Difference]: Without dead ends: 11837 [2021-11-06 19:06:49,172 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:49,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11837 states. [2021-11-06 19:06:49,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11837 to 11747. [2021-11-06 19:06:49,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11747 states, 11686 states have (on average 1.3348451138113984) internal successors, (15599), 11746 states have internal predecessors, (15599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:49,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11747 states to 11747 states and 15599 transitions. [2021-11-06 19:06:49,443 INFO L78 Accepts]: Start accepts. Automaton has 11747 states and 15599 transitions. Word has length 113 [2021-11-06 19:06:49,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:49,443 INFO L470 AbstractCegarLoop]: Abstraction has 11747 states and 15599 transitions. [2021-11-06 19:06:49,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:49,444 INFO L276 IsEmpty]: Start isEmpty. Operand 11747 states and 15599 transitions. [2021-11-06 19:06:49,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-06 19:06:49,447 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:49,447 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:49,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:06:49,448 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:06:49,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:49,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1146638227, now seen corresponding path program 1 times [2021-11-06 19:06:49,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:49,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669249821] [2021-11-06 19:06:49,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:49,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:06:49,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:49,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669249821] [2021-11-06 19:06:49,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669249821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:49,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:49,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:49,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141209504] [2021-11-06 19:06:49,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:06:49,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:49,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:06:49,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:49,606 INFO L87 Difference]: Start difference. First operand 11747 states and 15599 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:52,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:52,042 INFO L93 Difference]: Finished difference Result 30717 states and 40934 transitions. [2021-11-06 19:06:52,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:06:52,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 128 [2021-11-06 19:06:52,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:52,089 INFO L225 Difference]: With dead ends: 30717 [2021-11-06 19:06:52,089 INFO L226 Difference]: Without dead ends: 21028 [2021-11-06 19:06:52,112 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:52,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21028 states. [2021-11-06 19:06:52,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21028 to 20996. [2021-11-06 19:06:52,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20996 states, 20935 states have (on average 1.3377597325053738) internal successors, (28006), 20995 states have internal predecessors, (28006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:52,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20996 states to 20996 states and 28006 transitions. [2021-11-06 19:06:52,829 INFO L78 Accepts]: Start accepts. Automaton has 20996 states and 28006 transitions. Word has length 128 [2021-11-06 19:06:52,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:52,830 INFO L470 AbstractCegarLoop]: Abstraction has 20996 states and 28006 transitions. [2021-11-06 19:06:52,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:52,830 INFO L276 IsEmpty]: Start isEmpty. Operand 20996 states and 28006 transitions. [2021-11-06 19:06:52,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-06 19:06:52,833 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:52,833 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:52,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:06:52,833 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:06:52,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:52,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1559981167, now seen corresponding path program 1 times [2021-11-06 19:06:52,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:52,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843754064] [2021-11-06 19:06:52,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:52,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:53,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:06:53,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:53,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843754064] [2021-11-06 19:06:53,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843754064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:53,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:53,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:53,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500007331] [2021-11-06 19:06:53,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:06:53,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:53,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:06:53,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:53,007 INFO L87 Difference]: Start difference. First operand 20996 states and 28006 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:55,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:55,511 INFO L93 Difference]: Finished difference Result 49219 states and 65756 transitions. [2021-11-06 19:06:55,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:06:55,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 128 [2021-11-06 19:06:55,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:55,586 INFO L225 Difference]: With dead ends: 49219 [2021-11-06 19:06:55,587 INFO L226 Difference]: Without dead ends: 30281 [2021-11-06 19:06:55,628 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:55,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30281 states. [2021-11-06 19:06:56,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30281 to 30222. [2021-11-06 19:06:56,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30222 states, 30161 states have (on average 1.3391465800205564) internal successors, (40390), 30221 states have internal predecessors, (40390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:56,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30222 states to 30222 states and 40390 transitions. [2021-11-06 19:06:56,369 INFO L78 Accepts]: Start accepts. Automaton has 30222 states and 40390 transitions. Word has length 128 [2021-11-06 19:06:56,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:56,370 INFO L470 AbstractCegarLoop]: Abstraction has 30222 states and 40390 transitions. [2021-11-06 19:06:56,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:56,370 INFO L276 IsEmpty]: Start isEmpty. Operand 30222 states and 40390 transitions. [2021-11-06 19:06:56,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-06 19:06:56,372 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:56,373 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:56,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:06:56,373 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:06:56,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:56,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1174600692, now seen corresponding path program 1 times [2021-11-06 19:06:56,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:56,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882798864] [2021-11-06 19:06:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:56,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:56,631 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:06:56,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:56,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882798864] [2021-11-06 19:06:56,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882798864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:56,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:56,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:56,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618390646] [2021-11-06 19:06:56,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:06:56,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:56,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:06:56,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:06:56,633 INFO L87 Difference]: Start difference. First operand 30222 states and 40390 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:57,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:57,206 INFO L93 Difference]: Finished difference Result 30222 states and 40390 transitions. [2021-11-06 19:06:57,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:06:57,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-06 19:06:57,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:57,271 INFO L225 Difference]: With dead ends: 30222 [2021-11-06 19:06:57,271 INFO L226 Difference]: Without dead ends: 30216 [2021-11-06 19:06:57,285 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:06:57,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30216 states. [2021-11-06 19:06:57,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30216 to 30216. [2021-11-06 19:06:57,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30216 states, 30158 states have (on average 1.3390808409045694) internal successors, (40384), 30215 states have internal predecessors, (40384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:57,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30216 states to 30216 states and 40384 transitions. [2021-11-06 19:06:57,996 INFO L78 Accepts]: Start accepts. Automaton has 30216 states and 40384 transitions. Word has length 129 [2021-11-06 19:06:57,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:57,996 INFO L470 AbstractCegarLoop]: Abstraction has 30216 states and 40384 transitions. [2021-11-06 19:06:57,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:57,997 INFO L276 IsEmpty]: Start isEmpty. Operand 30216 states and 40384 transitions. [2021-11-06 19:06:57,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-06 19:06:57,999 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:58,000 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:58,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 19:06:58,001 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:06:58,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:58,002 INFO L85 PathProgramCache]: Analyzing trace with hash -784967625, now seen corresponding path program 1 times [2021-11-06 19:06:58,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:58,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204295848] [2021-11-06 19:06:58,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:58,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:58,329 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:06:58,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:58,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204295848] [2021-11-06 19:06:58,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204295848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:58,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:58,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:58,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880602584] [2021-11-06 19:06:58,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:06:58,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:58,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:06:58,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:06:58,332 INFO L87 Difference]: Start difference. First operand 30216 states and 40384 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:59,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:59,009 INFO L93 Difference]: Finished difference Result 30216 states and 40384 transitions. [2021-11-06 19:06:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:06:59,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 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 131 [2021-11-06 19:06:59,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:59,063 INFO L225 Difference]: With dead ends: 30216 [2021-11-06 19:06:59,064 INFO L226 Difference]: Without dead ends: 30210 [2021-11-06 19:06:59,075 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:06:59,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30210 states. [2021-11-06 19:06:59,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30210 to 30210. [2021-11-06 19:06:59,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30210 states, 30155 states have (on average 1.3390150887083403) internal successors, (40378), 30209 states have internal predecessors, (40378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:59,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30210 states to 30210 states and 40378 transitions. [2021-11-06 19:06:59,758 INFO L78 Accepts]: Start accepts. Automaton has 30210 states and 40378 transitions. Word has length 131 [2021-11-06 19:06:59,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:59,758 INFO L470 AbstractCegarLoop]: Abstraction has 30210 states and 40378 transitions. [2021-11-06 19:06:59,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:59,758 INFO L276 IsEmpty]: Start isEmpty. Operand 30210 states and 40378 transitions. [2021-11-06 19:06:59,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 19:06:59,769 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:59,769 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:59,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 19:06:59,770 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:06:59,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:59,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1560523002, now seen corresponding path program 1 times [2021-11-06 19:06:59,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:59,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243493337] [2021-11-06 19:06:59,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:59,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:00,132 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:07:00,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:00,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243493337] [2021-11-06 19:07:00,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243493337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:00,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:00,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:00,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401029266] [2021-11-06 19:07:00,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:00,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:00,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:00,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:00,137 INFO L87 Difference]: Start difference. First operand 30210 states and 40378 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:00,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:00,826 INFO L93 Difference]: Finished difference Result 30210 states and 40378 transitions. [2021-11-06 19:07:00,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:00,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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 133 [2021-11-06 19:07:00,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:00,880 INFO L225 Difference]: With dead ends: 30210 [2021-11-06 19:07:00,880 INFO L226 Difference]: Without dead ends: 30204 [2021-11-06 19:07:00,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:00,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30204 states. [2021-11-06 19:07:01,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30204 to 30204. [2021-11-06 19:07:01,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30204 states, 30152 states have (on average 1.338949323427965) internal successors, (40372), 30203 states have internal predecessors, (40372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30204 states to 30204 states and 40372 transitions. [2021-11-06 19:07:01,541 INFO L78 Accepts]: Start accepts. Automaton has 30204 states and 40372 transitions. Word has length 133 [2021-11-06 19:07:01,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:01,542 INFO L470 AbstractCegarLoop]: Abstraction has 30204 states and 40372 transitions. [2021-11-06 19:07:01,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:01,542 INFO L276 IsEmpty]: Start isEmpty. Operand 30204 states and 40372 transitions. [2021-11-06 19:07:01,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-06 19:07:01,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:01,546 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:01,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 19:07:01,546 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:07:01,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:01,547 INFO L85 PathProgramCache]: Analyzing trace with hash 719185469, now seen corresponding path program 1 times [2021-11-06 19:07:01,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:01,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932054284] [2021-11-06 19:07:01,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:01,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:01,848 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:07:01,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:01,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932054284] [2021-11-06 19:07:01,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932054284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:01,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:01,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:01,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783669247] [2021-11-06 19:07:01,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:01,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:01,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:01,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:01,851 INFO L87 Difference]: Start difference. First operand 30204 states and 40372 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:02,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:02,427 INFO L93 Difference]: Finished difference Result 30204 states and 40372 transitions. [2021-11-06 19:07:02,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:02,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-06 19:07:02,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:02,478 INFO L225 Difference]: With dead ends: 30204 [2021-11-06 19:07:02,479 INFO L226 Difference]: Without dead ends: 30198 [2021-11-06 19:07:02,490 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:02,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30198 states. [2021-11-06 19:07:03,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30198 to 30198. [2021-11-06 19:07:03,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30198 states, 30149 states have (on average 1.3388835450595375) internal successors, (40366), 30197 states have internal predecessors, (40366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:03,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30198 states to 30198 states and 40366 transitions. [2021-11-06 19:07:03,249 INFO L78 Accepts]: Start accepts. Automaton has 30198 states and 40366 transitions. Word has length 135 [2021-11-06 19:07:03,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:03,250 INFO L470 AbstractCegarLoop]: Abstraction has 30198 states and 40366 transitions. [2021-11-06 19:07:03,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:03,250 INFO L276 IsEmpty]: Start isEmpty. Operand 30198 states and 40366 transitions. [2021-11-06 19:07:03,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 19:07:03,254 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:03,255 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:03,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 19:07:03,255 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:07:03,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:03,255 INFO L85 PathProgramCache]: Analyzing trace with hash -352331776, now seen corresponding path program 1 times [2021-11-06 19:07:03,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:03,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899378495] [2021-11-06 19:07:03,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:03,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:03,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:07:03,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:03,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899378495] [2021-11-06 19:07:03,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899378495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:03,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:03,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:03,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091715522] [2021-11-06 19:07:03,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:03,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:03,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:03,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:03,470 INFO L87 Difference]: Start difference. First operand 30198 states and 40366 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:04,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:04,174 INFO L93 Difference]: Finished difference Result 30198 states and 40366 transitions. [2021-11-06 19:07:04,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:04,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-06 19:07:04,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:04,225 INFO L225 Difference]: With dead ends: 30198 [2021-11-06 19:07:04,225 INFO L226 Difference]: Without dead ends: 30192 [2021-11-06 19:07:04,238 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:04,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30192 states. [2021-11-06 19:07:04,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30192 to 30192. [2021-11-06 19:07:04,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30192 states, 30146 states have (on average 1.3388177535991508) internal successors, (40360), 30191 states have internal predecessors, (40360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:04,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30192 states to 30192 states and 40360 transitions. [2021-11-06 19:07:04,971 INFO L78 Accepts]: Start accepts. Automaton has 30192 states and 40360 transitions. Word has length 137 [2021-11-06 19:07:04,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:04,971 INFO L470 AbstractCegarLoop]: Abstraction has 30192 states and 40360 transitions. [2021-11-06 19:07:04,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:04,971 INFO L276 IsEmpty]: Start isEmpty. Operand 30192 states and 40360 transitions. [2021-11-06 19:07:04,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-06 19:07:04,976 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:04,976 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:04,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 19:07:04,976 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:07:04,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:04,977 INFO L85 PathProgramCache]: Analyzing trace with hash 711747139, now seen corresponding path program 1 times [2021-11-06 19:07:04,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:04,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838254852] [2021-11-06 19:07:04,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:04,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:07:05,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:05,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838254852] [2021-11-06 19:07:05,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838254852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:05,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:05,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:05,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355385887] [2021-11-06 19:07:05,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:05,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:05,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:05,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:05,150 INFO L87 Difference]: Start difference. First operand 30192 states and 40360 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:05,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:05,914 INFO L93 Difference]: Finished difference Result 30192 states and 40360 transitions. [2021-11-06 19:07:05,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:05,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 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 139 [2021-11-06 19:07:05,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:05,985 INFO L225 Difference]: With dead ends: 30192 [2021-11-06 19:07:05,985 INFO L226 Difference]: Without dead ends: 30186 [2021-11-06 19:07:06,004 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:06,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30186 states. [2021-11-06 19:07:06,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30186 to 30186. [2021-11-06 19:07:06,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30186 states, 30143 states have (on average 1.3387519490428956) internal successors, (40354), 30185 states have internal predecessors, (40354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:06,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30186 states to 30186 states and 40354 transitions. [2021-11-06 19:07:06,811 INFO L78 Accepts]: Start accepts. Automaton has 30186 states and 40354 transitions. Word has length 139 [2021-11-06 19:07:06,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:06,811 INFO L470 AbstractCegarLoop]: Abstraction has 30186 states and 40354 transitions. [2021-11-06 19:07:06,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:06,812 INFO L276 IsEmpty]: Start isEmpty. Operand 30186 states and 40354 transitions. [2021-11-06 19:07:06,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-06 19:07:06,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:06,838 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:06,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 19:07:06,840 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:07:06,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:06,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1089368326, now seen corresponding path program 1 times [2021-11-06 19:07:06,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:06,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535158581] [2021-11-06 19:07:06,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:06,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:07:06,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:06,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535158581] [2021-11-06 19:07:06,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535158581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:06,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:07,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:07,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872295116] [2021-11-06 19:07:07,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:07,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:07,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:07,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:07,002 INFO L87 Difference]: Start difference. First operand 30186 states and 40354 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:07,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:07,664 INFO L93 Difference]: Finished difference Result 30186 states and 40354 transitions. [2021-11-06 19:07:07,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:07,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 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 141 [2021-11-06 19:07:07,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:07,720 INFO L225 Difference]: With dead ends: 30186 [2021-11-06 19:07:07,720 INFO L226 Difference]: Without dead ends: 30180 [2021-11-06 19:07:07,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:07,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30180 states. [2021-11-06 19:07:08,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30180 to 30180. [2021-11-06 19:07:08,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30180 states, 30140 states have (on average 1.3386861313868612) internal successors, (40348), 30179 states have internal predecessors, (40348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:08,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30180 states to 30180 states and 40348 transitions. [2021-11-06 19:07:08,621 INFO L78 Accepts]: Start accepts. Automaton has 30180 states and 40348 transitions. Word has length 141 [2021-11-06 19:07:08,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:08,621 INFO L470 AbstractCegarLoop]: Abstraction has 30180 states and 40348 transitions. [2021-11-06 19:07:08,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:08,622 INFO L276 IsEmpty]: Start isEmpty. Operand 30180 states and 40348 transitions. [2021-11-06 19:07:08,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-06 19:07:08,626 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:08,627 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:08,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 19:07:08,627 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:07:08,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:08,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1088890807, now seen corresponding path program 1 times [2021-11-06 19:07:08,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:08,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688141244] [2021-11-06 19:07:08,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:08,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:07:08,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:08,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688141244] [2021-11-06 19:07:08,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688141244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:08,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:08,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:08,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465078143] [2021-11-06 19:07:08,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:08,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:08,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:08,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:08,799 INFO L87 Difference]: Start difference. First operand 30180 states and 40348 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:09,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:09,622 INFO L93 Difference]: Finished difference Result 30180 states and 40348 transitions. [2021-11-06 19:07:09,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:09,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-06 19:07:09,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:09,676 INFO L225 Difference]: With dead ends: 30180 [2021-11-06 19:07:09,677 INFO L226 Difference]: Without dead ends: 30174 [2021-11-06 19:07:09,789 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:09,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30174 states. [2021-11-06 19:07:10,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30174 to 30174. [2021-11-06 19:07:10,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30174 states, 30137 states have (on average 1.338620300627136) internal successors, (40342), 30173 states have internal predecessors, (40342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:10,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30174 states to 30174 states and 40342 transitions. [2021-11-06 19:07:10,518 INFO L78 Accepts]: Start accepts. Automaton has 30174 states and 40342 transitions. Word has length 143 [2021-11-06 19:07:10,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:10,519 INFO L470 AbstractCegarLoop]: Abstraction has 30174 states and 40342 transitions. [2021-11-06 19:07:10,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:10,519 INFO L276 IsEmpty]: Start isEmpty. Operand 30174 states and 40342 transitions. [2021-11-06 19:07:10,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-06 19:07:10,524 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:10,524 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:10,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 19:07:10,525 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:07:10,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:10,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1548123148, now seen corresponding path program 1 times [2021-11-06 19:07:10,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:10,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821533025] [2021-11-06 19:07:10,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:10,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:07:10,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:10,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821533025] [2021-11-06 19:07:10,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821533025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:10,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:10,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:10,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116039264] [2021-11-06 19:07:10,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:10,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:10,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:10,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:10,817 INFO L87 Difference]: Start difference. First operand 30174 states and 40342 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:11,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:11,516 INFO L93 Difference]: Finished difference Result 30174 states and 40342 transitions. [2021-11-06 19:07:11,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:11,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 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 145 [2021-11-06 19:07:11,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:11,571 INFO L225 Difference]: With dead ends: 30174 [2021-11-06 19:07:11,571 INFO L226 Difference]: Without dead ends: 30168 [2021-11-06 19:07:11,586 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:11,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30168 states. [2021-11-06 19:07:12,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30168 to 30168. [2021-11-06 19:07:12,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30168 states, 30134 states have (on average 1.3385544567598062) internal successors, (40336), 30167 states have internal predecessors, (40336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:12,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30168 states to 30168 states and 40336 transitions. [2021-11-06 19:07:12,714 INFO L78 Accepts]: Start accepts. Automaton has 30168 states and 40336 transitions. Word has length 145 [2021-11-06 19:07:12,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:12,715 INFO L470 AbstractCegarLoop]: Abstraction has 30168 states and 40336 transitions. [2021-11-06 19:07:12,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:12,715 INFO L276 IsEmpty]: Start isEmpty. Operand 30168 states and 40336 transitions. [2021-11-06 19:07:12,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-06 19:07:12,720 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:12,720 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:12,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 19:07:12,721 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:07:12,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:12,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1687829583, now seen corresponding path program 1 times [2021-11-06 19:07:12,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:12,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520945817] [2021-11-06 19:07:12,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:12,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:13,009 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:07:13,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:13,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520945817] [2021-11-06 19:07:13,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520945817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:13,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:13,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:13,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562509218] [2021-11-06 19:07:13,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:13,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:13,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:13,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:13,012 INFO L87 Difference]: Start difference. First operand 30168 states and 40336 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:13,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:13,628 INFO L93 Difference]: Finished difference Result 30168 states and 40336 transitions. [2021-11-06 19:07:13,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:13,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-11-06 19:07:13,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:13,680 INFO L225 Difference]: With dead ends: 30168 [2021-11-06 19:07:13,680 INFO L226 Difference]: Without dead ends: 30162 [2021-11-06 19:07:13,696 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:13,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30162 states. [2021-11-06 19:07:14,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30162 to 30162. [2021-11-06 19:07:14,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30162 states, 30131 states have (on average 1.3384885997809566) internal successors, (40330), 30161 states have internal predecessors, (40330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:14,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30162 states to 30162 states and 40330 transitions. [2021-11-06 19:07:14,594 INFO L78 Accepts]: Start accepts. Automaton has 30162 states and 40330 transitions. Word has length 147 [2021-11-06 19:07:14,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:14,594 INFO L470 AbstractCegarLoop]: Abstraction has 30162 states and 40330 transitions. [2021-11-06 19:07:14,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:14,595 INFO L276 IsEmpty]: Start isEmpty. Operand 30162 states and 40330 transitions. [2021-11-06 19:07:14,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-06 19:07:14,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:14,600 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:14,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 19:07:14,600 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:07:14,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:14,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1493239534, now seen corresponding path program 1 times [2021-11-06 19:07:14,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:14,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456480016] [2021-11-06 19:07:14,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:14,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:14,750 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:07:14,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:14,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456480016] [2021-11-06 19:07:14,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456480016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:14,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:14,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:14,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199114684] [2021-11-06 19:07:14,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:14,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:14,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:14,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:14,753 INFO L87 Difference]: Start difference. First operand 30162 states and 40330 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:15,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:15,562 INFO L93 Difference]: Finished difference Result 30162 states and 40330 transitions. [2021-11-06 19:07:15,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:15,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 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 149 [2021-11-06 19:07:15,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:15,613 INFO L225 Difference]: With dead ends: 30162 [2021-11-06 19:07:15,614 INFO L226 Difference]: Without dead ends: 30156 [2021-11-06 19:07:15,628 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30156 states. [2021-11-06 19:07:16,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30156 to 30156. [2021-11-06 19:07:16,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30156 states, 30128 states have (on average 1.3384227296866702) internal successors, (40324), 30155 states have internal predecessors, (40324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:16,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30156 states to 30156 states and 40324 transitions. [2021-11-06 19:07:16,527 INFO L78 Accepts]: Start accepts. Automaton has 30156 states and 40324 transitions. Word has length 149 [2021-11-06 19:07:16,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:16,527 INFO L470 AbstractCegarLoop]: Abstraction has 30156 states and 40324 transitions. [2021-11-06 19:07:16,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:16,528 INFO L276 IsEmpty]: Start isEmpty. Operand 30156 states and 40324 transitions. [2021-11-06 19:07:16,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-06 19:07:16,533 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:16,533 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:16,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 19:07:16,534 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:07:16,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:16,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1052033605, now seen corresponding path program 1 times [2021-11-06 19:07:16,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:16,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424605869] [2021-11-06 19:07:16,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:16,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:07:16,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:16,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424605869] [2021-11-06 19:07:16,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424605869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:16,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:16,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:16,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914368869] [2021-11-06 19:07:16,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:07:16,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:16,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:07:16,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:16,740 INFO L87 Difference]: Start difference. First operand 30156 states and 40324 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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)